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Acetylacetone

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65: 55: 95: 85: 1815: 453: 302: 1553: 921: 682: 677: 667: 1188: 672: 42: 917: 1403: 920: 1002: 922: 1074:. The mixture is a colorless liquid. These tautomers interconvert so rapidly under most conditions that they are treated as a single compound in most applications. Acetylacetone is a building block for the synthesis of many 690: 647: 938: 2027:
Smith, Kyle T.; Young, Sherri C.; DeBlasio, James W.; Hamann, Christian S. (12 April 2016). "Measuring Structural and Electronic Effects on Keto–Enol Equilibrium in 1,3-Dicarbonyl Compounds".
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Manbeck, Kimberly A.; Boaz, Nicholas C.; Bair, Nathaniel C.; Sanders, Allix M. S.; Marsh, Anderson L. (2011). "Substituent Effects on Keto–Enol Equilibria Using NMR Spectroscopy".
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is equal or greater than 1, the enol form is favoured. The keto form becomes more favourable in polar, hydrogen-bonding solvents, such as water. The enol form is a
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Yoshida, Z.; Ogoshi, H.; Tokumitsu, T. (1970). "Intramolecular hydrogen bond in enol form of 3-substituted-2,4-pentanedione".
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Acetylacetone is a versatile bifunctional precursor to heterocycles because both keto groups may undergo
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Because of the ease of these syntheses, many analogues of acetylacetonates are known. Some examples are
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A comprehensive database of published data on equilibrium constants of metal complexes and ligands
1208:, meaning the hydrogen atom is shared equally between the two oxygen atoms. In the gas phase, the 772: 3111: 2233: 2206: 1836:. A general method of synthesis is to treat a metal salt with acetylacetone in the presence of a 1485: 1205: 888: 792: 742: 219: 788: 804: 2379: 2291: 2266: 2166: 2077: 2007: 1650: 1579: 816: 2211:"Critical evaluation of equilibrium constants involving acetylacetone and its metal chelates" 3121: 2369: 2361: 2300: 2258: 2225: 2143: 2114: 2069: 2036: 1999: 1837: 1737: 1563: 1513: 1220: 1038: 880: 618: 538: 1870:
Both oxygen atoms bind to the metal to form a six-membered chelate ring. In some cases the
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values for this equilibrium in aqueous solution at 25 °C are 8.99 ± 0.04 (
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bonds are equivalent. Both C-C central bonds are equivalent as well, with one
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Straganz, G.D.; Glieder, A.; Brecker, L.; Ribbons, D.W.; Steiner, W. (2003).
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Denoon, C. E. Jr.; Adkins, Homer; Rainey, James L. (1940). "Acetylacetone".
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as well. Acetylacetone degradation has been characterized in the bacterium
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cleaves the carbon-carbon bond of acetylacetone, producing acetate and
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Acetylacetone is prepared industrially by the thermal rearrangement of
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A second synthesis involves the base-catalyzed condensation (e.g., by
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The equilibrium constant tends to be high in nonpolar solvents; when
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Except where otherwise noted, data are given for materials in their
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acetylacetone twice. The resulting dilithium species can then be
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is so strong that no added base is needed to form the complex.
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of acetylacetone coexist in solution. The enol form has C
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Siegel, Hardo; Eggersdorfer, Manfred (2002). "Ketones".
1512:). Values for mixed solvents are available. Very strong 1010: 1996:
e-EROS Encyclopedia of Reagents for Organic Synthesis
1796:. Condensation with two aryl- or alkylamines gives 1558:Laboratory routes to acetylacetone also begin with 1430:). Those two equivalencies are because there is a 2163:Solvents and Solvent Effects in Organic Chemistry 372: 919: 164: 2254:Ullmann's Encyclopedia of Industrial Chemistry 1894:-dependent, but it has been proven to bind to 2421: 1994:Thomas M. Harris (2001). "2,4-Pentanedione". 8: 1426:atom bonded to the central carbon atom (the 1406:The structure of the acetylacetonate anion ( 27:"Acac" redirects here. For other uses, see 2428: 2414: 2406: 2054:Caminati, W.; Grabow, J.-U. (2006). "The C 451: 300: 278: 33: 2373: 2284: 2282: 476:InChI=1S/C5H8O2/c1-4(6)3-5(2)7/h3H2,1-2H3 408: 68:Ball-and-stick model of the keto tautomer 58:Ball-and-stick model of the enol tautomer 2061:Journal of the American Chemical Society 1954: 1950: 1946: 1939: 1935: 1931: 1924: 1918: 1914: 1910: 1856: 1846: 1724: 1720: 1716: 1712: 1708: 1699: 1695: 1691: 1687: 1683: 1679: 1675: 1671: 1667: 1663: 1659: 1636: 1632: 1619: 1615: 1611: 1607: 1603: 1599: 1595: 1585: 1573: 1569: 1500: 1488: 1438:in the acetylacetonate anion, where the 1385: 1381: 1377: 1373: 1369: 1344: 1340: 1252: 1154: 1094: 1070: 1066: 1052: 1048: 1044: 486:InChI=1/C5H8O2/c1-4(6)3-5(2)7/h3H2,1-2H3 98:Space-filling model of the keto tautomer 88:Space-filling model of the enol tautomer 2401:International Chemical Safety Card 0533 1968: 1442:of those four bonds is about 1.5. Both 507: 472: 447: 2457: 976:340 °C (644 °F; 613 K) 612:140 °C (284 °F; 413 K) 291: 2920: 1832:, Na(acac), is the precursor to many 602:−23 °C (−9 °F; 250 K) 479:Key: YRKCREAYFQTBPV-UHFFFAOYSA-N 258: 238: 7: 2447: 2058:Structure of Enolic Acetylacetone". 1749:2,2,6,6-tetramethyl-3,5-heptanedione 962:34 °C (93 °F; 307 K) 1759:are also used to generate volatile 1645:, followed by acidification of the 1477: = 0), 8.83 ± 0.02 ( 1414:In the acetylacetonate anion, both 489:Key: YRKCREAYFQTBPV-UHFFFAOYAO 363: 347: 1060:. It exists in equilibrium with a 25: 1780:. For example, condensation with 1450:. The acetylacetonate anion is a 1551: 1000: 680: 675: 670: 665: 550: 40: 1334:. It forms the acetylacetonate 996:(at 25 °C , 100 kPa). 1434:between the four bonds in the 556: 544: 118:(3Z)-4-Hydroxy-3-penten-2-one 1: 2161:Reichardt, Christian (2003). 2098:Journal of Chemical Education 2029:Journal of Chemical Education 1493:) and 9.00 ± 0.03 ( 2333:. Gustavus Adolphus College. 2148:10.1016/0040-4020(70)80005-9 1056:. It is classified as a 1,3- 2165:(3rd ed.). Wiley-VCH. 2041:10.1021/acs.jchemed.5b00170 79: 49: 3148: 2922: 2218:Pure and Applied Chemistry 1807: 1041:with the chemical formula 26: 2459: 2444: 1884:acetylacetone dioxygenase 1834:acetylacetonate complexes 1757:hexafluoroacetylacetonate 990: 646: 641: 531: 498: 463: 148: 131: 113: 108: 78: 48: 39: 2305:10.15227/orgsyn.020.0006 2263:10.1002/14356007.a15_077 2004:10.1002/047084289X.rp030 1788:while condensation with 1446:atoms equally share the 751:Precautionary statements 2348:Acinetobacter johnsonii 2257:. Weinheim: Wiley-VCH. 2230:10.1351/pac198254122557 1901:Acinetobacter johnsonii 1578:) upon the addition of 631:Magnetic susceptibility 1977:"05581: Acetylacetone" 1830:Sodium acetylacetonate 1826: 1810:Metal acetylacetonates 1804:Coordination chemistry 1753:Trifluoroacetylacetone 1647:sodium acetylacetonate 1411: 1357:(commonly abbreviated 1191: 1080:heterocyclic compounds 1076:coordination complexes 926: 99: 89: 69: 59: 2437:Metal acetylacetonate 1817: 1405: 1190: 925: 97: 87: 67: 57: 29:ACAC (disambiguation) 1820:ball-and-stick model 1436:O-C2-C3-C4-O linkage 1249:Acid–base properties 1210:equilibrium constant 908:(fire diamond) 523:: CC(O)=CC(=O)C 2354:Biochemical Journal 2111:2011JChEd..88.1444M 1546:isopropenyl acetate 1497: = 1.0 M 1330:Acetylacetone is a 1227:and other methods. 1069:−C(=O)−CH=C(−OH)−CH 619:Solubility in water 574: g·mol 220:Beilstein Reference 36: 3127:3-Hydroxypropenals 2366:10.1042/BJ20021047 2191:2017-06-19 at the 1827: 1412: 1192: 1023:Infobox references 927: 123:Pentane-2,4-dione 100: 90: 70: 60: 34: 3099: 3098: 3093: 3092: 2292:Organic Syntheses 2224:(12): 2557–2592. 2186:IUPAC SC-Database 2142:(24): 5691–5697. 2119:10.1021/ed1010932 2105:(10): 1444–1445. 2074:10.1021/ja055333g 1855:Hacac ⇌ M(acac) 1651:hydrogen chloride 1641:) of acetone and 1580:boron trifluoride 1481: = 0.1  1328: 1327: 1185: 1184: 1031:Chemical compound 1029: 1028: 705:Hazard statements 637:−54.88·10 cm/mol 582:Colorless liquid 432:CompTox Dashboard 208:Interactive image 197:Interactive image 190:Interactive image 104: 103: 74: 73: 18:Pentane-2,4-dione 16:(Redirected from 3139: 3117:Chelating agents 2448: 2430: 2423: 2416: 2407: 2388: 2387: 2377: 2341: 2335: 2334: 2332: 2318:O'Brien, Brian. 2315: 2309: 2307: 2286: 2277: 2276: 2248: 2242: 2241: 2215: 2207:Liljenzin, J. O. 2202: 2196: 2183: 2177: 2176: 2158: 2152: 2151: 2129: 2123: 2122: 2092: 2086: 2085: 2051: 2045: 2044: 2024: 2018: 2017: 1991: 1985: 1984: 1973: 1958: 1890:. The enzyme is 1866: 1738:dibenzoylmethane 1728: 1703: 1640: 1622: 1588: 1577: 1564:acetic anhydride 1555: 1520:compounds, will 1503: 1491: 1409: 1398: 1396: 1395: 1392: 1361: 1356: 1355: 1354: 1351: 1253: 1221:NMR spectroscopy 1157: 1095: 1073: 1055: 1039:organic compound 1013: 1007: 1004: 1003: 982:Explosive limits 947: 940: 933: 918: 898: 894: 890: 886: 882: 878: 874: 870: 866: 862: 858: 854: 850: 846: 842: 838: 834: 830: 826: 822: 818: 814: 810: 806: 802: 798: 794: 790: 786: 782: 778: 774: 770: 766: 762: 758: 744: 740: 736: 732: 728: 724: 720: 716: 712: 684: 679: 674: 669: 573: 558: 552: 546: 539:Chemical formula 456: 455: 440: 438: 412: 376: 365: 351: 329:Gmelin Reference 312: 304: 293: 282: 262: 242: 210: 199: 192: 168: 140:2,4-Pentanedione 80: 50: 44: 37: 21: 3147: 3146: 3142: 3141: 3140: 3138: 3137: 3136: 3102: 3101: 3100: 3095: 3094: 3041: 3033: 3025: 3017: 3009: 3001: 2993: 2985: 2980: 2978: 2970: 2959: 2951: 2943: 2935: 2830: 2822: 2802: 2794: 2783: 2755: 2741: 2733: 2728: 2726: 2718: 2707: 2703: 2692: 2684: 2651: 2643: 2635: 2627: 2620: 2615: 2613: 2605: 2600: 2598: 2587: 2582: 2580: 2572: 2567: 2565: 2557: 2552: 2550: 2546: 2538: 2505: 2440: 2434: 2397: 2392: 2391: 2343: 2342: 2338: 2330: 2327: 2323: 2317: 2316: 2312: 2288: 2287: 2280: 2273: 2250: 2249: 2245: 2213: 2204: 2203: 2199: 2193:Wayback Machine 2184: 2180: 2173: 2160: 2159: 2155: 2131: 2130: 2126: 2094: 2093: 2089: 2057: 2053: 2052: 2048: 2026: 2025: 2021: 2014: 1993: 1992: 1988: 1975: 1974: 1970: 1965: 1956: 1952: 1948: 1941: 1937: 1933: 1926: 1920: 1916: 1912: 1908: 1880: 1860: 1850: 1844: 1825: 1812: 1806: 1774: 1769: 1761:metal complexes 1726: 1722: 1718: 1714: 1710: 1706: 1701: 1697: 1693: 1689: 1685: 1681: 1677: 1673: 1669: 1665: 1661: 1657: 1638: 1634: 1630: 1628:sodium ethoxide 1621: 1617: 1613: 1609: 1605: 1601: 1597: 1593: 1587: 1583: 1575: 1571: 1567: 1542: 1502: 1498: 1490: 1486: 1471: 1448:negative charge 1407: 1393: 1390: 1389: 1387: 1383: 1379: 1375: 1371: 1367: 1359: 1352: 1349: 1348: 1346: 1342: 1338: 1268: 1251: 1243:carboxylic acid 1236: 1225:IR spectroscopy 1218: 1204: 1156: 1152: 1106: 1093: 1088: 1072: 1068: 1064: 1054: 1050: 1046: 1042: 1032: 1025: 1020: 1019: 1018:  ?) 1009: 1005: 1001: 997: 973: 970: 952: 951: 950: 949: 942: 935: 928: 924: 916: 753: 707: 693: 662: 634: 621: 571: 561: 555: 549: 541: 527: 524: 516: 511: 506: 505: 494: 491: 490: 487: 481: 480: 477: 471: 470: 459: 441: 434: 415: 395: 379: 366: 354: 331: 322: 285: 265: 245: 222: 213: 182: 171: 158: 144: 143: 127: 122: 32: 23: 22: 15: 12: 11: 5: 3145: 3143: 3135: 3134: 3129: 3124: 3119: 3114: 3104: 3103: 3097: 3096: 3091: 3090: 3087: 3084: 3081: 3078: 3075: 3072: 3069: 3066: 3063: 3060: 3057: 3054: 3051: 3048: 3044: 3043: 3039: 3035: 3031: 3027: 3023: 3019: 3015: 3011: 3007: 3003: 2999: 2995: 2991: 2987: 2983: 2976: 2972: 2968: 2964: 2961: 2957: 2953: 2949: 2945: 2941: 2937: 2933: 2929: 2925: 2924: 2921: 2918: 2917: 2914: 2911: 2908: 2905: 2902: 2899: 2896: 2893: 2890: 2887: 2884: 2881: 2878: 2875: 2872: 2869: 2866: 2863: 2859: 2858: 2855: 2852: 2849: 2846: 2843: 2838: 2835: 2832: 2828: 2824: 2820: 2816: 2813: 2810: 2807: 2804: 2800: 2796: 2792: 2788: 2785: 2781: 2777: 2773: 2772: 2769: 2766: 2763: 2760: 2757: 2753: 2749: 2746: 2743: 2739: 2735: 2731: 2724: 2720: 2716: 2712: 2709: 2705: 2701: 2697: 2694: 2690: 2686: 2682: 2678: 2676: 2673: 2669: 2668: 2665: 2662: 2659: 2656: 2653: 2649: 2645: 2641: 2637: 2633: 2629: 2625: 2622: 2618: 2611: 2607: 2603: 2596: 2592: 2589: 2585: 2578: 2574: 2570: 2563: 2559: 2555: 2548: 2544: 2540: 2536: 2532: 2530: 2527: 2523: 2522: 2519: 2516: 2513: 2510: 2507: 2503: 2499: 2496: 2490: 2489: 2486: 2483: 2480: 2477: 2474: 2471: 2468: 2464: 2463: 2460: 2458: 2456: 2454: 2446: 2445: 2442: 2441: 2435: 2433: 2432: 2425: 2418: 2410: 2404: 2403: 2396: 2395:External links 2393: 2390: 2389: 2360:(3): 573–581. 2336: 2325: 2324:& Co(acac) 2321: 2310: 2278: 2271: 2243: 2197: 2178: 2171: 2153: 2124: 2087: 2068:(3): 854–857. 2055: 2046: 2035:(4): 790–794. 2019: 2012: 1986: 1967: 1966: 1964: 1961: 1960: 1959: 1879: 1878:Biodegradation 1876: 1872:chelate effect 1868: 1867: 1823: 1808:Main article: 1805: 1802: 1773: 1770: 1768: 1765: 1734:benzoylacetone 1730: 1729: 1704: 1624: 1623: 1562:. Acetone and 1541: 1538: 1510:Ionic strength 1469: 1400: 1399: 1326: 1325: 1322: 1319: 1315: 1314: 1311: 1308: 1300: 1299: 1296: 1293: 1285: 1284: 1281: 1278: 1270: 1269: 1266: 1260: 1257: 1250: 1247: 1241:analogue of a 1234: 1216: 1202: 1183: 1182: 1179: 1173: 1172: 1169: 1163: 1162: 1159: 1148: 1147: 1144: 1138: 1137: 1134: 1128: 1127: 1124: 1118: 1117: 1114: 1108: 1107: 1104: 1099: 1092: 1089: 1087: 1084: 1030: 1027: 1026: 1021: 999: 998: 994:standard state 991: 988: 987: 984: 978: 977: 974: 967: 964: 963: 960: 954: 953: 943: 936: 929: 914: 913: 912: 911: 909: 900: 899: 837:P305+P351+P338 829:P303+P361+P353 754: 749: 746: 745: 708: 703: 700: 699: 694: 689: 686: 685: 663: 658: 655: 654: 644: 643: 639: 638: 635: 629: 626: 625: 624:16 g/(100 mL) 622: 617: 614: 613: 610: 604: 603: 600: 594: 593: 590: 584: 583: 580: 576: 575: 569: 563: 562: 559: 553: 547: 542: 537: 534: 533: 529: 528: 526: 525: 519: 517: 514: 512: 509: 501: 500: 499: 496: 495: 493: 492: 488: 485: 484: 482: 478: 475: 474: 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2903: 2900: 2897: 2894: 2891: 2888: 2885: 2882: 2879: 2876: 2873: 2870: 2867: 2864: 2861: 2860: 2856: 2853: 2850: 2847: 2844: 2842: 2839: 2836: 2833: 2831: 2825: 2823: 2817: 2814: 2811: 2808: 2805: 2803: 2797: 2795: 2789: 2786: 2784: 2778: 2775: 2774: 2770: 2767: 2764: 2761: 2758: 2756: 2750: 2747: 2744: 2742: 2736: 2734: 2727: 2721: 2719: 2713: 2710: 2708: 2698: 2695: 2693: 2687: 2685: 2679: 2677: 2674: 2671: 2670: 2666: 2663: 2660: 2657: 2654: 2652: 2646: 2644: 2638: 2636: 2630: 2628: 2623: 2621: 2614: 2608: 2606: 2599: 2593: 2590: 2588: 2581: 2575: 2573: 2566: 2560: 2558: 2551: 2541: 2539: 2533: 2531: 2528: 2525: 2524: 2520: 2517: 2514: 2511: 2508: 2506: 2500: 2497: 2495: 2492: 2491: 2487: 2484: 2481: 2478: 2475: 2472: 2469: 2466: 2465: 2461: 2455: 2453: 2450: 2449: 2443: 2438: 2431: 2426: 2424: 2419: 2417: 2412: 2411: 2408: 2402: 2399: 2398: 2394: 2385: 2381: 2376: 2371: 2367: 2363: 2359: 2355: 2351: 2349: 2340: 2337: 2329: 2314: 2311: 2306: 2302: 2298: 2294: 2293: 2285: 2283: 2279: 2274: 2272:9783527306732 2268: 2264: 2260: 2256: 2255: 2247: 2244: 2239: 2235: 2231: 2227: 2223: 2219: 2212: 2208: 2201: 2198: 2194: 2190: 2187: 2182: 2179: 2174: 2172:3-527-30618-8 2168: 2164: 2157: 2154: 2149: 2145: 2141: 2137: 2136: 2128: 2125: 2120: 2116: 2112: 2108: 2104: 2100: 2099: 2091: 2088: 2083: 2079: 2075: 2071: 2067: 2063: 2062: 2050: 2047: 2042: 2038: 2034: 2030: 2023: 2020: 2015: 2009: 2005: 2001: 1997: 1990: 1987: 1982: 1981:Sigma-Aldrich 1978: 1972: 1969: 1962: 1957: 1942: 1927: 1907: 1906: 1905: 1903: 1902: 1897: 1893: 1889: 1888:2-oxopropanal 1885: 1877: 1875: 1873: 1864: 1859: 1854: 1849: 1843: 1842: 1841: 1839: 1835: 1831: 1821: 1816: 1811: 1803: 1801: 1799: 1795: 1791: 1787: 1783: 1779: 1772:Condensations 1771: 1766: 1764: 1762: 1758: 1754: 1750: 1746: 1744: 1739: 1735: 1705: 1656: 1655: 1654: 1652: 1648: 1644: 1643:ethyl acetate 1629: 1592: 1591: 1590: 1581: 1565: 1561: 1556: 1554: 1549: 1547: 1539: 1537: 1535: 1531: 1527: 1523: 1519: 1518:organolithium 1515: 1511: 1507: 1496: 1492: 1484: 1480: 1476: 1472: 1468: 1462: 1458: 1456: 1453: 1449: 1445: 1441: 1437: 1433: 1429: 1425: 1421: 1417: 1404: 1366: 1365: 1364: 1362: 1337: 1333: 1323: 1320: 1317: 1316: 1312: 1309: 1306: 1302: 1301: 1297: 1294: 1291: 1287: 1286: 1282: 1279: 1276: 1272: 1271: 1265: 1261: 1258: 1255: 1254: 1248: 1246: 1244: 1240: 1233: 1228: 1226: 1222: 1215: 1211: 1207: 1200: 1197: 1196:keto and enol 1189: 1180: 1178: 1175: 1174: 1170: 1168: 1165: 1164: 1160: 1158: 1150: 1149: 1145: 1143: 1140: 1139: 1135: 1133: 1130: 1129: 1125: 1123: 1120: 1119: 1115: 1113: 1110: 1109: 1103: 1100: 1097: 1096: 1090: 1085: 1083: 1081: 1077: 1063: 1059: 1040: 1036: 1035:Acetylacetone 1024: 1017: 1012: 995: 989: 985: 983: 980: 979: 975: 972: 966: 965: 961: 959: 956: 955: 948: 941: 934: 910: 907: 906: 902: 901: 755: 752: 748: 747: 709: 706: 702: 701: 698: 695: 692: 688: 687: 683: 678: 673: 668: 664: 661: 657: 656: 652: 650: 645: 640: 636: 632: 628: 627: 623: 620: 616: 615: 611: 609: 608:Boiling point 606: 605: 601: 599: 598:Melting point 596: 595: 591: 589: 586: 585: 581: 578: 577: 570: 568: 565: 564: 543: 540: 536: 535: 530: 522: 518: 515:CC(=O)CC(=O)C 513: 510:O=C(C)CC(=O)C 508: 504: 497: 483: 473: 469: 462: 454: 450: 449:DTXSID4021979 446: 445: 443: 433: 429: 428: 424: 422: 419: 418: 411: 407: 406: 404: 402: 399: 398: 391: 390: 388: 386: 383: 382: 375: 371: 370: 368: 362: 358: 357: 350: 346: 345: 343: 341: 338: 337: 333: 330: 326: 325: 318: 317: 315: 313: 308: 307: 303: 299: 296: 294: 292:ECHA InfoCard 289: 288: 281: 277: 276: 274: 272: 269: 268: 261: 257: 256: 254: 252: 249: 248: 241: 237: 236: 234: 232: 229: 228: 224: 221: 217: 216: 209: 204: 201: 198: 194: 191: 187: 186: 184: 180: 175: 174: 167: 163: 162: 160: 157: 153: 152: 147: 139: 136: 135: 130: 126: 121: 116: 112: 107: 96: 92: 86: 82: 81: 77: 66: 62: 56: 52: 51: 47: 43: 38: 30: 19: 2723:Rh(acac)(CO) 2451: 2357: 2353: 2347: 2339: 2313: 2296: 2290: 2252: 2246: 2221: 2217: 2200: 2181: 2162: 2156: 2139: 2133: 2127: 2102: 2096: 2090: 2065: 2059: 2049: 2032: 2028: 2022: 1995: 1989: 1980: 1971: 1899: 1881: 1869: 1862: 1857: 1852: 1847: 1828: 1778:condensation 1775: 1742: 1731: 1715:] + HCl → CH 1711:C(O)CHC(O)CH 1690:C(O)CHC(O)CH 1625: 1589:) catalyst: 1557: 1550: 1543: 1532:atom at the 1505: 1494: 1478: 1474: 1466: 1463:recommended 1459: 1413: 1358: 1329: 1263: 1231: 1229: 1213: 1193: 1101: 1034: 1033: 969:Autoignition 904: 696: 648: 385:RTECS number 260:ChEMBL191625 149:Identifiers 132:Other names 124: 119: 2205:Stary, J.; 2135:Tetrahedron 1882:The enzyme 1822:of VO(acac) 1794:pyrimidines 1740:(dbaH) and 1686:→ Na[CH 1540:Preparation 1522:deprotonate 1122:Cyclohexane 1091:Tautomerism 1078:as well as 971:temperature 958:Flash point 691:Signal word 592:0.975 g/mL 579:Appearance 532:Properties 298:100.004.214 240:CHEBI:14750 125:(keto form) 120:(enol form) 115:IUPAC names 3106:Categories 2013:0471936235 1963:References 1649:(e.g., by 1534:position 1 1516:, such as 1440:bond order 1239:vinylogous 1086:Properties 986:2.4–11.6% 660:Pictograms 567:Molar mass 410:46R950BP4J 271:ChemSpider 177:3D model ( 156:CAS Number 3112:Diketones 2439:complexes 1792:provides 1786:pyrazoles 1784:produces 1782:Hydrazine 1767:Reactions 1747:analogue 1707:Na[CH 1526:alkylated 1452:bidentate 1432:resonance 1332:weak acid 1235:keto→enol 1217:keto→enol 1199:tautomers 1112:Gas phase 1105:keto→enol 1051:−C(=O)−CH 1047:−C(=O)−CH 889:P403+P235 885:P403+P233 881:P370+P378 869:P337+P313 845:P308+P313 841:P307+P311 833:P304+P340 825:P302+P352 821:P301+P312 651:labelling 521:Enol form 421:UN number 392:SA1925000 319:204-634-0 311:EC Number 203:Enol form 3038:Yb(acac) 3030:Tm(acac) 3022:Er(acac) 3014:Ho(acac) 3006:Dy(acac) 2998:Tb(acac) 2990:Gd(acac) 2982:Eu(acac) 2967:Sm(acac) 2956:Nd(acac) 2948:Pr(acac) 2940:Ce(acac) 2932:La(acac) 2841:Tl(acac) 2827:Pt(acac) 2819:Ir(acac) 2799:Hf(acac) 2791:Lu(acac) 2780:Ba(acac) 2752:In(acac) 2738:Pd(acac) 2730:Rh(acac) 2715:Ru(acac) 2689:Zr(acac) 2648:Ga(acac) 2640:Zn(acac) 2632:Cu(acac) 2617:Co(acac) 2610:Co(acac) 2602:Fe(acac) 2595:Fe(acac) 2584:Cr(acac) 2577:Cr(acac) 2569:VO(acac) 2554:Ti(acac) 2543:Ti(acac) 2535:Sc(acac) 2502:Al(acac) 2494:Na(acac) 2384:12379146 2328:handout" 2320:"Co(tfa) 2238:96848983 2209:(1982). 2189:Archived 2082:16417375 1892:iron(II) 1694:] + 2 CH 1666:ONa + CH 1508: = 1424:hydrogen 1206:symmetry 1062:tautomer 1058:diketone 905:NFPA 704 642:Hazards 633:(χ) 166:123-54-6 3122:Ligands 2975:Eu(fod) 2923:  2681:Y(acac) 2562:V(acac) 2452:H(acac) 2375:1223103 2107:Bibcode 1798:NacNacs 1670:C(O)OCH 1560:acetone 1528:at the 1428:C3 atom 1290:dioxane 1275:ethanol 1256:Solvent 1132:Toluene 1098:Solvent 1016:what is 1014: ( 588:Density 572:100.117 361:PubChem 225:741937 205:: 2704:(acac) 2382:  2372:  2269:  2236:  2169:  2080:  2010:  1745:-butyl 1727:+ NaCl 1723:C(O)CH 1719:C(O)CH 1682:C(O)CH 1653:HCl): 1618:C(O)CH 1614:C(O)CH 1606:C(O)CH 1602:O + CH 1530:carbon 1455:ligand 1444:oxygen 1324:13.41 1313:10.16 1307:/water 1292:/water 1277:/water 1037:is an 1011:verify 1008:  697:Danger 503:SMILES 349:C15499 251:ChEMBL 109:Names 3132:Enols 2331:(PDF) 2299:: 6. 2234:S2CID 2214:(PDF) 1598:C(O)) 1572:C(O)) 1514:bases 1499:NaClO 1487:NaClO 1461:IUPAC 1336:anion 1298:12.5 1181:0.23 1177:Water 1116:11.7 468:InChI 425:2310 374:31261 334:2537 280:29001 231:ChEBI 179:JSmol 137:Hacac 2380:PMID 2267:ISBN 2167:ISBN 2078:PMID 2008:ISBN 1896:zinc 1838:base 1790:Urea 1755:and 1743:tert 1678:+ CH 1610:→ CH 1408:acac 1360:acac 1318:DMSO 1305:DMSO 1303:80% 1288:70% 1283:9.8 1273:40% 1259:T/°C 1194:The 1167:DMSO 1161:5.7 1153:CDCl 1146:7.2 897:P501 893:P405 877:P363 873:P361 865:P330 861:P322 857:P321 853:P312 849:P311 817:P281 813:P280 809:P273 805:P271 801:P270 797:P264 793:P261 789:P260 785:P243 781:P242 777:P241 773:P240 769:P233 765:P210 761:P202 757:P201 743:H412 739:H370 735:H341 731:H335 727:H331 723:H320 719:H311 715:H302 711:H226 401:UNII 340:KEGG 3089:No 3086:Md 3083:Fm 3080:Es 3077:Cf 3074:Bk 3071:Cm 3068:Am 3065:Pu 3062:Np 3056:Pa 3053:Th 3050:Ac 3047:** 2963:Pm 2916:Og 2913:Ts 2910:Lv 2907:Mc 2904:Fl 2901:Nh 2898:Cn 2895:Rg 2892:Ds 2889:Mt 2886:Hs 2883:Bh 2880:Sg 2877:Db 2874:Rf 2871:Lr 2868:** 2865:Ra 2862:Fr 2857:Rn 2854:At 2851:Po 2848:Bi 2845:Pb 2837:Hg 2834:Au 2815:Os 2812:Re 2806:Ta 2776:Cs 2771:Xe 2765:Te 2762:Sb 2759:Sn 2748:Cd 2745:Ag 2711:Tc 2700:MoO 2696:Nb 2675:Sr 2672:Rb 2667:Kr 2664:Br 2661:Se 2658:As 2655:Ge 2591:Mn 2529:Ca 2521:Ar 2518:Cl 2509:Si 2498:Mg 2488:Ne 2470:Be 2467:Li 2462:He 2370:PMC 2362:doi 2358:369 2301:doi 2259:doi 2226:doi 2144:doi 2115:doi 2070:doi 2066:128 2037:doi 2000:doi 1840:: 1639:ONa 1594:(CH 1568:(CH 1397:+ H 1380:⇌ C 1363:): 1142:THF 1136:10 1126:42 649:GHS 437:EPA 364:CID 3108:: 3059:U 2928:* 2809:W 2787:* 2768:I 2547:Cl 2526:K 2515:S 2512:P 2485:F 2482:O 2479:N 2476:C 2473:B 2378:. 2368:. 2356:. 2352:. 2297:20 2295:. 2281:^ 2265:. 2232:. 2222:54 2220:. 2216:. 2140:26 2138:. 2113:. 2103:88 2101:. 2076:. 2064:. 2056:2v 2033:93 2031:. 2006:. 1998:. 1979:. 1943:+ 1928:→ 1921:+ 1904:. 1865:BH 1861:+ 1851:+ 1845:MB 1818:A 1763:. 1751:. 1736:, 1702:OH 1698:CH 1674:CH 1662:CH 1658:CH 1635:CH 1631:CH 1584:BF 1548:. 1504:; 1457:. 1321:25 1310:25 1295:28 1280:30 1223:, 1212:, 1203:2v 1171:2 1082:. 1065:CH 1043:CH 895:, 891:, 887:, 883:, 879:, 875:, 871:, 867:, 863:, 859:, 855:, 851:, 847:, 843:, 839:, 835:, 831:, 827:, 823:, 819:, 815:, 811:, 807:, 803:, 799:, 795:, 791:, 787:, 783:, 779:, 775:, 771:, 767:, 763:, 759:, 741:, 737:, 733:, 729:, 725:, 721:, 717:, 713:, 653:: 3040:3 3032:3 3024:3 3016:3 3008:3 3000:3 2992:3 2984:3 2977:3 2969:3 2958:3 2950:3 2942:3 2934:3 2829:2 2821:3 2801:4 2793:3 2782:2 2754:3 2740:2 2732:3 2725:2 2717:3 2706:2 2702:2 2691:4 2683:3 2650:3 2642:2 2634:2 2626:3 2619:3 2612:2 2604:3 2597:2 2586:3 2579:2 2571:2 2564:3 2556:3 2549:2 2545:2 2537:3 2504:3 2429:e 2422:t 2415:v 2386:. 2364:: 2350:" 2326:3 2322:3 2308:. 2303:: 2275:. 2261:: 2240:. 2228:: 2175:. 2150:. 2146:: 2121:. 2117:: 2109:: 2084:. 2072:: 2043:. 2039:: 2016:. 2002:: 1983:. 1955:2 1953:O 1951:4 1949:H 1947:3 1945:C 1940:2 1938:O 1936:4 1934:H 1932:2 1930:C 1925:2 1923:O 1919:2 1917:O 1915:8 1913:H 1911:5 1909:C 1863:z 1858:z 1853:z 1848:z 1824:2 1725:3 1721:2 1717:3 1713:3 1709:3 1700:2 1696:3 1692:3 1688:3 1684:3 1680:3 1676:3 1672:2 1668:3 1664:2 1660:3 1637:2 1633:3 1620:3 1616:2 1612:3 1608:3 1604:3 1600:2 1596:3 1586:3 1582:( 1576:O 1574:2 1570:3 1566:( 1536:. 1506:I 1501:4 1495:I 1489:4 1483:M 1479:I 1475:I 1470:a 1467:K 1465:p 1420:O 1418:- 1416:C 1410:) 1394:2 1391:− 1388:O 1386:7 1384:H 1382:5 1378:2 1376:O 1374:8 1372:H 1370:5 1368:C 1353:2 1350:− 1347:O 1345:7 1343:H 1341:5 1339:C 1267:a 1264:K 1262:p 1245:. 1232:K 1214:K 1155:3 1102:K 1071:3 1067:3 1053:3 1049:2 1045:3 1006:Y 946:0 939:2 932:2 560:2 557:O 554:8 551:H 548:5 545:C 439:) 435:( 181:) 31:. 20:)

Index

Pentane-2,4-dione
ACAC (disambiguation)
Skeletal structures of both tautomers
Ball-and-stick model of the enol tautomer
Ball-and-stick model of the keto tautomer
Space-filling model of the enol tautomer
Space-filling model of the keto tautomer
IUPAC names
CAS Number
123-54-6
JSmol
Interactive image
Interactive image
Enol form
Interactive image
Beilstein Reference
ChEBI
CHEBI:14750
ChEMBL
ChEMBL191625
ChemSpider
29001
ECHA InfoCard
100.004.214
Edit this at Wikidata
EC Number
Gmelin Reference
KEGG
C15499
PubChem

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