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| 1,3-环戊二酮
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IUPAC名
cyclopentane-1,3-dione
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| 识别
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| CAS号
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3859-41-4
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| PubChem
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77466
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| ChemSpider
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69875
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| SMILES
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| Beilstein
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1362728
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| Gmelin
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200797
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| ChEBI
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41456
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| 性质
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| 化学式
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C5H6O2
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| 摩尔质量
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98.1 g·mol−1
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| 外观
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白色固体
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| 密度
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1.37 g/cm3
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| 熔点
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149—151 °C（300—304 °F；422—424 K）
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| 危险性
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GHS危险性符号
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| GHS提示词
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Warning
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| H-术语
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H315, H319, H335
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| P-术语
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P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P403+233, P405
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| 若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。
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1,3-环戊二酮是一种有机化合物，化学式为(CH2)3(CO)2，它是1,2-环戊二酮的同分异构体。它的烯醇形式比二酮形式更稳定（1-3 kcal/mol），[1]其烯醇结构经X射线衍射表征。[2]
制备
1,3-环戊二酮可由2-环戊烯-1,4-二酮和锌/乙酸的氢化反应得到。[3][4]
参考文献
- ^ Jana, Kalyanashis; Ganguly, Bishwajit. DFT Study to Explore the Importance of Ring Size and Effect of Solvents on the Keto–Enol Tautomerization Process of α- and β-Cyclodiones. ACS Omega. 2018, 3 (7): 8429–8439. PMC 6644555
 . PMID 31458971. doi:10.1021/acsomega.8b01008.
- ^ Katrusiak, A. Structure of 1,3-cyclopentanedione. Acta Crystallographica Section C Crystal Structure Communications. 1990, 46 (7): 1289–1293. doi:10.1107/S0108270189011352.
- ^ McIntosh, John M.; Beaumier, Pierre. Improved Preparation of 1,3-cyclopentanedione. The Journal of Organic Chemistry. 1972, 37 (18): 2905–2906. doi:10.1021/jo00983a027.
- ^ Gary H. Rasmusson, Herbert O. House, Edward F. Zaweski, and Charles H. DePuy. 2-Cyclopentene-1,4-Dione. Organic Syntheses. 1962, 42: 36. doi:10.15227/orgsyn.042.0036.
Information related to 1,3-环戊二酮 |
