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亚苄基丙酮

亚苄基丙酮
IUPAC名
4-Phenyl-3-buten-2-one
别名 Benzalacetone
Benzylideneacetone
Methyl styryl ketone
Benzylidene acetone
识别
CAS号 122-57-6  checkY
1896-62-4(反式)  checkY
PubChem 11147801(顺式)
637759(反式)
ChemSpider 21106584
SMILES
 
  • CC(=O)/C=C/c1ccccc1
InChI
 
  • 1/C10H10O/c1-9(11)7-8-10-5-3-2-4-6-10/h2-8H,1H3/b8-7+
InChIKey BWHOZHOGCMHOBV-BQYQJAHWBQ
ChEBI 217301
RTECS EN0330000
性质
化学式 C10H10O
摩尔质量 146.19 g/mol g·mol⁻¹
外观 黄白色固体
密度 1.008 g/cm3
熔点 39–42 °C
沸点 260–262 °C
溶解性 1.3 g/L
溶解性(其他溶剂) 非极性溶剂
危险性
警示术语 R:36/37/38-43
安全术语 S:22-26-36/37
主要危害 刺激性
闪点 116 °C
相关物质
相关化学品 二亚苄基丙酮
肉桂醛
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

亚苄基丙酮是一种有机化合物结构简式C6H5CH=CHC(O)CH3。虽然从理论上该α,β-不饱和化合物同时存在顺反异构体,但至今只发现了其反式异构体。该化合物的最早合成方法说明了缩合反应可以合成诸多复杂的全新有机化合物。[1]

制备

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亚苄基丙酮可简便的通过氢氧化钠介导的丙酮苯甲醛反应制备:[2]

CH3C(O)CH3 + C6H5CHO → C6H5CH=CHC(O)CH3 + H2O
反应机理

反应

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如同大多数的甲基酮化合物,亚苄基丙酮是一种alpha位具有温和酸性的化合物,非常容易通过去质子化得到相应的烯醇化合物。[3]

该化合物因含有以下官能团而可发生相应反应,如:双键对溴素的加成反应;杂二烯烃化合物对于烯烃Diels-Alder反应,得到二氢吡喃化合物;甲基可进一步与苯甲醛发生缩合反应得到二亚苄基丙酮;羰基可形成。该化合物还可与Fe2(CO)9反应得到(亚苄基丙酮)Fe(CO)3,这是一种可将Fe(CO)3传递给其他有机化学底物的试剂。[4]

参考文献

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  1. ^ Claisen, L. "Über die Einwirkung von Aceton auf Furfural und auf Benzaldehyd bei Gegenwart von Alkalilauge" Berichte der deutschen chemischen Gesellschaft 1881, volume 14, p 2468-2471.
  2. ^ Drake, N. L.; Allen, Jr. P.. "Benzalacetone". Org. Synth.; Coll. Vol. 1: 77. 
  3. ^ Danheiser, R. L.; Miller, R. F.; Brisbois, R. G. (1990). "Detrifluoroacetylative Diazo Group Transfer: (E)-1-Diazo-4-phenyl-3-buten-2-one". Org. Synth. 73: 134; Coll. Vol. 9: 197. 
  4. ^ Knölker, H.-J. "(η4-Benzylideneacetone)tricarbonyliron" in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. Onlinedoi:10.1002/047084289X.rb058.
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亚苄基丙酮
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