(E)-4-bromo-4-methyl-1-phenylpent-1-en-3-one

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: (E)-4-bromo-4-methyl-1-phenylpent-1-en-3-one
• 化学式: C₁₂H₁₃BrO
• 分子量: 253.139
• InChiKey: LYDXYGFVXNGODU-CMDGGOBGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  (1E)-4-methyl-1-phenylpent-1-en-3-one 在 三苯基膦氢溴酸盐 、 二甲基亚砜 作用下， 反应 12.0h， 以76%的产率得到(E)-4-bromo-4-methyl-1-phenylpent-1-en-3-one
  参考文献：
  名称：

  PPh₃·HBr–DMSO: A Reagent System for Diverse Chemoselective Transformations

  摘要：

  The broad applicability of the hitherto unexplored reagent combination PPh3 center dot HBr-DMSO is exemplified with multiple highly diverse one-step transformations to synthetically useful building blocks, such as flavones, 4H-thiochromen-4-ones, alpha-hydroxy ketones, 1,4-naphthoquinones (including vitamin K-3), 2-bromo-3-substituted-1H-1-indenones, 2-rnethylthio-1H-1-indenones, 3-butyne-1,2-dione, and 4-pentene-2,3-diones. The simple and mild reaction conditions make the reagent superior in terms of yield and substrate scope in comparison with the existing alternatives.

  DOI：

  10.1021/acs.joc.5b00846

文献信息

• PPh₃·HBr–DMSO: A Reagent System for Diverse Chemoselective Transformations
  作者：Kanchan Mal、Amanpreet Kaur、Fazle Haque、Indrajit Das

  DOI：10.1021/acs.joc.5b00846

  日期：2015.6.19

  The broad applicability of the hitherto unexplored reagent combination PPh3 center dot HBr-DMSO is exemplified with multiple highly diverse one-step transformations to synthetically useful building blocks, such as flavones, 4H-thiochromen-4-ones, alpha-hydroxy ketones, 1,4-naphthoquinones (including vitamin K-3), 2-bromo-3-substituted-1H-1-indenones, 2-rnethylthio-1H-1-indenones, 3-butyne-1,2-dione, and 4-pentene-2,3-diones. The simple and mild reaction conditions make the reagent superior in terms of yield and substrate scope in comparison with the existing alternatives.