p-(trans-2-Phenylcyclopropyl)acetophenone | 14637-69-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: p-(trans-2-Phenylcyclopropyl)acetophenone
• 英文别名: 1-[4-[(1S,2S)-2-phenylcyclopropyl]phenyl]ethanone
• CAS: 14637-69-5；15465-78-8
• 化学式: C₁₇H₁₆O
• 分子量: 236.313
• InChiKey: RGLSLMAODDWWGI-IAGOWNOFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  p-(trans-2-Phenylcyclopropyl)acetophenone 以 苯 为溶剂， 生成 1-[4-(cis-2-phenylcyclopropyl)phenyl]ethanone
  参考文献：
  名称：

  Photochemical C−C Bond Cleavage of 1,2-Diarylcyclopropanes Bearing an Acetylphenyl Group. Generation and Observation of Triplet 1,3-Biradicals

  摘要：

  The photochemical properties of 1,2-diarylcyclopropanes bearing an acetylphenyl group were studied by product analysis and laser flash photolysis. All cyclopropanes showed efficient cis-trans photoisomerization followed by inefficient isomerization to 1,3-diarylpropenes. All the products were unquenched by the addition of triplet quencher, 2-methyl-1,3-butadiene (E-T similar or equal to 60 kcal mol(-1)), whereas molecular dioxygen gave oxygenated products. Triplet 1,3-biradicals generated from a short-lived acetophenone-like triplet (less than or similar to 1 ns) were observed as intermediates in these reactions through nanosecond laser flash photolysis. Polar substituent effects on the lifetime of the 1,3-biradicals were small, except for a heavy atom effect in the case of Br. Spin-orbit coupling calculations on model 1,3-biradicals show a negligible effect on polar substituent and thus predict a negligible effect on the intersystem crossing rate. Conjugated biradicals in general now seem unlikely to show the "ionic character effect" on intersystem crossing suggested by the work of Salem and Rowland.

  DOI：

  10.1021/jo971111s
• 作为产物：
  描述：

  (反式)-1,1'-(1,2-环丙烷二基)二苯 、 乙酰氯 以 氯仿 为溶剂， 以36%的产率得到p-(trans-2-Phenylcyclopropyl)acetophenone
  参考文献：
  名称：

  p-(2-取代环丙基)-α-甲基苄基氯化物溶剂分解中的取代基效应

  摘要：

  在 80% 丙酮水溶液中测量了对（顺式或反式-2-取代的环丙基）-α-甲基苄基氯的溶剂分解速率，包括相对于氢取代基的给电子和吸电子取代基。反式异构体比相应的顺式衍生物更具反应性，其中环丙基和苯基无法获得最有利的“二等分”构象，环丙基将电子释放到苯环。反式异构体在 45°C 下的相对速率通过 σm 值与 ρ 值为 -3.14 和相关系数为 0.97 的相关性最好，表明环丙烷环是一种较差的共振效应发射器。通过LSFE方程分析取代基效应。

  DOI：

  10.1246/bcsj.64.2954

文献信息

• Shabarov,Yu.S. et al., Journal of Organic Chemistry USSR (English Translation), 1966, vol. 2, p. 2111 - 2115
  作者：Shabarov,Yu.S. et al.

  DOI：——

  日期：——
• Substituent Effects in the Solvolysis of<i>p</i>-(2-Substituted Cyclopropyl)-α-Methylbenzyl Chlorides
  作者：Yoshiaki Kusuyama、Takako Kubo、Masami Iyo、Tamami Kagosaku、Kenjiro Tokami

  DOI：10.1246/bcsj.64.2954

  日期：1991.10

  The solvolysis rates of p-(cis- or trans-2-substituted cyclopropyl)-α-methylbenzyl chlorides including electron-donating and electron-attracting substituents relative to a hydrogen substituent were measured in 80% aqueous acetone. The trans isomers were more reactive than the corresponding cis derivatives where cyclopropyl and phenyl groups could not get a most favorable “bisected” conformation for

  在 80% 丙酮水溶液中测量了对（顺式或反式-2-取代的环丙基）-α-甲基苄基氯的溶剂分解速率，包括相对于氢取代基的给电子和吸电子取代基。反式异构体比相应的顺式衍生物更具反应性，其中环丙基和苯基无法获得最有利的“二等分”构象，环丙基将电子释放到苯环。反式异构体在 45°C 下的相对速率通过 σm 值与 ρ 值为 -3.14 和相关系数为 0.97 的相关性最好，表明环丙烷环是一种较差的共振效应发射器。通过LSFE方程分析取代基效应。
• Photochemical C−C Bond Cleavage of 1,2-Diarylcyclopropanes Bearing an Acetylphenyl Group. Generation and Observation of Triplet 1,3-Biradicals
  作者：Nobuyuki Ichinose、Kazuhiko Mizuno、Yoshio Otsuji、Richard A. Caldwell、Anna M. Helms

  DOI：10.1021/jo971111s

  日期：1998.5.1

  The photochemical properties of 1,2-diarylcyclopropanes bearing an acetylphenyl group were studied by product analysis and laser flash photolysis. All cyclopropanes showed efficient cis-trans photoisomerization followed by inefficient isomerization to 1,3-diarylpropenes. All the products were unquenched by the addition of triplet quencher, 2-methyl-1,3-butadiene (E-T similar or equal to 60 kcal mol(-1)), whereas molecular dioxygen gave oxygenated products. Triplet 1,3-biradicals generated from a short-lived acetophenone-like triplet (less than or similar to 1 ns) were observed as intermediates in these reactions through nanosecond laser flash photolysis. Polar substituent effects on the lifetime of the 1,3-biradicals were small, except for a heavy atom effect in the case of Br. Spin-orbit coupling calculations on model 1,3-biradicals show a negligible effect on polar substituent and thus predict a negligible effect on the intersystem crossing rate. Conjugated biradicals in general now seem unlikely to show the "ionic character effect" on intersystem crossing suggested by the work of Salem and Rowland.