trans-1,2-diphenyl-1,2-dimethylcyclopropane | 32134-42-2

• 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: trans-1,2-diphenyl-1,2-dimethylcyclopropane
• 英文别名: (1,2-Dimethyl-2-phenylcyclopropyl)benzene
• CAS: 32134-42-2
• 化学式: C₁₇H₁₈
• 分子量: 222.33
• InChiKey: HXAAXPCCMXWUGY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  二苯基重氮甲烷 、 2-苯基-1-丙烯 在 [CpRuCl(Ph2PN(H)C6H11)(PPh3)] 作用下， 反应 6.5h， 以49%的产率得到1,1,2-三苯基-2-甲基环丙烷
  参考文献：
  名称：

  Half-sandwich ruthenium(II) complexes of aminophosphines: synthesis, structures and catalytic applications in C–C coupling reactions between styrenes and diphenyldiazomethane

  摘要：

  The half-sandwich Ru(II) complexes of the type [CpRu(PPh2N(H)R)(PPh3)Cl], [CpRu(PPh2N(H)R)(2)Cl] (R = Ph, C6H11) and [CpRu(PPh2N(R')PPh2-kappaP,kappaP)(PPh3)]Cl (R' = Et, Pr-n, Pr-i, Bu-n), were synthesized and the structures of complexes [CpRu(PPh2N(H)Ph)(PPh3)Cl] and [CpRu(PPh2N(H)Ph)(2)Cl] were confirmed by single crystal X-ray diffraction studies. All ruthenium complexes were employed in the cyclopropanation reaction of styrene derivatives in the presence of diphenyldiazomethane. All complexes afford 1,1,3,3-tetraphenyl cyclobutane along with cyclopropane derivatives; complex, [CpRu(PPh2N(Bu-n)PPh2-kappaP,kappaP)(PPh3)]Cl shows better selectivity in the formation of 1,1,2-triphenylcyclopropane. In all reactions appreciable amounts of cyclopropanation products and metathesis products, 1,2-diphenylcyclopropane and 1,1-diphenylethene were obtained along with 1,1,3-triphenylpropene derivatives. The variable temperature NMR studies have suggested that the cyclopropanation reactions in the presence of ionic complex, [CpRu(PPh2N(R')PPh2-kappaP,kappaP)(PPh3)]Cl proceeds via carbene intermediate, [CpRu(= CPh2)(Pph(2)N(R')PPh2-kappaP)(PPh3)]Cl. (C) 2003 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jorganchem.2003.09.020

文献信息

• Half-sandwich ruthenium(II) complexes of aminophosphines: synthesis, structures and catalytic applications in C–C coupling reactions between styrenes and diphenyldiazomethane
  作者：Srinivasan Priya、Maravanji S. Balakrishna、Shaikh M. Mobin、Robert McDonald

  DOI：10.1016/j.jorganchem.2003.09.020

  日期：2003.12

  The half-sandwich Ru(II) complexes of the type [CpRu(PPh2N(H)R)(PPh3)Cl], [CpRu(PPh2N(H)R)(2)Cl] (R = Ph, C6H11) and [CpRu(PPh2N(R')PPh2-kappaP,kappaP)(PPh3)]Cl (R' = Et, Pr-n, Pr-i, Bu-n), were synthesized and the structures of complexes [CpRu(PPh2N(H)Ph)(PPh3)Cl] and [CpRu(PPh2N(H)Ph)(2)Cl] were confirmed by single crystal X-ray diffraction studies. All ruthenium complexes were employed in the cyclopropanation reaction of styrene derivatives in the presence of diphenyldiazomethane. All complexes afford 1,1,3,3-tetraphenyl cyclobutane along with cyclopropane derivatives; complex, [CpRu(PPh2N(Bu-n)PPh2-kappaP,kappaP)(PPh3)]Cl shows better selectivity in the formation of 1,1,2-triphenylcyclopropane. In all reactions appreciable amounts of cyclopropanation products and metathesis products, 1,2-diphenylcyclopropane and 1,1-diphenylethene were obtained along with 1,1,3-triphenylpropene derivatives. The variable temperature NMR studies have suggested that the cyclopropanation reactions in the presence of ionic complex, [CpRu(PPh2N(R')PPh2-kappaP,kappaP)(PPh3)]Cl proceeds via carbene intermediate, [CpRu(= CPh2)(Pph(2)N(R')PPh2-kappaP)(PPh3)]Cl. (C) 2003 Elsevier B.V. All rights reserved.