(η-C3H5)Pd(Cl)P(cyclopentyl)3 | 274933-83-4

• 分子结构分类: 有机化合物 - 有机磷化合物 - 有机膦及其衍生物
• 英文名称: (η-C3H5)Pd(Cl)P(cyclopentyl)3
• 英文别名: Palladium(2+);prop-1-ene;tricyclopentylphosphane;chloride；palladium(2+);prop-1-ene;tricyclopentylphosphane;chloride
• CAS: 274933-83-4
• 化学式: C₁₈H₃₂ClPPd
• 分子量: 421.299
• InChiKey: VPBANOVNDCIPQA-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  bis(η3-allyl-μ-chloropalladium(II)) 、 三环戊基膦 以 乙醚 为溶剂， 以72%的产率得到(η-C3H5)Pd(Cl)P(cyclopentyl)3
  参考文献：
  名称：

  Development, Synthetic Scope, and Mechanistic Studies of the Palladium-Catalyzed Cycloisomerization of Functionalized 1,6-Dienes in the Presence of Silane

  摘要：

  A 1:1 mixture of the pi-allyl palladium complex (eta (3)-C3H5)Pd(CI)PCy3 Cia) and NaB[3,5-C6H3(CF3)(2)](4) in the presence of HSiEt3 catalyzed the cycloisomerization of diethyl diallylmalonate (2b) to form 4,4-dicarbomethoxy 1,2-dimethylcyclopentane (3b) in 98% yield with 98% isomeric purity. The procedure tolerated a range of functionality including esters, ketones, sulfones, protected alcohols, and substitution at the allylic and terminal olefinic carbon atoms. Cycloisomerization of 2b obeyed zero-order kinetics to >3 half-lives with initial formation of 1,1-dicarboethoxy-4-methyl-3-methylenecyclopentane (4b), followed by secondary isomerization to 3b. Deuterium labeling studies revealed that the conversion of 2b to 4b was accompanied by significant H/D exchange, consistent with an addition/elimination pathway coupled with facile H/D exchange of the Pd-H(D) intermediates with free silane.

  DOI：

  10.1021/ja001730+
• 作为试剂：
  描述：

  二烯丙基丙二酸二甲酯 在 三乙基硅烷 、 (η-C3H5)Pd(Cl)P(cyclopentyl)3 、 四(3,5-二(三氟甲基)苯基)硼酸钠 作用下， 以 二氯甲烷 为溶剂， 反应 0.17h， 以89%的产率得到1,1-Dimethylcarboxy-3,4-dimethylcyclopent-3-ene
  参考文献：
  名称：

  Development, Synthetic Scope, and Mechanistic Studies of the Palladium-Catalyzed Cycloisomerization of Functionalized 1,6-Dienes in the Presence of Silane

  摘要：

  A 1:1 mixture of the pi-allyl palladium complex (eta (3)-C3H5)Pd(CI)PCy3 Cia) and NaB[3,5-C6H3(CF3)(2)](4) in the presence of HSiEt3 catalyzed the cycloisomerization of diethyl diallylmalonate (2b) to form 4,4-dicarbomethoxy 1,2-dimethylcyclopentane (3b) in 98% yield with 98% isomeric purity. The procedure tolerated a range of functionality including esters, ketones, sulfones, protected alcohols, and substitution at the allylic and terminal olefinic carbon atoms. Cycloisomerization of 2b obeyed zero-order kinetics to >3 half-lives with initial formation of 1,1-dicarboethoxy-4-methyl-3-methylenecyclopentane (4b), followed by secondary isomerization to 3b. Deuterium labeling studies revealed that the conversion of 2b to 4b was accompanied by significant H/D exchange, consistent with an addition/elimination pathway coupled with facile H/D exchange of the Pd-H(D) intermediates with free silane.

  DOI：

  10.1021/ja001730+

文献信息

• Development, Synthetic Scope, and Mechanistic Studies of the Palladium-Catalyzed Cycloisomerization of Functionalized 1,6-Dienes in the Presence of Silane
  作者：Philip Kisanga、Ross A. Widenhoefer

  DOI：10.1021/ja001730+

  日期：2000.10.1

  A 1:1 mixture of the pi-allyl palladium complex (eta (3)-C3H5)Pd(CI)PCy3 Cia) and NaB[3,5-C6H3(CF3)(2)](4) in the presence of HSiEt3 catalyzed the cycloisomerization of diethyl diallylmalonate (2b) to form 4,4-dicarbomethoxy 1,2-dimethylcyclopentane (3b) in 98% yield with 98% isomeric purity. The procedure tolerated a range of functionality including esters, ketones, sulfones, protected alcohols, and substitution at the allylic and terminal olefinic carbon atoms. Cycloisomerization of 2b obeyed zero-order kinetics to >3 half-lives with initial formation of 1,1-dicarboethoxy-4-methyl-3-methylenecyclopentane (4b), followed by secondary isomerization to 3b. Deuterium labeling studies revealed that the conversion of 2b to 4b was accompanied by significant H/D exchange, consistent with an addition/elimination pathway coupled with facile H/D exchange of the Pd-H(D) intermediates with free silane.