Regio- and stereoselective anti-Markovnikoff hydrosulfonylation of conjugated dienes via .pi.-allylpalladium complex: synthesis of (Z)-.DELTA.3-alkenyl sulfones
The Codimerization of Styrene and Butadiene with Three-Component Catalysts Consisting of Palladium Salt, Lewis Acid, and Tertiary Phosphine
作者:Takehiko Ito、Yasuo Takami
DOI:10.1246/bcsj.51.1220
日期:1978.4
The reaction of styrene and butadiene in the presence of a three-component catalyst consisting of a palladium salt, a Lewis acid, and a tertiaryphosphine was investigated. As the three-component catalyst, combinations of such palladium(II) salts as (π-C3H5PdCl)2, (PdCl2·C6H5CH=CH2)2 and Pd(acac)2, such Lewis acids as BF3 and AlCl3, and such tertiaryphosphines as Ph3P and Bu3P were adopted. From the
Regio- and stereoselective anti-Markovnikoff hydrosulfonylation of conjugated dienes via .pi.-allylpalladium complex: synthesis of (Z)-.DELTA.3-alkenyl sulfones
作者:Yoshinao Tamaru、Masahiro Kagotani、Ryoshu Suzuki、Zenichi Yoshida
DOI:10.1021/jo00329a058
日期:1981.7
Reactivity of Aldehydes with Semi-Stabilised Arsonium Ylide Anions: Synthesis of Terminal (E)-1,3-Dienes
for the E isomer (E/Z ratios ranging from 90:10 to 97:3). The olefination reactions of aldehydes with dissymmetric arsonium halides (R not equal R') are very chemoselective; with arsonium ylide anions the benzyl moiety is more reactive than the allyl moiety which is much more reactive than prenyl and methyl groups. Based on the experimental results, a mechanism is proposed for the reaction.