2,3-Sigmatropic Rearrangement of Sulfonium Ylides Generated by Addition of Samarium Carbenoids
作者:Munetaka Kunishima、Daisuke Nakata、Chikako Goto、Kazuhito Hioki、Shohei Tani
DOI:10.1055/s-1998-1979
日期:1998.12
Allylic sulfides are transformed into homoallylic sulfides with complete allylic inversion by treatment with SmI2 and CH2I2 in THF. The reaction will involve allylic sulfonium ylides as an intermediate, which undergoes 2,3-rearrangement.
Highly Regioselective Thiocarbonylation of Conjugated Dienes via Palladium-Catalyzed Three-Component Coupling Reactions
作者:Wen-Jing Xiao、Giuseppe Vasapollo、Howard Alper
DOI:10.1021/jo000231o
日期:2000.6.1
Three-component coupling reaction of conjugated dienes, thiols, and carbon monoxide affords an atom-economical thiocarbonylation of the dienes to give beta,gamma-unsaturated thioesters as the sole products. A catalyst system based on [Pd(OAc)(2)] and Ph(3)P showed excellent catalytic activity. The thiocarbonylation was performed under an atmosphere of carbon monoxide (400 psi) at 110 degrees C in CH(2)Cl(2)