A novel approach to functionalized (E)-1,4-diaryl-1-butenes by Heck reaction and their applications for the construction of dibenzylbutyrolactone lignan skeletons by radical cyclization
作者:Rekha Singh、Gobind C. Singh、Sunil K. Ghosh
DOI:10.1016/j.tetlet.2005.05.050
日期:2005.7
[Pd(allyl)Cl]2 catalyzed Heckreaction of aryl iodides and electronically neutral terminal olefins generated in situ by fluoride induced protiodesilylation of alkenylsilanol derivatives under mild conditions has been developed. The products, viz. terminally substituted styrenes and (E)-1,4-diaryl-1-butenes were obtained in very good yields. The dibenzylbutyrolactonelignan skeletons have been prepared
Synthesis of Functionalized 1-Substituted Alkenylsilanols and Establishment of Conditions for Their Palladium-Catalyzed Cross-Coupling Reactions To Afford 1-Substituted Styrene Derivatives
作者:Sunil K. Ghosh、Rekha Singh、Gobind C. Singh
DOI:10.1002/ejoc.200400339
日期:2004.10
method for the quantitative conversion of 1-substituted alkenyl(phenyl)silanes into the corresponding alkenylsilanols has been developed and used in their palladium(0)-catalyzed, tetrabutylammonium fluoride-promoted cross-coupling reaction with aryliodides. Copper(I) chloride