A metal‐free dehydrogenative Diels‐Alderreaction of substituted alkenes for the synthesis of tetrahydroisoindolinones has been exploited for the first time. This new method features functional group tolerance and broad substrate scope, providing an efficient access to biologically active tetrahydroisoindolinone skeletons with endo steroselectivity in good to excellent yields.
The reaction between secondary Grignardreagents and alkylthioarenes or alkylthioalkenes in the presence of 1:1 nickel dichloride–triphenylphosphine causing the substitution of alkylthio-groups by hydrogen atoms, the nickel(0)-induced replacement of alkylthio-groups of the aforementioned sulphides by alkyl or aryl functions, and the observation of regiocontrol in the catalysed reactions of Grignard
Regio- and stereo-selective γ-substitution of allylic sulphoxides and sulphones with lithium dialkylcuprates. A new synthesis of trisubstituted olefins
作者:Yukio Masaki、Kazuhiko Sakuma、Kenji Kaji
DOI:10.1039/c39800000434
日期:——
A new regio- and stereo-selective γ-substitution of allylic sulphoxides and sulphones with lithium dialkylcuprates providing a promising new method for the preparation of trisubstituted olefins in particular is described.