Palladium/norbornene-catalyzed distal alkenyl C-H arylation and alkylation of cis-olefins

钯/降冰片烯催化远端烯基 CH 芳基化和顺式烯烃烷基化

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作者:Zhao Wu, Nina Fatuzzo, Guangbin Dong

Abstract

In this full article, a detailed study of a distal alkenyl C-H arylation and alkylation through the palladium/norbornene (NBE) cooperative catalysis is described. Both aminopyridine- and oxime ether-type directing groups have been found effective for this transformation, allowing functionalization of diverse allyl amines and homoallyl alcohols. In addition, the C5,C6-substititued NBEs show optimal reactivity and selectivity. Various cis-olefins can be transformed to the corresponding arylated or alkylated trisubstituted alkenes with excellent regio- and stereoselectivity. Preliminary mechanistic studies support the Catellani pathway instead of the Heck pathway.

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