Rhodium-Catalyzed Vinylcyclopropanation/Cyclopentenation of Strained Alkenes via a Sequential Carborhodation Process
摘要:
A rhodium-catalyzed reaction of dienylboronate esters with alkenes is described. Strained bicyclic alkenes show the highest reactivity toward the rhodium-catalyzed addition of the dienylboronate esters. Depending on the substitution pattern of dienylboronate esters, an intramolecular 1,6- or 1,4-addition mechanism may be operative, affording carbocycles containing a vinylcyclopropane or cyclopentene moiety.
Rhodium-Catalyzed Vinylcyclopropanation/Cyclopentenation of Strained Alkenes via a Sequential Carborhodation Process
摘要:
A rhodium-catalyzed reaction of dienylboronate esters with alkenes is described. Strained bicyclic alkenes show the highest reactivity toward the rhodium-catalyzed addition of the dienylboronate esters. Depending on the substitution pattern of dienylboronate esters, an intramolecular 1,6- or 1,4-addition mechanism may be operative, affording carbocycles containing a vinylcyclopropane or cyclopentene moiety.
Rhodium-Catalyzed Vinylcyclopropanation/Cyclopentenation of Strained Alkenes via a Sequential Carborhodation Process
作者:Nai-Wen Tseng、Mark Lautens
DOI:10.1021/jo900039g
日期:2009.3.20
A rhodium-catalyzed reaction of dienylboronate esters with alkenes is described. Strained bicyclic alkenes show the highest reactivity toward the rhodium-catalyzed addition of the dienylboronate esters. Depending on the substitution pattern of dienylboronate esters, an intramolecular 1,6- or 1,4-addition mechanism may be operative, affording carbocycles containing a vinylcyclopropane or cyclopentene moiety.