Carbometalation of cyclopropenes. Stereoselective synthesis of divinyl ketone acetals by 1,5-hydrogen migration of vinylcyclopropanes
摘要:
Stereoselective vinylcupration of a cyclopropenone acetal (1), followed by in situ electrophilic trapping with an alkylating agent, affords a cis-substituted vinylcyclopropane 2, which stereoselectively rearranges to the acetal of a cross-conjugate dienone 3 upon thermolysis at 60-160-degrees-C.
Carbometalation of cyclopropenes. Stereoselective synthesis of divinyl ketone acetals by 1,5-hydrogen migration of vinylcyclopropanes
摘要:
Stereoselective vinylcupration of a cyclopropenone acetal (1), followed by in situ electrophilic trapping with an alkylating agent, affords a cis-substituted vinylcyclopropane 2, which stereoselectively rearranges to the acetal of a cross-conjugate dienone 3 upon thermolysis at 60-160-degrees-C.
Carbometalation of cyclopropenes. Stereoselective synthesis of divinyl ketone acetals by 1,5-hydrogen migration of vinylcyclopropanes
作者:Eiichi Nakamura、Katsumi Kubota、Masahiko Isaka
DOI:10.1021/jo00048a004
日期:1992.10
Stereoselective vinylcupration of a cyclopropenone acetal (1), followed by in situ electrophilic trapping with an alkylating agent, affords a cis-substituted vinylcyclopropane 2, which stereoselectively rearranges to the acetal of a cross-conjugate dienone 3 upon thermolysis at 60-160-degrees-C.