Synthesis of Pyrrolidines by Anionic Cyclization onto Allylic Ethers, Alkynes and Carboxylic Groups
摘要:
alpha-Amino-methylstannanes with pendent allylic ether, alkyne or carboxylic groups, can be converted, on treatment with butyllithium, to 3-vinyl-, 3-methylene- or 3-keto-pyrrolidines by anionic cyclization. (C) 1997 Elsevier Science Ltd.
Synthesis of Pyrrolidines by Anionic Cyclization onto Allylic Ethers, Alkynes and Carboxylic Groups
作者:Iain Coldham、Maria M.S. Lang-Anderson、Richard E. Rathmell、David J. Snowden
DOI:10.1016/s0040-4039(97)01809-1
日期:1997.10
alpha-Amino-methylstannanes with pendent allylic ether, alkyne or carboxylic groups, can be converted, on treatment with butyllithium, to 3-vinyl-, 3-methylene- or 3-keto-pyrrolidines by anionic cyclization. (C) 1997 Elsevier Science Ltd.
Intramolecular carbolithiation reactions for the preparation of 3-alkenylpyrrolidines
作者:Iain Coldham、Kathy N. Price、Richard E. Rathmell
DOI:10.1039/b303670g
日期:——
Tin–lithium exchange allows the formation of α-amino-organolithium species that undergo anionic cyclization onto allylic ethers to give 3-alkenylpyrrolidines. The methodology has been applied to the synthesis of an advanced intermediate related to the natural product (–)-α-kainic acid.