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.