Stannylcupration of chiral γ-amino acetylenic esters: Stereocontrolled synthesis of 3-tributylstannyl γ-amino (E)-alkenoates a as precursors of 4-stannylated pyrrolinones
作者:Gianna Reginato、Alessandro Mordini、Alessandro Degl'Innocenti、Sonia Manganiello、Antonella Capperucci、Giovanni Poli
DOI:10.1016/s0040-4020(98)00624-3
日期:1998.8
4-Tributylstannyl-5-substituted-pylrolin-2-ones are prepared through the addition of tributylstannyl cyano cuprate to enantiomerically enriched N-protected gamma-amino acetylenic esters. The regio- and stereoselectivity of the addition is discussed as a function of the substrates and of the reaction conditions. Cyclization of the (E)-isomers to the corresponding 4-stannylated pyrrolin-2-ones is reported, (C) 1998 Elsevier Science Ltd. All rights reserved.