Control of the Stereoselectivity in the Synthesis of 1-Methyl-2,5-disubstituted Pyrrolidines by Mercury(II)-initiated Cyclization of Substituted Alk-4-enylamines
作者:Masao Tokuda、Yasufumi Yamada、Hiroshi Suginome
DOI:10.1246/cl.1988.1289
日期:1988.8.5
The stereoselectivity in the synthesis of cis- and trans-1-methyl-2,5-disubstituted pyrrolidines by mercury(II)-initiated cyclization of substituted alk-4-enylamines can be controlled by choosing the appropriate mercury salt and solvent.
可以通过选择合适的汞盐和溶剂来控制通过汞 (II) 引发的取代 alk-4-enylamines 环化合成顺式和反式 1-甲基-2,5-二取代吡咯烷的立体选择性。
Stereoselective cyclization of δ-alkenylamines catalyzed with butyllithium. Synthesis of cis-N-methyl-2,5-disubstituted pyrrolidines
Treatment of δ-alkenylamines (1a-1d) with a catalytic amount of butyllithium gave cis-N-methyl-2,5-disubstituted pyrrolidines (2a-2d) stereoselectively in good yields.