A general stereocontrolled synthesis of cis-2,3 disubstituted pyrrolidines and piperidines
作者:Kollol Pal、Mark L. Behnke、Liang Tong
DOI:10.1016/s0040-4039(00)73710-5
日期:1993.9
A general synthetic method is reported for the preparation of cis-2,3-disubstituted pyrrolidines and piperidines from readily available acyclic precursors. The key reaction involves the stereoselective reduction of a cyclic imine controlled by the C-3 substituent.
Application of the thioimidate cyclopropane rearrangement to heterocyclic synthesis. Preparation of diaryl pyrrolines
作者:Ronald K. Chang、Robert M. DiPardo、Scott D. Kuduk
DOI:10.1016/j.tetlet.2005.10.009
日期:2005.12
Substituent effects on the thioimidate cyclopropane rearrangement and factors affecting regioselectivity are reported. Palladium-mediated coupling of the pyrrolothiomethylimidate rearrangement products with Grignard reagents provides diaryl pyrrolines in good yields.