A stereoselective route to multi-substituted tetrahydropyrans by vinyl radical cyclization
摘要:
The tin-mediated 6-exo-trig radical cyclization of the acetylenic beta-alkoxy acrylates proceeded smoothly to give fully substituted tetrahydropyrans in good yields with high equatorial selectivity irrespective of the stereochemistry of the propargylic position. (c) 2005 Elsevier Ltd. All rights reserved.
A stereoselective route to multi-substituted tetrahydropyrans by vinyl radical cyclization
摘要:
The tin-mediated 6-exo-trig radical cyclization of the acetylenic beta-alkoxy acrylates proceeded smoothly to give fully substituted tetrahydropyrans in good yields with high equatorial selectivity irrespective of the stereochemistry of the propargylic position. (c) 2005 Elsevier Ltd. All rights reserved.