Radical-Based Synthesis of Terpenoids. Stereoselectivity in the Trapping of Radicals from Cyclization of 3-(1-Ethoxy-2-haloethoxy)cyclohexenes

Autor: Noriko Hazeki, Tsuneo Hirano, K. Yamada, Hajime Nagano, Yukie Mori
Rok vydání: 1992
Předmět:
Zdroj: Bulletin of the Chemical Society of Japan. 65:2421-2426
ISSN: 1348-0634
0009-2673
DOI: 10.1246/bcsj.65.2421
Popis: Stereoselectivity in the intermolecular trapping of the bicyclic radical intermediates from cyclization of 3-(1-ethoxy-2-haloethoxy)cyclohexenes with methyl acrylate was found to be affected remarkably by the conformation of the radical intermediates. The optimized conformers of 8-methoxy-7-oxabicyclo[4.3.0]non-2-yl radicals, models for the radical intermediates, were obtained by PM3 RHF molecular orbital calculations, and the stereoselectivity was analyzed in detail.
Databáze: OpenAIRE