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 |
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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 |
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