Epoxide Formation by Ring Closure of the Cinnamyloxy Radical

Autor: Jérôme Amaudrut, Olaf Wiest
Rok vydání: 2000
Předmět:
Zdroj: Organic Letters. 2:1251-1254
ISSN: 1523-7052
1523-7060
DOI: 10.1021/ol005749t
Popis: [formula: see text] The cinnamyloxy and oxiranyl benzyl radicals were generated by photolysis of alkyl 4-nitrobenzenesulfenates. The yet unprecedented epoxide ring formation from a primary alkoxy radical was observed. Experimental evidence supports the fact that the mode of ring opening of the oxiranyl carbinyl radical system is thermodynamically driven. B3LYP/6-31G* calculations indicate that the closed form of the radical is approximately 5 kcal/mol more stable than the open one.
Databáze: OpenAIRE