Generation of Acyl Radicals From 2-Naphthyl Thioesters
摘要:
A series of S-2-naphthyl thioesters were synthesized from the corresponding carboxylic acids or acid chlorides. Irradiation of these thioesters in the presence of a hydrogen source (i.e., 1,4-cyclohexadiene) generated the corresponding aldehydes. In this fashion, primary, secondary, tertiary, and aryl carboxylic acids were converted to the aldehydes in high yields. Intramolecular radical cyclization reactions support the hypothesis that the reaction proceeds via the formation of acyl radicals. The formation of aldehydes was not perturbed by possible Norrish Type II reactions.
Generation of Acyl Radicals From 2-Naphthyl Thioesters
作者:John H. Penn、Fang Liu
DOI:10.1021/jo00088a053
日期:1994.5
A series of S-2-naphthyl thioesters were synthesized from the corresponding carboxylic acids or acid chlorides. Irradiation of these thioesters in the presence of a hydrogen source (i.e., 1,4-cyclohexadiene) generated the corresponding aldehydes. In this fashion, primary, secondary, tertiary, and aryl carboxylic acids were converted to the aldehydes in high yields. Intramolecular radical cyclization reactions support the hypothesis that the reaction proceeds via the formation of acyl radicals. The formation of aldehydes was not perturbed by possible Norrish Type II reactions.
Penn John H., Liu Fang, J. Org. Chem, 59 (1994) N 9, S 2608-2612