Photooxidative dehydrogenation of Δ8-drimen-and Δ8-11-homodrimen-7-ones into α,α ′-dienones.

Autor: P. Vlad, M. Coltsa, A. Aricu, A. Ciocarlan, E. Gorincioi, C. Edu, C. Deleanu
Zdroj: Russian Chemical Bulletin; Apr2006, Vol. 55 Issue 4, p703-707, 5p
Abstrakt: Abstract  An efficient two-step procedure for photooxidative dehydrogenation of drimane and 11-homodrimane compounds containing an 8-en-7-one structural unit into α,α′-dienones was elaborated. The method is based on the transformation of ketones into the respective enol acetates followed by photosensitized oxygenation. Methyl 7-oxo-11-homodrima-5,8-dien-12-oate, 5,6-dehydro-7-ketoisodrimenine, 11-acetoxydrima-5,8-dien-7-one and 11,12-diacetoxydrima-5,8-dien-7-one were prepared in high yields starting from methyl 7-oxo-11-homodrim-8-en-12-oate, 7-oxoisodrimenine, 11-hydroxydrim-8-en-7-one and 11,12-diacetoxydrim-8-en-7-one, respectively. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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