Auxiliary controlled singlet-oxygen ene reactions of cyclohexenes
作者:Werner Fudickar、Katja Vorndran、Torsten Linker
DOI:10.1016/j.tet.2006.07.104
日期:2006.11
The photooxygenation of homochiral cyclohexene ketals, which are easily available from 2-cyclohexenone and l-tartrates, affords hydroperoxides and after reduction the corresponding allylic alcohols in good yields and high regioselectivities. This can be rationalized by electronic repulsions in a perepoxide intermediate and provides evidence for unfavorable 1,3 diaxial interactions with a dioxolane