An unusual reaction course in Rh(I)-induced decarbonylation of γ,δ-unsaturated aldehyde. Total synthesis of (±)-iso-β-necrodol and (±)-β-necrodol

Abstract

Decarbonylation of the γ,δ-unsaturated aldehydes (4 and 9), embodied in a sterically congested carbon network, with Wilkinson's catalyst followed a reaction course different from the normal decarbonylation or hydroacylation path. This investigation has led to the synthesis of iso-β-necrodol and the monoterpene β-necrodol