Intramolecular Diels–Alder reactions of 1-phenylsulfonylalka-1,2,(ω − 3),(ω − 1)-tetraenes
作者:James R. Bull、Richard Gordon、Roger Hunter
DOI:10.1039/b005146m
日期:——
Methods are described for conversion of a series of (E)-alka-(ω − 3),(ω − 1)-dienals 2, via ethynylation to the corresponding alkadienynols 3, followed by sequential [2,3] sigmatropicrearrangement of their derived phenylsulfenate esters and chemoselective oxidation, into 1-phenylsulfonylalka-1,2,(ω − 3),(ω − 1)-tetraenes 5, which are used to study the influence of tether length and peripheral substitution