Syntheses and oxidative transformations of 6-(1-methylethylidene)-3,3a,6,6a-tetrahydro-2H-cyclopenta[b]furan-2-one and its precursors
摘要:
Proceeding from the [2+2]-adduct of dichloroketene and dimethylfulvene a synthesis was developed of 6-(1-methylethylidene)-3,3a,6,6a-tetrahydro-2H-cyclopenta[b]furan-2-one, and further transformations of the latter were carried out aiming at the oxidative cleavage of the isopropylidene double bond and preparation of the corresponding cyclopentenone blocks.