REDUCTION D'ACETALS γ-BROMO α-ACETYLENIQUES PAR LES SELS CHROMEUX : ACCES AUX ACETALS ET ALDEHYDES α-ALLENIQUES.

Article abstract of DOI:10.1016/S0040-4039(00)98463-6

Reduction of γ-bromo α-acetylenic acetals 1 with chromous ions (THF + HMPA) in the presence of AcOH affords α-allenic acetals 2 whose careful hydrolysis yields the corresponding aldehydes 3.A new access to the dried bean beetle pheromone (racemic), via a