CONVENIENT PROCEDURES FOR CONVERSION OF CARBONYL COMPOUNDS TO <i>gem</i>-DIFLUOROOLEFINS AND THEIR SELECTIVE REDUCTIONS TO MONOFLUOROOLEFINS

Abstract

Abstract The in situ reaction of dibromodifluoromethane, triphenylphosphine, and aldehydes in the presence of zinc dust affords good yields of gem-difiuoroolefins. Reduction of the difluoroolefins gives selectively the corresponding monofluoro-olefins in excellent yields. The scope and limitation of these procedures are described and compared with those of previous methods.