ABSTRACT
New 1,2-alkadienylphosphonates and diphenyl(1,2-alkadien-1-yl)phosphine oxides were synthesized by a convenient and efficient method. These compounds are useful as intermediates in the preparation of 2-(diethylphosphoryl)-3-(3-phenyl-4,5-dihydroisoxazol-5-yl)-2H-azirines, 2-(diethylphosphoryl)-3-vinyl-2H-azirines and diphenyl(3-isopropenyl-2H-azirin-2-yl)phosphine oxides.