Abstract
Aiming to obtain the similar unsubstituted hydrazone analog of the same phosphonium salt we studied the reaction of salt I with an aqueous hydrazine in the presence of sodium carbonate in chloroform at 30°C. Unexpectedly, propyldiphenylphosphine oxide II was obtained in 50% yield as the reaction product along with the doubly N-alkylated adduct. Probably the formation of II occurs through an intermediate diphenyl-2-methyl-2hydrazinoethylphosphine oxide III. The latter undergoes successive dehydrogenation and denitrogenation as follows: DOI: 10.1134/S107036321301026X
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