Synthesis of 1,2-Azaphosphacyclanes; Generality of the Mechanism of P=N Alkylation and Arbuzov Reaction.

A novel convenient "one-pot" synthesis of 2-oxo-1,2λ 5 -azaphosphacyclanes 1 and 1,2λ 4 -azaphosphacyclanium salts 2 via intramolecular N-alkylation of ω-halogenalkyl-substituted iminophosphoryl compounds 3 has been developed. The common nature of the reaction of intramolecular cyclization of iminophosphoryl compounds having an alkoxy group at the phosphorus atom and the Arbuzov reaction has been established. [ABSTRACT FROM AUTHOR]