139475-33-5Relevant academic research and scientific papers
REACTIONS OF ETHOXYETHYNYLPHOSPHINES WITH PHENYL AZIDE AND NUCLEOPHILES.1,5-ALKYLOTROPIC MIGRATION IN PHOSPHORUS(IV)-SUBSTITUTED KETENE ACETALS
Lukashev, N. V.,Zhichkin, P. E.,Fil'chikov, A. A.,Kazankova, M. A.,Luzikov, Yu. N.,Beletskaya, I. P.
, p. 2486 - 2491 (1991)
Ethoxyethynyl-di-tert-butylphosphine reacts with phenyl azide in the presence of amines, alcohols, phenol, or water by addition of the nucleophile to the triple bond of the unstable ethoxyethynyldi-tert-butyl-N-phenyliminophosphorane.It has been found that iminophosphorylated ketene acetals are usually unstable, undergoing 1,5-alkylotropic migration to give alkoxycarbonylmethylene(alkylphenylamino)phosphoranes.
