Tetrahedron letters

A practical synthesis of α-aminophosphonic acids.

JP Genet, J Uziel, M Port, AM Touzin, S Roland…

Index: Genet, J. P.; Uziel, J.; Port, M.; Touzin, A. M.; Roland, S.; et al. Tetrahedron Letters, 1992 , vol. 33, # 1 p. 77 - 80

Full Text: HTML

Citation Number: 66

Abstract

Abstract The preparation of diterbutyl-N (diphenylmethylene) aminomethylphosphonate 3 in four steps (42% overall yield) from N-hydroxymethyl phtalimide 1 is described. Various ot substituted α-aminophosphonic acids 5 containing functionalized unsaturated chains have been synthesized by alkylation of 3 under phase transfer catalysis with halides, Michael acceptors and palladium promoted reactions, followed by mild hydrolysis.