Tetrahedron Letters p. 77 - 80 (1992)
Update date:2022-09-26
Topics:
Genet, J. P.
Uziel, J.
Port, M.
Touzin, A. M.
Roland, S.
et al.
The preparation of diterbutyl-N (diphenylmethylene) aminomethylphosphonate 3 in four steps (42percent overall yield) from N-hydroxymethyl phthalimide 1 is described.Various α 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. Key words: Schiff bases of diterbutylaminomethylphosphonate; phase transfer catalysis; palladium-catalyzed allylic substitution; Michael additions.
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