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Preparation of phosphinic acids: Michael additions of phosphonous acids/esters to conjugated systems.

✍ Scribed by John K. Thottathil; Denis E. Ryono; Claire A. Przybyla; Jerome L. Moniot; Richard Neubeck

Publisher
Elsevier Science
Year
1984
Tongue
French
Weight
200 KB
Volume
25
Category
Article
ISSN
0040-4039

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✦ Synopsis

A very mild and facile method for the preparation of phosphinic acids via Michael addition of phosphonous acids as well as esters, through an intermediate silyl alkyl phosphonite, to activated conjugated systems is described.

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A stereoselective michael addition of Ξ±-
A stereoselective michael addition of Ξ±-lithiated phosphonates to Ξ±,Ξ²-unsaturated esters
✍ Masahiko Yamaguchi; Yukiharu Tsukamoto; Akio Hayashi; Toru Minami πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 French βš– 123 KB

a-Lithiated phosphonates added to a&unsaturated t-butyl esters in 1,Gmanner giving anti-3,4-disubstituted-4-phosphorylbutanoates in high yields. /~~%~ylam%omethyl)phosphonates were prepared from dialkyl phosphite, dibenzylamine, and formaldehyde: See; R. Tyka, Tetrahedron Lett., 1970, 677.