Tetrahedron p. 4415 - 4430 (1989)
Update date:2022-07-29
Topics:
Tay, M.K.
About-Jaudet, E.
Collignon, N.
Savignac, P.
Lithiated anions (9) or (10) of secondary or tertiary α-amidophosphonates are prepared either by reaction between an α-phosphonyl carbanion and an isocyanate or a carbamate (first strategy), or by condensation of an amide enolate with diethylchlorophosphate (second strategy).Acidic hydrolysis of (9) or (10) gives α-amidophosphonate (1) alkylated or not in the α-position. (9) and (10) react with aromatic or aliphatic aldehydes to produce α,β-unsatured secondary or tertiary amides (2).
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