New synthesis of diphenyl-N-(substituted) ketenimines from diaminophosphonium diazaylides
HJ Cristau, I Jouanin, M Taillefer
Index: Cristau, Henri-Jean; Jouanin, Isabelle; Taillefer, Marc Journal of Organometallic Chemistry, 1999 , vol. 584, # 1 p. 68 - 72
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Citation Number: 13
Abstract
Diaminophosphonium diazaylides 2 react under mild conditions with diphenylacetyl chloride, to afford diphenyl-N-(substituted) ketenimines 4 or, depending on the case, their transformation products: either the tautomer 8, or the dimer 9. The general reaction seems to proceed firstly via an elimination step on the acid chloride followed then by an aza-Wittig reaction between the resulting ketene 7 and the diaminophosphonium monoazaylide 6.
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[Stevens; French Journal of the American Chemical Society, 1954 , vol. 76, p. 4398,4400]