The Journal of Organic Chemistry

Organophosphorus enamines. VIII. Convenient preparation of diethyl. beta.-ketophosphonates

MS Chattha, AM Aguiar

Index: Chattha,M.S.; Aguiar,A.M. Journal of Organic Chemistry, 1973 , vol. 38, # 16 p. 2908 - 2909

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Citation Number: 16

Abstract

Recently we described the nucleophilic addition of aliphatic amines to the carbon-carbon triple bond in diethyl l-alkynylphosphonates 1, 2 giving enamine phosphonates 2 in fair to good yield^.^ Now we wish to report that an acid hydrolysis of 2 produces p- ketophosphonates 3 in cxcellent yields (eq 1). Compounds

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