Abstract

Abstract Diethy (N-methoxy-N-methylcarbamoylmethyl)phosphonate ( 1 ) is easily prepared by heating 2-chloro-N-methoxy-N-methylethanamide and triethylphosphite. Reagent 1 is useful for converting aldehydes and ketones into compounds containing an α,β-unsaturated N-methoxy-N-methylamide group with high E selectivity.

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