Preparation of a-methoxyiminocarboxylic acid methylamides and intermediates therefore

摘要

A process and intermediates for preparing alpha -methoxyiminocarboxylic acid methylamides (I) by Pinner reaction of a cyanoketone (II) with an alcohol and subsequent reaction of the resulting ester (IV) with hydroxylamine to give the oxime (V), methylation of (V) to give the oxime ether (VI) and subsequent reaction of (VI) with methylamine: <IMAGE> <IMAGE> +TR <IMAGE> X = nitro, trifluoromethyl, halogen, alkyl or alkoxy; n = 0, 1, 2, 3 or 4; Y = a C-organic radical.