Processes for preparing D,L-2-amino-4((hydroxy)(methyl)phosphinoyl)-butyric acid and an acetal of an ester of 3-oxopropylmethyl phosphinic acid
申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0009022A1
公开(公告)日:1980-03-19
A process for the production of D,L-2-amino-4-methylsulphosphino-butyric acid having both herbicidic and fungicidic activities, in which dialkylmethylphosphonite is reacted with acrolein to synthesize an acetal of 3-oxopropylmethylphosphinic acid ester, the compound is subjected to deacetalization to obtain 3-oxopropylmethylphosphinic acid ester and then Strecker reaction for the synthesis of an amino acid is effected.