PROCESO PARA PRODUCIR L-GLUFOSINATO DE DIOL O UN DERIVADO DE DIOL

Claims

A process for the preparation of L-glufosinate, wherein the process comprises the following steps: a) reacting a compound according to formula (1) wherein R1 is hydrogen, (C1-C12)-alkyl, (C1-C12)-haloalkyl, (C6-C10)-aryl, (C6-C10)-haloaryl, (C7-C10)-aralkyl, (C7-C10)-haloaralkyl, (C4-C10)-cycloalkyl, or (C4-C10)-halocycloalkyl, with a compound according to formula (2) wherein R2 and R3 are independently of each other (C1-C8)-acyloxy, (C1-C8)-alkoxy or hydroxy or R2 and R3 are independently of each other an epoxide group or an ethylene carbamate group, and optionally a subsequent acid treatment to form a diol according to formula (3), b) oxidize the diol according to formula (3) to form 2-oxo-4-(hydroxy(methyl)phosphinoyl)butyric acid (PPO); and c) amine the PPO to L-glufosinate.