Manufacturing method of new herbicidal substances (新規除草性物質)

摘要

The title compd. [MeP(O) (O-) (CH2)2CH(N+H3) CO2- Me3N+ (C-H2) 2OH was prepd. from choline and choline salts by treatment with aq. MeP(O) (OM1/n) (CH2)2CH(NH2)CO2H (II; M=H, metal atom; n=valency of M). 2-Amino-4-methyl-phosphinoyl butanoic acid choline (AMPB);I) controlled annual and perennial weeds, shrubs, and aquatic plants more effectively than II. Compns. contg. I are described.