The present invention provides a novel process for preparation N-[(2,3,4,5,6- Pentafluorophenoxy)phenoxyphosphinyl]-L-alanine 1-methylethyl ester (formula 2) and resolving the formula 2 in the presence base to form N-[(S)-(2,3,4,5,6- Pentafluorophenoxy)phenoxyphosphinyl]-L-alanine 1-methylethyl ester (formula 2').
本发明提供了一种新颖的制备N-[(2,3,4,5,6-
五氟苯氧基)苯氧基
磷酰基]-
L-丙氨酸1-甲基
乙酯(式2)并在碱存在下将式2分解形成N-[(S)-(2,3,4,5,6-
五氟苯氧基)苯氧基
磷酰基]-
L-丙氨酸1-甲基
乙酯(式2')的新工艺。