Process for the preparation of L-phosphinothricin and its deriva

Details Process for the preparation of L-phosphinothricin and its deriva Process for the preparation of L-phosphinothricin and its deriva

1994-07-25

1995-05-30

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558169, 558170, 558172, 562 11, 562 15, C07F 930, C07F 932

Patent

active

054203295

ABSTRACT:
The invention relates to a process for the enantioselective preparation of L-phosphinothricin (L-Ptc) and derivatives of the formula I ##STR1## in which R.sup.1 is H, (C.sub.1 -C.sub.6)-alkyl, (C.sub.1 -C.sub.4)-haloalkyl, (C.sub.3 -C.sub.6)-cycloalkyl or (subst.) phenyl-(C.sub.1 -C.sub.4)-alkyl, R.sup.2 is hydrogen, formyl, [(C.sub.1 -C.sub.6)alkyl]carbonyl, [(C.sub.1 -C.sub.6)alkoxy]carbonyl, (subst.) benzyloxycarbonyl, (C.sub.1 -C.sub.6)-alkylsulfonyl or (subst.) (C.sub.6 -C.sub.10)-arylsulfonyl, and R.sup.3 is OH, NH.sub.2 or (C.sub.1 -C.sub.6)-alkoxy, or their salts with acids or bases.

REFERENCES:
patent: 4168963 (1979-09-01), Rupp et al.
patent: 4265654 (1981-05-01), Takematsu et al.
patent: 4499027 (1985-02-01), Minowa et al.
patent: 4777279 (1988-10-01), Zeiss
Sci. Reports of Meiji Seika Kaisha No. 20, pp. 33-38 (1981).

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