Patent ID: 6057452
Filing Date: 2000-05-02
Classification: C07B,C07C,C07D,C07F,C08L,C12P

Abstract:
An oxazolidine ester of formula (III) where X.sub.1 is:(1) C.sub.1 -C.sub.8 alkyl,(2) C.sub.5 -C.sub.7 cycloalkyl,(3) --CH.sub.2 --.phi. where the .phi. is optionally substituted with 1 or 2(a) --O--X.sub.1-1 where X.sub.1-1 is C.sub.1 -C.sub.3 alkyl,(b) --F, --Cl,--Br, --I;where X.sub.2 is:(1) --H,(2) --.phi. optionally substituted with 1 or 2(a) --O--X.sub.2-1 where X.sub.2-1 is C.sub.1 -C.sub.3 alkyl,(b) --F, --Cl,--Br, --I;where X.sub.3 is --SO.sub.2 --X.sub.3-1 where X.sub.3-1 is:(1) 4-nitrophenyl,(2) 2,4-dinitrophenyl.