申请人:Sumitomo Chemical Company, Limited
公开号:US04709049A1
公开(公告)日:1987-11-24
3-Amino-4-fluoro-6-halophenylthioacetic acids of the formula: ##STR1## and 5-substituted acetanilides of the formula: ##STR2## , which are intermediary compounds for the synthesis of herbicidally effective 2-substituted phenyl-4,5,6,7-tetrahydro-2H-isoindole-1,3-diones of the formula: ##STR3## through the corresponding acid of the formula: ##STR4## (wherein X is a chlorine atom or a bromine atom, R is a C.sub.1 -C.sub.6 alkyl group, a C.sub.3 -C.sub.7 cycloalkyl group, a C.sub.3 -C.sub.6 alkenyl group, a C.sub.3 -C.sub.6 alkynyl group, a C.sub.2 -C.sub.6 haloalkyl group, a C.sub.1 -C.sub.4 alkoxy(C.sub.1 -C.sub.4)alkyl group, a C.sub.1 -C.sub.6 alkoxycarbonyl(C.sub.1 -C.sub.3)alkyl group or a phenyl group and Z is --NO.sub.2, --NH.sub.2, --SCH.sub.2 COOH, --SO.sub.2 Cl, --SO.sub.3 H or --SH).
公式:3-氨基-4-氟-6-卤代苯硫乙酸(如下式)和5-取代苯乙酰胺(如下式),是合成除草有效的2-取代苯基-4,5,6,7-四氢-2H-异吲哚-1,3-二酮(如下式)的中间体化合物,其可通过相应的酸(如下式)合成(其中X为氯原子或溴原子,R为C1-C6烷基、C3-C7环烷基、C3-C6烯基、C3-C6炔基、C2-C6卤代烷基、C1-C4烷氧基(C1-C4)烷基、C1-C6烷氧羰基(C1-C3)烷基或苯基,Z为--NO2、--NH2、--SCH2COOH、--SO2Cl、--SO3H或--SH)。