3-PHENYL SUBSTITUTED 3-SUBSTITUTED-4-KETOLACTAMS AND KETOLACTONES

摘要

3-Phenyl-2,4-dioxo-pyrrolidine or tetrahydrofuran derivatives (I) are new. 3-Phenyl-2,4-dioxo-pyrrolidine or tetrahydrofuran derivatives of formula (I) are new Q = oxygen or NH; W = alkyl; X = hydrogen, halo or alkyl; Y = halo or alkyl; A = alkyl, haloalkyl, alkoxyalkyl or optionally substituted cycloalkyl; B = hydrogen or alkyl or A and B complete a saturated ring, optionally substituted by alkyl or haloalkyl; and G = halo or nitro. with the proviso that at least one of X and Y is halo An Independent claim is also included for two methods for preparing (I).