The present invention relates to a novel process for the preparation of N-Chloro bis benzene sulfonamide/N-Chloro substituted bis benzene sulfonamide of formula I or intermediates or polymorphs or salts thereof,
Wherein,
R1and R2 represents H, alkyl, alkenyl, alkynyl, cyclic alkyl haloalkyl, halogen, nitro, hyd...
ABSTRACT:
PROCESS FOR THE PREPARATION OF N-OXIDE OF HETEROCYCLES
The present invention relates to an improved, safe and scalable process for the preparation of N-oxides of heterocycles of general formula (I) and (II) using m-CPBA-NH3(g) system,
Wherein,
R1 represents H, alkyl, hydroxy, nitro, C6H5CH2, O2NC6H4...