Abstract:
The present invention relates to a process for preparing substituted 2-nitrobiphenyls and to specific 2-nitrobiphenyls. The invention further relates to a process for preparing 2-aminobiphenyls from such 2-nitrobiphenyls and to a process for preparing (het)arylamides of such 2-aminobiphenyls.
Abstract:
The present invention relates to a process for preparing substituted 2-nitrobiphenyls and to specific 2-nitrobiphenyls. The invention further relates to a process for preparing 2-aminobiphenyls from such 2-nitrobiphenyls and to a process for preparing (het)arylamides of such 2-aminobiphenyls.
Abstract:
La presente invención se relaciona a un proceso para la preparación de N-fenilhidroxilaminas sustituidas en el anillo por la reducción del compuesto de nitrobenceno sustituido correspondiente, en donde la reducción se lleva a cabo al hacer reaccionar el compuesto de nitrobenceno sustituido con hidrazina en presencia de un catalizador de rutenio.
Abstract:
The present invention relates to a novel process for the preparation of a compound of formula (I), wherein R, R, R, R and R are each independently selected from hydrogen, halogen, C-C-alkyl, C-C-haloalkyl, C-C-alkoxy, C-C-haloalkoxy, nitro, cyano, and pentafluorothio; R is C-C-alkyl, or C-C-haloalkyl; by oxidation of a compound of formula (II) with an oxidation agent selected from trifluoroperacetic acid and trichloroperacetic acid in the presence of a catalyst selected from hydroxides, oxides, sulfates, acetates or trifluoroacetates of lithium, magnesium, calcium, strontium, barium, titanium (IV), zinc (II) and manganese (II).