EP 2209763 A2 20100728 - A PROCESS FOR THE PREPARATION OF 5-CHLORO-2(2,4-DICHLOROPHENOXY) ANILINE
Title (en)
A PROCESS FOR THE PREPARATION OF 5-CHLORO-2(2,4-DICHLOROPHENOXY) ANILINE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 5-CHLOR-2-(2,4-DICHLORPHENOXY)-ANILIN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE 5-CHLORO-2(2,4-DICHLOROPHÉNOXY) ANILINE
Publication
Application
Priority
- IN 2008000659 W 20081010
- IN 2029MU2007 A 20071012
Abstract (en)
[origin: WO2009090669A2] A novel process for the selective reduction of halonitroarenes in general and halonitroaromatic arenes in particular, without the hydrogenolysis of the C-Cl (where, X represents F-, Cl-, Br- and I) and the C-O-C bonds, in the presence of platinum based catalysts and ammonium formate. The invention makes the use of duel function of ammonium formate, as a hydrogen source for partial reduction (catalytic transfer hydrogenation) and as an additive controlling the hydrogenolysis side reactions during the completion of the reduction by high pressure catalytic hydrogenation using external hydrogen gas source. Uniqueness of the invention lies in the fact that either the catalytic transfer hydrogenation with ammonium formal e or high pressure catalytic hydrogenation in the absence of ammonium formate, when used alone result in lower purity of the said amine. This invention -product is used to synthesize intermediates for making antibacterial compounds.
IPC 8 full level
C07C 213/02 (2006.01); C07C 217/90 (2006.01)
CPC (source: EP)
C07C 213/02 (2013.01); C07C 217/90 (2013.01)
Citation (search report)
See references of WO 2009090669A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009090669 A2 20090723; WO 2009090669 A3 20090911; EP 2209763 A2 20100728
DOCDB simple family (application)
IN 2008000659 W 20081010; EP 08870546 A 20081010