Sustainable chemical process for reduction of nitro compounds (R-NO2) or nitroso compounds (R-NO) containing sulphonic or carboxylic group into corresponding amino compounds (R-NH2) with inherent recycle of all acidic streams generated in synthesis
申请人:Padia Bhadresh K.
公开号:US20120203031A1
公开(公告)日:2012-08-09
The process of the present invention creates a sustainable and closed water loop allowing inherent recycles of all liquid streams generated in the process. The liquid streams generated during the process of the invention are inherently recycled completely, making the process of the present invention a zero liquid discharge process which is environmentally friendly and sustainable. This invention further relates to a sustainable chemical process of reduction of R—NO
2
or R—NO into corresponding R—NH
2
that produces environmentally friendly R—NH
2
in good yields and selectivity with large of mother liquor recycle. The process has a wide scope in that it can be applied to a number of molecules.
[EN] SUSTAINABLE CHEMICAL PROCESS FOR REDUCTION OF NITRO COMPOUNDS (R-NO2) OR NITROSO COMPOUNDS (R-NO) CONTAINING SULPHONIC OR CARBOXYLIC GROUP INTO CORRESPONDING AMINO COMPOUNDS (R-NH2) WITH INHERENT RECYCLE OF ALL ACIDIC STREAMS GENERATED IN SYNTHESIS<br/>[FR] PROCÉDÉ CHIMIQUE ÉCOLOGIQUE POUR LA RÉDUCTION DE COMPOSÉS NITRO (R-NO2) OU DE COMPOSÉS NITROSO (R-NO) CONTENANT UN GROUPE SULFONIQUE OU CARBOXYLIQUE EN COMPOSÉS AMINO CORRESPONDANTS (R-NH2) AVEC UN RECYCLAGE INHÉRENT DE TOUS LES COURANTS ACIDES PRODU
申请人:PADIA BHADRESH K
公开号:WO2011048535A1
公开(公告)日:2011-04-28
The process of the present invention creates a sustainable and closed water loop allowing inherent recycles of all liquid streams generated in the process. The liquid streams generated during the process of the invention are inherently recycled completely, making the process of the present invention a zero liquid discharge process which is environmentally friendly and sustainable. This invention further relates to a sustainable chemical process of reduction of R- NO2 or R-NO into corresponding R-NH2 that produces environmentally friendly R-NH2 in good yields and selectivity with large of mother liquor recycle. The process has a wide scope in that it can be applied to a number of molecules.
detected as main product, suggesting that a competitive reaction would probably take place. The results clearly confirmed the dienophilic nature of nitronaphthalenic doublebonds and provided an alternative procedure for phenanthrene derivatives and N-naphthylpyrroles' synthesis. The relative reactivity of the reactants and the viability of the reactions were discussed from a theoretical point of view.
Herein we report a novel palladium-catalyzed reaction that results in phenanthrene derivatives using aryl iodides, ortho-bromobenzoyl chlorides and norbornadiene in onepot. This dramatic transformation undergoes ortho-C–H activation, decarbonylation and subsequent a retro-Diels–Alder process. Pleasantly, this protocol has a wider substrate range, shorter reaction times and higher yields of products