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1. (WO2009060050) SINGLE-STEP CATALYTIC PREPARATION OF PARA-AMINOPHENOL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/060050    International Application No.:    PCT/EP2008/065100
Publication Date: 14.05.2009 International Filing Date: 07.11.2008
IPC:
B01J 23/40 (2006.01), B01J 27/053 (2006.01), B01J 35/00 (2006.01), C01G 25/06 (2006.01), C07C 213/00 (2006.01), C07C 215/76 (2006.01)
Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S) [FR/FR]; 3, rue Michel Ange F-75016 Paris (FR) (For All Designated States Except US).
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH [IN/IN]; 2, Rafi Marg, New Delhi 110001 (IN) (For All Designated States Except US).
VINATI ORGANICS LTD (V.O.L) [IN/IN]; B-12 & B-13/1 M.I.D.C. Industrial Area District Raigad, Mahad 402309 (IN) (For All Designated States Except US).
FIGUERAS, François [FR/FR]; (FR) (For US Only).
DESHPANDE, Abhay [IN/FR]; (FR) (For US Only).
MANNEPALLI, Lakshmi Kantam [IN/IN]; (IN) (For US Only).
KATURI, Jeeva Ratnam [IN/IN]; (IN) (For US Only).
RAGIREDDY, Sudarshan Reddy [IN/IN]; (IN) (For US Only).
NUJILLA, Subrahmanya Sekhar [IN/IN]; (IN) (For US Only)
Inventors: FIGUERAS, François; (FR).
DESHPANDE, Abhay; (FR).
MANNEPALLI, Lakshmi Kantam; (IN).
KATURI, Jeeva Ratnam; (IN).
RAGIREDDY, Sudarshan Reddy; (IN).
NUJILLA, Subrahmanya Sekhar; (IN)
Agent: BLOT, Philippe; Cabinet Lavoix 2, Place d'Estienne d'Orves F-75441 Paris Cedex 09 (FR)
Priority Data:
07291339.5 07.11.2007 EP
Title (EN) SINGLE-STEP CATALYTIC PREPARATION OF PARA-AMINOPHENOL
(FR) PRÉPARATION CATALYTIQUE EN UNE SEULE ÉTAPE DE PARA-AMINOPHÉNOL
Abstract: front page image
(EN)The present invention relates to the use of a bi-functional catalyst for the one-step preparation of para-am inophenol, said catalyst comprising a mixture of a hydrogenation noble metal and a zirconium sulfate. The present invention also relates to an improved single-step process for the preparation of para- aminophenol from nitrobenzene, in an aqueous medium, using said bi-functional catalyst.
(FR)La présente invention porte sur l'utilisation d'un catalyseur bifonctionnel pour la préparation en une étape de para-aminophénol. Ce catalyseur comprend un mélange d'un métal noble d'hydrogénation et d'un sulfate de zirconium. La présente invention porte également sur un procédé perfectionné en une seule étape pour la préparation de para-aminophénol à partir du nitrobenzène, dans un milieu aqueux, à l'aide dudit catalyseur bifonctionnel.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)