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Machine translation
1. (WO2005063679) PROCESS FOR THE PREPARATION OF HIGH QUALITY 3,3',4,4'-TETRAMINOBIPHENYL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/063679    International Application No.:    PCT/IN2003/000403
Publication Date: 14.07.2005 International Filing Date: 29.12.2003
Chapter 2 Demand Filed:    28.07.2005    
IPC:
C07C 209/36 (2006.01), C07C 211/55 (2006.01)
Applicants: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH [IN/IN]; INSDOC Building, 14, Satsang Vihar Marg, 110 067 New Delhi (IN) (For All Designated States Except US).
MANER, Asif [IN/IN]; (IN) (For US Only).
BAVIKAR, Sudhir [IN/IN]; (IN) (For US Only).
SUDALAI, Arumugam [IN/IN]; (IN) (For US Only).
SIVARAM, Swaminathan [IN/IN]; (IN) (For US Only)
Inventors: MANER, Asif; (IN).
BAVIKAR, Sudhir; (IN).
SUDALAI, Arumugam; (IN).
SIVARAM, Swaminathan; (IN)
Agent: BHOLA, Ravi; K & S Partners, 84-C, C-6 Lane, Off Central Avenue, Sainik Farms, 110 062 New Delhi (IN)
Priority Data:
Title (EN) PROCESS FOR THE PREPARATION OF HIGH QUALITY 3,3',4,4'-TETRAMINOBIPHENYL
(FR) PROCEDE DE PRODUCTION DE 3,3',4,4'-TETRAMINOBIPHENYLE DE HAUTE QUALITE
Abstract: front page image
(EN)Present application relates to a process for the preparation of pure high quality 3,3¢, 4,4¢-tetraminobiphenyl (TAB) in high yields.More particularly, it relates to a process for preparation of 3,3¢, 4,4¢ tetraminobiphenyl (TAB) involving a three step process (1) oxidation of 3,3¢,-dichloro 4,4'-diaminobiphenyl (DCB) with 50% aq. H2O2, (2) ammonolysis of the resulting 3,3'-dinitro 4,4'-dinitrobiphenyl (DCDNB) and (3) the reduction of 3,3'-diamino-4,4'-dinitrobiphenyl (DADNB)with stannous chloride and concentrated hydrochloric acid.
(FR)L'invention porte sur un procédé de production à fort rendement de 3,3¢, 4,4¢-tétraminobiphényle (TAB) pur de haute qualité, et plus particulièrement sur un tel procédé comportant les étapes suivantes: (1) oxydation de 3,3¢,-dichloro 4,4'-diaminobiphényle (DCB) avec 50 % aq. H2O2; (2) ammonolyse du 3,3'-dinitro 4,4'-dinitrobiphényle (DCDNB) résultant; et (3) réduction du 3,3'-diamino-4,4'-dinitrobiphényle (DADNB) par du chlorure stanneux et de l'acide hydrochlorique concentré.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, 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, HU, IE, IT, LU, MC, NL, 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)