公开(公告)号：ES2351400T3

公开(公告)日：2011-02-04

申请号：ES04798842

申请日：2004-11-09

Applicant: COUNCIL SCIENT IND RES

Inventor： BAVIKAR SUDHIR ,  MANER ASIF ,  ARUMUGAM SUDALAI ,  SWAMINATHAN SIVARAM ,  CHIDAMBARAM RAMESH

IPC: C07C231/12 ,  C07C209/36 ,  C07C209/50 ,  C07C211/50 ,  C07C211/52 ,  C07C233/43 ,  C07C237/32

Abstract: Un procedimiento para la producción de 3,3',4,4'-tetraaminobifenilo (TAB) de fórmula 1, a partir de 2-nitro-4-bromoacetanilida (NBA) de fórmula 2, dicho procedimiento que comprende las etapas de: (a) reacción de un compuesto de fórmula 2, con ácido nitroacetamidofenilborónico (NABP) de fórmula 3, en presencia de un catalizador, un disolvente y una base para obtener 3,3'dinitro-4,4'-diacetamidobifenilo (DNDAcB) de fórmula 4, (b) hidrólisis de dicho 3,3'-dinitro-4,4'-diacetamidobifenilo (DNDAcB) de fórmula 4 para obtener 3,3'-dinitro-4,4'-diaminobifenilo (DNDAB) de fórmula 5, y (c) reducción de dicho 3,3'-dinitro-4,4'-diaminobifenilo (DNDAB) de fórmula 5 para obtener 3,3',4,4'-tetraaminobifenilo (TAB) de fórmula 1.

公开(公告)号：DE602004029286D1

公开(公告)日：2010-11-04

申请号：DE602004029286

申请日：2004-11-09

Applicant: COUNCIL SCIENT IND RES

Inventor： BAVIKAR SUDHIR ,  MANER ASIF ,  CHIDAMBARAM RAMESH KUMAR ,  ARUMUGAM SUDALAI ,  SWAMINATHAN SIVARAM

IPC: C07C231/12 ,  C07C209/36 ,  C07C209/50 ,  C07C211/50 ,  C07C211/52 ,  C07C233/43 ,  C07C237/32

公开(公告)号：DE60327567D1

公开(公告)日：2009-06-18

申请号：DE60327567

申请日：2003-12-29

Applicant: COUNCIL SCIENT IND RES

Inventor： MANER ASIF ,  BAVIKAR SUDHIR ,  SUDALAI ARUMUGAM ,  SIVARAM SWAMINATHAN

IPC: C07C209/10 ,  C07C209/34 ,  C07C209/36 ,  C07C211/55 ,  C07C211/56

Abstract: The present invention relates to a process for the preparation of pure high quality 3,3', 4,4'-tetraminobiphenyl (TAB) in high yields. The present invention also discloses a process for the preparation of 3,3',4,4' tetraminobiphenyl (TAB) comprising a three step process: (1) oxidation 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) reduction of 3,3'-diamino-4,4'-dinitrobiphenyl (DADNB) with stannous chloride and concentrated hydrochloric acid.

公开(公告)号：AU2003290403A1

公开(公告)日：2005-07-21

申请号：AU2003290403

申请日：2003-12-29

Applicant: COUNCIL SCIENT IND RES

Inventor： BAVIKAR SUDHIR ,  SUDALAI ARUMUGAM ,  SIVARAM SWAMINATHAN ,  MANER ASIF

IPC: C07C209/36 ,  C07C211/55 ,  C07C209/10 ,  C07C211/56 ,  C07C209/34

Abstract: The present invention relates to a process for the preparation of pure high quality 3,3', 4,4'-tetraminobiphenyl (TAB) in high yields. The present invention also discloses a process for the preparation of 3,3',4,4' tetraminobiphenyl (TAB) comprising a three step process: (1) oxidation 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) reduction of 3,3'-diamino-4,4'-dinitrobiphenyl (DADNB) with stannous chloride and concentrated hydrochloric acid.