公开(公告)号：BR112012021345A2

公开(公告)日：2021-07-06

申请号：BR112012021345

申请日：2011-02-25

Applicant: COUNCIL SCIENT IND RES

Inventor： BHASKAR BHAIRAVNATH IDAGE ,  SUSHEELA BHASKAR IDAGE ,  SIVARAM SWAMINATHAN

IPC: C07D319/12

Abstract: processo aperfeiçoado para a preparação de l-lactídeo de alto rendimento químico e de ótima pureza. a presente invenção refere-se a um processo para a síntese de lactídeo l(+) 100% opticamente puro, catalisado por cristais de metal de zinco e estanho de monos de 150 microns de tamanho de partícula, é descrito. o lactídeo l-obtido foi ainda purificado para obter lactídeo de 100% de pureza óptica e impurezas de ácido menos do que 10 meq/kg.

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：DE69735160D1

公开(公告)日：2006-04-13

申请号：DE69735160

申请日：1997-05-14

Applicant: COUNCIL SCIENT IND RES

Inventor： SENSARMA SOUMEN ,  SIVARAM SWAMINATHAN

IPC: C08F4/654

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.

公开(公告)号：DE69731938D1

公开(公告)日：2005-01-20

申请号：DE69731938

申请日：1997-05-14

Applicant: COUNCIL SCIENT IND RES

Inventor： SENSARMA SOUMEN ,  SIVARAM SWAMINATHAN

IPC: C08F4/654

公开(公告)号：DE69823186D1

公开(公告)日：2004-05-19

申请号：DE69823186

申请日：1998-08-28

Applicant: COUNCIL SCIENT IND RES

Inventor： RAMANTHAN LALGUDI SRINIVASAN ,  SIVARAM SWAMINATHAN

IPC: C08F8/14 ,  C08G18/62

公开(公告)号：IN186155B

公开(公告)日：2001-06-30

申请号：IN861DE1993

申请日：1993-08-10

Applicant: COUNCIL SCIENT IND RES

Inventor： SHAIKH ABBAS-ALLI GHUDUBHAI ,  SIVARAM SWAMINATHAN

IPC: C08G63/64

公开(公告)号：IN185387B

公开(公告)日：2001-01-13

申请号：IN2737DE1996

申请日：1996-12-10

Applicant: COUNCIL SCIENT IND RES

Inventor： SHUKLA PARSHURAM GAJANAN ,  SIVARAM SWAMINATHAN ,  RAJAGOPALAN NATARAJAN

IPC: C08G18/00

公开(公告)号：IN185094B

公开(公告)日：2000-11-11

申请号：IN1236DE1991

申请日：1991-12-16

Applicant: COUNCIL SCIENT IND RES

Inventor： SIVARAM SWAMINATHAN ,  MEHRA JAGDISH CHANDRA ,  IYER VENKAT SRINIVASAN ,  RAVINDRANATH ROYALAGUNTA

IPC: C08F12/00 ,  C08F120/00