[EN] THE METHOD FOR PRODUCTION OF SEMI-FINISHED PRODUCTS USEFUL IN SYNTHESIS OF PACLITAXEL [FR] PROCEDE DE PRODUCTION DE PRODUITS SEMI-FINIS UTILES DANS LA SYNTHESE DU PACLITAXEL
POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE CATALYST, POLYTHIOURETHANE RESIN OBTAINED FROM THE COMPOSITION, AND METHOD FOR PRODUCING THE RESIN
申请人:Mitsui Chemicals, Inc.
公开号:EP2065414A1
公开(公告)日:2009-06-03
By using an amine hydrochloride represented by the formula (1) as a catalyst, a polythiourethane resin which is suitably used for a transparent resin for optical use, can be obtained without using an organotin compound which has been conventionally used as a catalyst for polythiourethane resins and without being affected by the acidity of an additive:
wherein R1, R2 and R3 independently represent a monovalent or higher valent linear aliphatic, branched aliphatic, cyclic aliphatic or aromatic organic residue which may have a hydroxyl group or an amino group; and R1, R2 and R3 may be arbitrarily bonded to each other to form a ring.
POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE SAME, POLYTHIOURETHANE RESIN OBTAINED FROM THE COMPOSITION, AND PROCESS FOR PRODUCING THE RESIN
申请人:Kawato Nobuo
公开号:US20100029890A1
公开(公告)日:2010-02-04
By using an amine hydrochloride represented by the formula (1) as a catalyst, a polythiourethane resin which is suitably used for a transparent resin for optical use, can be obtained without using an organotin compound which has been conventionally used as a catalyst for polythiourethane resins and without being affected by the acidity of an additive:
wherein R
1
, R
2
and R
3
independently represent a monovalent or higher valent linear aliphatic, branched aliphatic, cyclic aliphatic or aromatic organic residue which may have a hydroxyl group or an amino group; and R
1
, R
2
and R
3
may be arbitrarily bonded to each other to form a ring.
US8586695B2
申请人:——
公开号:US8586695B2
公开(公告)日:2013-11-19
[EN] THE METHOD FOR PRODUCTION OF SEMI-FINISHED PRODUCTS USEFUL IN SYNTHESIS OF PACLITAXEL<br/>[FR] PROCEDE DE PRODUCTION DE PRODUITS SEMI-FINIS UTILES DANS LA SYNTHESE DU PACLITAXEL
申请人:AGROPHARM S A
公开号:WO2004056790A1
公开(公告)日:2004-07-08
The method for production of the semi-finished products useful in synthesis of Paclitaxel with the generalized formula (2), characterized in that phenyl isoserine derivatives, or mixtures of their epimerides with various configurations on the carbon 2' or their salts, are treated with triazine type condensing agent, possible in the presence of tertiary amine, in medium of anhydrous organic solvent, and the triazine esters produced are treated with Baccatin III, in medium of anhydrous organic solvent, possible in the presence of a catalyst.