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Machine translation
1. (WO1998014421) METHOD FOR ESTERIFYING CARBOXYLIC COMPOUNDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/014421    International Application No.:    PCT/JP1997/003508
Publication Date: 09.04.1998 International Filing Date: 01.10.1997
Chapter 2 Demand Filed:    22.12.1997    
IPC:
C07C 67/11 (2006.01), C07D 477/08 (2006.01)
Applicants: DAIICHI PHARMACEUTICAL CO., LTD. [JP/JP]; 14-10, Nihonbashi 3-chome, Chuo-ku, Tokyo 103 (JP) (For All Designated States Except US).
NISHI, Toshiyuki [JP/JP]; (JP) (For US Only).
ISHIDA, Yohhei [JP/JP]; (JP) (For US Only).
OHTSUKA, Masami [JP/JP]; (JP) (For US Only)
Inventors: NISHI, Toshiyuki; (JP).
ISHIDA, Yohhei; (JP).
OHTSUKA, Masami; (JP)
Agent: HAGINO, Taira; Eikoh Patent Office, ARK Mori Building, 28th floor, 12-32, Akasaka 1-chome, Minato-ku, Tokyo 107 (JP)
Priority Data:
8/261591 02.10.1996 JP
Title (EN) METHOD FOR ESTERIFYING CARBOXYLIC COMPOUNDS
(FR) PROCEDE D'ESTERIFICATION DE COMPOSES CARBOXYLIQUES
Abstract: front page image
(EN)A method for esterifying carboxylic compounds, characterized by treating either a mixture of a carboxylic compound and a base or a salt of a carboxylic compound with a compound represented by the formula R?1¿-X (wherein R?1¿ represents a group capable of forming a biodegradable ester (COOR?1¿) and X represents a halogen atom) in a solvent in the presence of a phase transfer catalyst. The method can provide ester derivatives of carboxylic compounds at a low cost on a commercial scale.
(FR)La présente invention concerne un procédé d'estérification de composés carboxyliques caractérisé en ce qu'il consiste à traiter, dans un solvant en présence d'un catalyseur de transfert de phase, soit un mélange d'un composé carboxylique et d'une base, soit un sel d'un composé carboxylique associé à un composé représenté par la formule R?1¿-X, 'R?1¿' étant un groupe capable de former un ester biodégradable (COOR?1¿) et 'X' étant un atome halogène. Ce procédé permet d'obtenir à échelle commerciale et pour un faible prix de revient des dérivés ester de composés carboxyliques.
Designated States: AL, AU, BA, BB, BG, BR, CA, CN, CU, CZ, EE, GE, HU, ID, IL, IS, JP, KR, LC, LK, LR, LT, LV, MG, MK, MN, MX, NO, NZ, PL, RO, SG, SI, SK, SL, TR, TT, UA, US, UZ, VN, YU.
African Regional Intellectual Property Organization (GH, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)