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Machine translation
1. (WO2006090409) AN IMPROVED PROCESS FOR THE PREPARATION OF 5 - CARBOXYPHTHALIDE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/090409    International Application No.:    PCT/IN2005/000121
Publication Date: 31.08.2006 International Filing Date: 20.04.2005
IPC:
C07D 307/88 (2006.01)
Applicants: KEKULE PHARMA LTD., [IN/IN]; A-4 Madhura Nagar, S.R.Nagar Post, Hyderabad 500 038 (IN) (For All Designated States Except US).
RAJA RAO, Kudaravalli [IN/IN]; (IN) (For US Only).
MURALIDHAR, Rambathri [IN/IN]; (IN) (For US Only)
Inventors: RAJA RAO, Kudaravalli; (IN).
MURALIDHAR, Rambathri; (IN)
Priority Data:
182 CHE 2005 28.02.2005 IN
Title (EN) AN IMPROVED PROCESS FOR THE PREPARATION OF 5 - CARBOXYPHTHALIDE
(FR) PROCEDE AMELIORE DE PREPARATION DU 5-CARBOXYPHTALIDE
Abstract: front page image
(EN)The invention disclosed in this applications relates to an improved process for the preparation of 5-carboxy phthalide useful as an intermediate for the preparation of citlopram which comprises adding terephthalic acid to Chloromethyl chlorosulphate , heating , adding water portion wise filtering , centrifuging and washing the resultant product with water.
(FR)La présente invention concerne un procédé amélioré de préparation du 5-carboxyphtalide utile en tant qu’intermédiaire pour la préparation du citalopram comprenant les étapes consistant à ajouter de l'acide téréphtalique au chlorosulfate de chlorométhyle, chauffer, ajouter de l'eau en plusieurs parties, centrifuger et laver le produit résultant avec de l'eau.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, 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, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, 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, NA, 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, IS, IT, LT, LU, MC, NL, PL, 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)