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1. (WO1998028260) A PROCESS FOR THE PREPARATION OF AN INTERMEDIATE USEFUL IN THE SYNTHESIS OF IODINATED CONTRAST MEDIA
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/028260    International Application No.:    PCT/EP1997/007061
Publication Date: 02.07.1998 International Filing Date: 16.12.1997
IPC:
C07C 231/02 (2006.01)
Applicants: BRACCO INTERNATIONAL B.V. [NL/NL]; Strawinskylaan 3051, NL-1077 ZX Amsterdam (NL) (For All Designated States Except US).
VILLA, Marco [IT/IT]; (IT) (For US Only).
PAIOCCHI, Maurizio [IT/IT]; (IT) (For US Only)
Inventors: VILLA, Marco; (IT).
PAIOCCHI, Maurizio; (IT)
Agent: MINOJA, Fabrizio; Bianchetti Bracco Minoja S.r.l., Via Rossini, 8, I-20122 Milano (IT)
Priority Data:
MI96A002735 24.12.1996 IT
Title (EN) A PROCESS FOR THE PREPARATION OF AN INTERMEDIATE USEFUL IN THE SYNTHESIS OF IODINATED CONTRAST MEDIA
(FR) PROCEDE DE PREPARATION D'UN PRODUIT INTERMEDIAIRE UTILE POUR LA SYNTHESE DE MILIEUX DE CONTRASTE IODES
Abstract: front page image
(EN)A process for the preparation of the compound L-5-(2-acetoxypropionylamino)-2,4,6-triiodoisophthaloyl dichloride by reacting 5-amino-2,4,6-triiodoisophthaloyl dichloride with L-2-acetoxypropionyl chloride in N,N-dimethylacetamide as a solvent, characterized in that a catalytic amount of a lower alcohol is added to the reaction mixture.
(FR)L'invention concerne un procédé destiné à la préparation du composé dichlorure de L-5-(2-acétoxypropionylamino)-2,4,6-triiodoisophtaloyle par mise en réaction de dichlorure de 5-amino-2,4,6-triiodoisophtaloyle avec du chlorure de L-2-acétoxypropionyle dans du N,N-diméthylacétamide utilisé comme solvant; ce procédé se caractérise par le fait qu'une quantité catalytique d'un alcool inférieur est ajoutée au mélange réactionnel.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, 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: English (EN)
Filing Language: English (EN)