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1. (WO2001036378) PROCESS FOR THE PREPARATION OF KETIMINES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/036378 International Application No.: PCT/EP2000/010971
Publication Date: 25.05.2001 International Filing Date: 07.11.2000
Chapter 2 Demand Filed: 10.04.2001
IPC:
C07C 249/02 (2006.01) ,C07C 251/20 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
249
Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
02
of compounds containing imino groups
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
251
Compounds containing nitrogen atoms doubly- bound to a carbon skeleton
02
containing imino groups
20
having carbon atoms of imino groups being part of rings other than six-membered aromatic rings
Applicants:
THOMMEN, Marc [CH/CH]; CH (UsOnly)
HAFNER, Andreas [CH/CH]; CH (UsOnly)
BRUNNER, Frédéric [CH/CH]; CH (UsOnly)
KIRNER, Hans-Jörg [DE/CH]; CH (UsOnly)
KOLLY, Roman [CH/CH]; CH (UsOnly)
CIBA SPECIALTY CHEMICALS HOLDING INC. [CH/CH]; Klybeckstrasse 141 CH-4057 Basel, CH (AllExceptUS)
Inventors:
THOMMEN, Marc; CH
HAFNER, Andreas; CH
BRUNNER, Frédéric; CH
KIRNER, Hans-Jörg; CH
KOLLY, Roman; CH
Agent:
CIBA SPECIALITY CHEMICALS HOLDING INC.; Patentabteilung Klybeckstrasse 141 CH-4057 Basel, CH
Priority Data:
99811054.816.11.1999EP
Title (EN) PROCESS FOR THE PREPARATION OF KETIMINES
(FR) PROCEDE DE PREPARATION DE CETIMINES
Abstract:
(EN) The present invention relates to a process for the preparation of compounds of formula (1), in which R1, R2 and R3 independently of one another are hydrogen, halogen, trifluoromethyl or C1-C4alkoxy, wherein a compound of formula (2), in which R1, R2 and R3 are as defined in formula (1), is reacted with methylamine in the presence of a non-alcoholic solvent and, if desired, in the presence of a sulfonic acid catalyst to give the compound of formula (2) and, if desired, is subjected to purification by recrystallization.
(FR) La présente invention porte sur un procédé de préparation de composés de la formule (1), dans laquelle R1, R2 et R3 représentent, indépendamment, hydrogène, halogène, trifluorométhyle ou C1-C4alcoxy. Selon cette invention, un composé de la formule (2), dans laquelle R1, R2 et R3 sont tels que définis dans la formule (1), est mis à réagir avec méthylamine en présence d'un solvant sans alcool et, si souhaité, en présence d'un catalyseur d'acide sulfonique afin d'obtenir le composé de la formule (2) et, si souhaité, est soumis à un processus de purification par recristallisation.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)