A study of chemical carcinogenesis. 91. Reactions with deoxyguanosine of 4-(carbethoxynitrosamino)-1-(3-pyridyl)-1-butanone, a model compound for .alpha.-hydroxylation of tobacco-specific nitrosamines
PROCESS FOR THE PREPARATION OF IMATINIB AND INTERMEDIATES THEREOF
申请人:Falchi Alessandro
公开号:US20100076189A1
公开(公告)日:2010-03-25
It is the object of the present invention a process for the preparation of 4-methyl-N3-[4-(3-pyridinyl)-2-pyrimidinyl]-1,3-benzenediamine and analogues thereof, intermediates useful for the synthesis of Imatinib, or 4-[(4-methyl-1-piperazinyl)methyl]-N-[4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]phenyl]benzamide.
β-unsaturated ketones could be obtained by palladium-catalyzed ring-opening of mono-substituted cyclopropyl ketones efficiently and systematically. (E)-1-Arylbut-2-en-1-ones were generated from aryl cyclopropyl ketones stereoselectively in yields of 23–89% by the Pd(OAc)2/PCy3 catalytic system. The reaction exhibited stereoselectivity (only E products were found) and was suitable for both phenyl and
在此,我们报道通过钯催化的单取代环丙基酮的开环可以有效且系统地获得α,β-不饱和酮。( E )-1-Arylbut-2-en-1-ones 通过 Pd(OAc) 2 /PCy 3催化体系由芳基环丙基酮立体选择性生成,收率为 23-89% 。该反应表现出立体选择性(仅发现E产物)并且适用于苯基和杂芳基环丙基酮。
Intermediates and a process employing the intermediates for the preparation of (3-trifluoromethylsulfonyl)-n-[4-methyl-3- (4-pyridin-3-yl-pyrimidin-2ylamino)-phenyl]-benzamide
申请人:Natco Pharma Limited
公开号:EP2426119A1
公开(公告)日:2012-03-07
A method of preparing (3-trifluoromethylsulfonyl)-N-[4-methyl-3-nitrophenyl]-benzamide, the method comprising:
providing a compound of formula VI, (3-trifluomethylsulfonyl) benzoyl chloride;
condensing 4-methyl-3-nitro-aniline with the compound of formula (VI) at 30 to 40°C in chlorohydrocarbon solvent with aqueous alkali addition to obtain a compound of formula (III) (3-trifluoromethylsulfonyl)-N-[4-methyl-3-nitrophenyl]-benzamide.
INTERMEDIATES AND A PROCESS EMPLOYING THE INTERMEDIATES FOR THE PREPARATION OF (3-TRIFLUOROMETHYLSULFONYL)-N-[4-METHYL-3-(4-PYRIDIN-3YL-PYRIMIDIN-2YLAMINO)-PHENYL]-BENZAMIDE
申请人:Kompella Amala Kishan
公开号:US20080249121A1
公开(公告)日:2008-10-09
This invention relates to a process for the preparation of (3-trifluoromethylsulfonyl)-N-[4-methyl-3-(4-pyridin-3yl-pyrimidin-2ylamino)-phenyl]-benzamide (formula (I)) starting from 4-methyl-2-nitro-aniline (formula (II)) through intermediates (3-trifluoromethylsulfonyl)-N-[4-methyl-3-nitrophenyl]-benzamide (formula (III)), (3-trifluoromethylsulfonyl)-N-[3-amino-4-methylphenyl]-benzamide (formula (IV)) and (3-trifluoromethylsulfonyl)-N-[3-guanidino-4-methylphenyl]-benzamide (formula (V)). This invention also relates to processes for the preparation of these intermediates. The compound of formula (I), also known as AN-024, is: