[EN] SELECTIVE SYNTHESIS OF CF3-SUBSTITUTED PYRIMIDINES<br/>[FR] SYNTHÈSE SÉLECTIVE DE PYRIMIDINES SUBSTITUÉES EN CF3
申请人:PFIZER PROD INC
公开号:WO2005023780A1
公开(公告)日:2005-03-17
The present invention relates to a method of making a compound of the formula (I),wherein X1, X2 and R3-R4 are as defined herein. The method includes reacting a compound of the formula (II) with an amine of formula (III) (HNR3R4) in the presence of a Lewis Acid and a non-nucleophilic base. The 2,4-diamino pyrimidine moiety is a common component in a variety of biologically active drug-like molecules and pyrimidine derivatives have been found to be useful in the 10 treatment of abnormal cell growth, such as cancer, in mammals.
Selective synthesis of CF3-substituted pyrimidines
申请人:Kath Charles John
公开号:US20050101620A1
公开(公告)日:2005-05-12
The present invention relates to a method of making a compound of the formula
wherein X
1
, X
2
and R
3
—R
4
are as defined herein. The method includes reacting a compound of the formula
with an amine of formula 3 (HNR
3
R
4
) in the presence of a Lewis Acid and a non-nucleophilic base. The 2,4-diamino pyrimidine moiety is a common component in a variety of biologically active drug-like molecules and pyrimidine derivatives have been found to be useful in the treatment of abnormal cell growth, such as cancer, in mammals.
SELECTIVE SYNTHESIS OF CF3-SUBSTITUTED PYRIMIDINES
申请人:Pfizer Products Inc.
公开号:EP1663991B1
公开(公告)日:2007-01-10
US7122670B2
申请人:——
公开号:US7122670B2
公开(公告)日:2006-10-17
Selective addition of amines to 5-trifluoromethyl-2,4-dichloropyrimidine induced by Lewis acids
作者:Daniel T. Richter、John C. Kath、Michael J. Luzzio、Nandell Keene、Martin A. Berliner、Matthew D. Wessel
DOI:10.1016/j.tetlet.2013.06.025
日期:2013.8
A variety of 2,4-diamino-pyrimidine systems can be prepared from the corresponding 2,4-dichloropyrimidine by sequential addition of two amines, the first adding selectively to the 4-position. In contrast it was found that 2,4-dichloro-5-trifluoromethyl-pyrimidine yields a 1:1 mixture of the two possible isomers. Lewis acids were employed to increase the ratio of isomers to >10:1 in favor of the 2-addition product. Optimization of the effect of Lewis acid additives on this and other dichloropyrimidine systems will be discussed. (C) 2013 Elsevier Ltd. All rights reserved.