Microwave-assisted synthesis of 2-aminonicotinic acids by reacting 2-chloronicotinic acid with amines
摘要:
2-(Methylamino)nicotinic acid was readily prepared in high yield by reacting 2-chloronicotinic acid with 40% aq MeNH2 under microwave irradiation either at 120 degrees for 2 h or at 140 degrees C for 1.5 h. Subsequently, we found that a range of 2-aminonicotinic acids could be obtained under microwave heating. The optimal reaction conditions involved the use of 3 equiv of amine, water as the solvent and heating at 200 degrees C for 2 h in the presence of diisopropylethylamine (3 equiv). (C) 2009 Elsevier Ltd. All rights reserved.
[EN] BICYCLIC HETEROCYCLE SUBSTITUTED PYRIDYL COMPOUNDS USEFUL AS KINASE MODULATORS<br/>[FR] COMPOSÉS PYRIDYLES À SUBSTITUTION PAR HÉTÉROCYCLE BICYCLIQUE UTILES EN TANT QUE MODULATEURS DE KINASE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014074657A1
公开(公告)日:2014-05-15
Compounds having the following formula (I) or a stereoisomer or a pharmaceutically-acceptable salt thereof, wherein R2 is a bicyclic heterocycle, and R1, R3, R4, R5 and R6 are as defined herein, that are useful as kinase modulators, including IRAK-4 modulation.