An iron(III)-catalyzed one-potthree-component cross-coupling nitration reaction of 2-aminopyridines, aldehydes and nitroalkanes, straightforwardly forms imidazo[1,2-a]pyridinederivatives and is described in this report. The system shows good functional-group tolerance and proceeds smoothly in moderate to good yields.
Iron(II)-Catalyzed Denitration Reaction: Synthesis of 3-Methyl-2-arylimidazo[1,2-a]pyridine Derivatives from Aminopyridines and 2-Methylnitroolefins
作者:Rulong Yan、Guosheng Huang、Hao Yan、Sizhuo Yang、Xiai Gao、Kang Zhou、Chao Ma
DOI:10.1055/s-0032-1317685
日期:——
A variety of ways to synthesize imidazo[1,2-a]pyridines have been reported and many approaches are devoted to the functionalization of imidazo[1,2-a]pyridines. However, the use of a denitration reaction in the synthesis of imidazo[1,2-a]pyridines has not been reported. We report here the iron-catalyzed synthesis of 3-methyl-2-arylimidazo [1,2-a] pyridine derivatives from aminopyridines and 2-methyl-nitroolefins. The procedure, using FeCl2 as catalyst, is simple and inexpensive. Various functional groups are tolerated and provide the products in good yields.
DERIVES DE 2-ARYL-6-PHENYL-IMIDAZO[1,2-A]PYRIDINES POLYSUBSTITUES, LEUR PRÉPARATION ET LEUR APPLICATION EN THÉRAPEUTIQUE
申请人:SANOFI
公开号:EP2262769B1
公开(公告)日:2014-11-05
POLYSUBSTITUTED 2-ARYL-6-PHENYLIMIDAZO[1,2-A]PYRIDINE DERIVATIVES, AND PREPARATION AND THERAPEUTIC USE THEREOF
申请人:DE PERETTI Danielle
公开号:US20110065745A1
公开(公告)日:2011-03-17
Compounds of formula (I):
wherein R, R
1
, R
2
, R
3
, R
4
, and X are as defined in the disclosure, or an acid addition salt thereof, and the therapeutic use and process of synthesis thereof.
Polysubstituted 2-aryl-6-phenylimidazo[1,2-A]pyridine derivatives, and preparation and therapeutic use thereof
申请人:De Peretti Danielle
公开号:US08507520B2
公开(公告)日:2013-08-13
Compounds of formula (I):
wherein R, R1, R2, R3, R4, and X are as defined in the disclosure, or an acid addition salt thereof, and the therapeutic use and process of synthesis thereof.