摘要 已开发出铜(I)催化的酮肟肟乙酸酯与简单的吡啶的好氧氧化偶联,用于合成咪唑并[1,2- a ]吡啶。该反应可耐受各种官能团,并且在温和条件下以高收率提供了一系列有价值的咪唑并[1,2- a ]吡啶。 已开发出铜(I)催化的酮肟肟乙酸酯与简单的吡啶的好氧氧化偶联,用于合成咪唑并[1,2- a ]吡啶。该反应可耐受各种官能团,并且在温和条件下以高收率提供了一系列有价值的咪唑并[1,2- a ]吡啶。
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.
[EN] SELECTIVE LIGANDS OF HUMAN CONSTITUTIVE ANDROSTANE RECEPTOR<br/>[FR] LIGANDS SÉLECTIFS DU RÉCEPTEUR D'ANDROSTANE CONSTITUTIF HUMAIN
申请人:USTAV ORGANICKE CHEMIE A BIOCHEMIE AV CR V V I
公开号:WO2020221380A1
公开(公告)日:2020-11-05
The present invention provides a structurally novel class of heterocyclic compounds of general formula I wherein L1 is heteroaryl and L2 is heteroaryl or aryl. The novel compounds are useful in a method of prevention or treatment of a condition which is mediated by the action, or by loss of action, of Constitutive androstane receptor (CAR) receptor or its endogenous ligands. The present invention thus provides the novel compounds for medicinal use, as well as pharmaceutical composition containing said compounds. (I)
Copper-Catalyzed Decarboxylative Three-Component Reactions for the Synthesis of Imidazo[1,2-a]pyridines
作者:Thiruvengadam Palani、Kyungho Park、Manian Rajesh Kumar、Hyun Ming Jung、Sunwoo Lee
DOI:10.1002/ejoc.201200679
日期:2012.9
Imidazo[1,2-a]pyridine derivatives were synthesized through multicomponent couplingreactions of 2-aminopyridines, aldehydes, and alkynecarboxylic acids in the presence of 10 mol-% CuI/Cu(OTf)2. Both aryl- and alkyl-substituted alkynecarboxylic acids, including propiolic acid, were good alkyne sources and afforded the desired imidazo[1,2-a]pyridines in good yields through the decarboxylative coupling
One-Pot Synthesis of 3-Methyl-2-arylimidazo[1,2-<i>a</i>]pyridines Using Calcium Carbide as an Alkyne Source
作者:Wei Chen、Zheng Li
DOI:10.1021/acs.joc.1c01877
日期:2022.1.7
An efficient method for the construction of 3-methyl-2-arylimidazo[1,2-a]pyridines from the reactions of calcium carbide, 2-aminopyridines, and aromatic aldehydes is described. The notable advantages for this strategy include the use of an inexpensive and concise solid alkyne source, cheap and readily available raw materials, wide-scope substrates, and a simple work-up procedure.
描述了一种由电石、2-氨基吡啶和芳香醛反应构建 3-甲基-2-芳基咪唑并[1,2- a ] 吡啶的有效方法。该策略的显着优势包括使用廉价且简洁的固体炔烃源、廉价且容易获得的原材料、广泛的底物和简单的后处理程序。
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.