Organothiophosphates have found widespread application as biologicallyactivecompounds and synthetic intermediates in medicinal chemistry. The first transition‐metal‐free one‐pot direct synthesis of heterocyclic phosphorothioates involving indole or imidazo[1,2‐a]pyridine derivatives, elemental sulfur, and P(O)H compounds is presented. The use of NaI or KI as a catalyst, tert‐butyl hydroperoxide as
Iron-Catalyzed Dehydrogenative sp<sup>3</sup>–sp<sup>2</sup> Coupling via Direct Oxidative C–H Activation of Acetonitrile
作者:Huimin Su、Luyao Wang、Honghua Rao、Hao Xu
DOI:10.1021/acs.orglett.7b00678
日期:2017.5.5
An iron-catalyzed dehydrogenative sp3–sp2 coupling of acetonitrile and 2-arylimidazo[1,2-a]pyridine has been realized, which can serve as a novel approach toward heteroarylacetonitriles. The merit of this strategy is illustrated by the breadth of functional groups tolerated in the transformation and the fast access to pharmaceuticals (such as zolpidem) directly from the heteroarylacetonitriles.
乙腈与2-芳基咪唑[1,2- a ]吡啶的铁催化的sp 3 –sp 2脱氢偶联反应已经实现,可以作为杂芳基乙腈的一种新方法。该策略的优点通过转化中可耐受的官能团的广度以及直接从杂芳基乙腈快速获得药品(如唑吡坦)来说明。
Synthesis and Structure−Activity Relationships of Imidazopyridine/Pyrimidine‐ and Furopyridine‐Based Anti‐infective Agents against Trypanosomiases
作者:Daniel G. Silva、Anna Junker、Shaiani M. G. Melo、Fernando Fumagalli、J. Robert Gillespie、Nora Molasky、Frederick S. Buckner、An Matheeussen、Guy Caljon、Louis Maes、Flavio S. Emery
DOI:10.1002/cmdc.202000616
日期:2021.3.18
could be defined as active against Trypanosoma cruzi and T. brucei brucei, respectively (antitrypanosomal activities <10 μM). The present work discusses the structure−activityrelationships of new fused‐ring scaffolds based on imidazopyridine/pyrimidine and furopyridine cores. This library of compounds shows significant potential for anti‐trypanosomiases drug discovery.
Peroxide-mediated site-specific C–H methylation of imidazo[1,2-<i>a</i>]pyridines and quinoxalin-2(1<i>H</i>)-ones under metal-free conditions
作者:Shengzhou Jin、Hua Yao、Sen Lin、Xiaoqing You、Yao Yang、Zhaohua Yan
DOI:10.1039/c9ob02328c
日期:——
An effective approach to realize the direct methylation of imidazo[1,2-a]pyridines and quinoxalin-2(1H)-ones with peroxides under metal-free conditions is described.
Iodine-Mediated Sulfenylation of Imidazo[1,2-a]pyridines with Ethyl Arylsulfinates
作者:Dong Tang、Jian Sun、Yangxiu Mu、Zafar Iqbal、Jing Hou、Minghua Yang、Zhixiang Yang
DOI:10.1055/a-1396-5933
日期:2021.6
approach is reported for the synthesis of sulfenylated imidazo[1,2-a]pyridines through the reaction of imidazo[1,2-a]pyridines with ethyl arylsulfinates under mild conditions. The reaction scope was investigated, and a plausible mechanism is proposed to elucidate the reaction process and activation mode. The results indicate that ethyl sulfinates are efficient sulfur sources for the construction of C–S