885272-76-4Relevant articles and documents
Synthesis of C3-Cyanomethylated Imidazo[1,2- a ]pyridines via Ultrasound-Promoted Three-Component Reaction under Catalyst- and Oxidant-Free Conditions
Wu, Qingguo,Yang, Haifeng,Zhang, Jian,Zhang, Jie,Zhang, Yufeng
supporting information, p. 264 - 268 (2022/02/05)
An efficient synthesis of C3-cyanomethylated imidazo[1,2-α]pyridines via ultrasound-promoted three-component reaction under catalyst-free, oxidant-free, and mild conditions has been developed. A series of C3-cyanomethylated imidazo[1,2-α]pyridines were rapidly prepared with satisfactory yields and good functional group compatibility. This strategy cloud also be applied to the synthesis of zolpidem and alpidem in short steps.
Synthesis method of naphtho[1', 2': 4, 5]imidazo[1, 2-a]pyridine-5, 6-diketone compound
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Paragraph 0069-0070, (2020/07/02)
The invention discloses a synthetic method of a naphtho[1', 2': 4, 5]imidazo[1, 2-a]pyridine-5, 6-diketone compound, which belongs to the technical field of organic chemistry. The synthesis method comprises the following steps: taking 2-aryl imidazo[1, 2-a] pyridine compound and diazonium acetonitrile as raw materials; synthesizing a 3-cyanomethylated imidazo[1, 2-a]pyridine compound 3 in the presence of a catalyst, reacting the compound 3 with an alcohol under the action of an acid to obtain an imidazo [1, 2-a] pyridine-3-acetate compound 4, and finally heating PPA to condense into a ring andsimutanously forms naphtho[1', 2': 4, 5]imidazo[1, 2-a]pyridine-5,6-dione 5. The whole process of the method is carried out in the air, the used catalysts are common catalysts, the method is low in cost and environmentally friendly, the raw materials are easy to obtain, and a new synthesis path is provided for the compounds.
Iron-Catalyzed Dehydrogenative sp3-sp2 Coupling via Direct Oxidative C-H Activation of Acetonitrile
Su, Huimin,Wang, Luyao,Rao, Honghua,Xu, Hao
, p. 2226 - 2229 (2017/05/12)
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.