Feng, Feng; Ye, Jia; Cheng, Zheng; Xu, Xiaoliang; Zhang, Qunfeng; Ma, Lei; Lu, Chunshan; Li, Xiaonian published an article about the compound: 2-Ethylbenzo[d]oxazole( cas:6797-13-3,SMILESS:CCC1=NC2=CC=CC=C2O1 ).Name: 2-Ethylbenzo[d]oxazole. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:6797-13-3) through the article.
The coupling of multi-step reactions catalyzed by a heterogeneous catalyst is an important path to accomplish some unconventional chem. transformations. Since the starting materials generated from previous steps were adsorbed on the catalyst, the activation energy of following steps was largely decreased, and thus the reaction conditions were more mild and environmentally friendly. Catalyzed by a multifunctional Cu-Pd/γ-Al2O3 catalyst, the transfer hydrogenation and successive cyclization coupling reaction from o-nitroaniline and alc. to afford benzimidazole derivatives I (R1 = H, CH3, OCH3, Cl, F; R2 = H, CH3, C2H5, n-Pr, Ph) in high yield was realized. The catalyst could be reused several times without loss of activity. The synergies of reforming hydrogenation of Cu-Pd bimetal and support acidity of γ-Al2O3 were responsible for this catalytic transformation.
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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem