Room temperature synthesis of 2-benzimidazoles with hydrogen peroxide as oxidant and supported ammonium molybdate as catalyst

被引：3

作者：

Lan, Xingwang ^{[1
]}

Wang, Chunzheng ^{[1
]}

Tian, Fei ^{[1
]}

Qiu, Mande ^{[1
]}

Bai, Guoyi ^{[1
]}

机构：

[1] Hebei Univ, Coll Chem & Environm Sci, Key Lab Chem Biol Hebei Prov, Baoding 071002, Hebei, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2015年 / 41卷 / 08期

基金：

中国国家自然科学基金;

关键词：

2-Benzimidazole; Hydrogen peroxide; Ammonium molybdate; Aldehyde; o-Phenylenediamine; Support; BENZIMIDAZOLE DERIVATIVES; OXIDATIVE DEHYDROGENATION; EFFICIENT SYNTHESIS; SYSTEM; ANALOGS; PROPANE;

D O I：

10.1007/s11164-014-1683-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An environmentally benign method with hydrogen peroxide as oxidant has been developed for the synthesis of 2-benzimidazoles from aromatic aldehydes and o-phenylenediamine. Ammonium molybdate catalyzes this transformation, and supported ammonium molybdate was more active than the unsupported compound. Results from characterization imply SiO2-supported ammonium molybdate has a planar structure, which explains its high activity but poor stability, because of loss of active species during the reaction. Good activity and stability were observed for TiO2 and gamma-Al2O3-supported ammonium molybdate; this was ascribed to the porous structure of the supports and the highly dispersed active species.

引用

页码：5587 / 5598

页数：12

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