Expeditious and Efficient Synthesis of Benzoxazoles, Benzothiazoles, Benzimidazoles Catalyzed by Ga(OTf)3 under Solvent-Free Conditions

被引：16
|
作者：
Liu Juyan [1 ]
Liu Qian [1 ]
Xu Wei [1 ]
Wang Weilu [1 ]
机构：
[1] Tianjin Normal Univ, Coll Chem, Tianjin Key Lab Struct & Performance Funct Mol, Tianjin, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 2011年 / 29卷 / 08期
关键词：
benzoxazoles; benzothiazoles; benzimidazoles; solvent-free; ONE-POT SYNTHESIS; 2-SUBSTITUTED BENZIMIDAZOLES; GALLIUM(III) TRIFLATE; MICROWAVE-IRRADIATION; ULTRASOUND IRRADIATION; POLYPHOSPHORIC ACID; SCANDIUM TRIFLATE; ROOM-TEMPERATURE; FACILE METHOD; LEWIS-ACID;
D O I：
10.1002/cjoc.201180310
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new and efficient method for the synthesis of benzoxazoles, benzothiazoles, benzimidazoles from reactions of o-substituted aminoaromatics with orthoesters in the presence of catalytic amounts of Ga(OTf)(3) under solvent-free conditions is presented. The remarkable features of this new protocol are high conversion, very short reaction times, cleaner reaction profiles under solvent-free conditions, straight forward procedure, and use of relatively non-toxic catalysts.
引用
收藏
页码：1739 / 1744
页数：6
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