ZnO nanoparticles: a green efficient catalyst for the room temperature synthesis of biologically active 2-aryl-1,3-benzothiazole and 1,3-benzoxazole derivatives

被引：92

作者：

Banerjee, Subhash ^{[1
]}

Payra, Soumen ^{[1
]}

Saha, Arijit ^{[1
]}

Sereda, Grigoriy ^{[2
]}

机构：

[1] Guru Ghasidas Vishwavidyalaya, Dept Chem, Bilaspur 495009, Chhattisgarh, India

[2] Univ S Dakota, Dept Chem, Vermillion, SD 57069 USA

来源：

TETRAHEDRON LETTERS | 2014年 / 55卷 / 40期

关键词：

Catalysis; ZnO nanoparticles; 2-Aryl-1,3-benzothiazoles; 2-Aryl-1,3-benzoxazoles; New acid-base indicator; PHENOLIC SCHIFF-BASES; ONE-POT SYNTHESIS; ANTITUMOR BENZOTHIAZOLES; 2-SUBSTITUTED BENZOTHIAZOLES; FACILE SYNTHESIS; IN-VITRO; OXIDATIVE CYCLIZATION; SILICA NANOPARTICLE; PRACTICAL SYNTHESIS; PROMOTED SYNTHESIS;

D O I：

10.1016/j.tetlet.2014.07.123

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A facile synthetic protocol for the synthesis of 2-aryl-1,3-benzothiazoles and 1,3-benzoxazoles has been demonstrated using ZnO nanoparticles as a mild and efficient heterogeneous catalyst. The reactions using ZnO nanoparticles were very fast (<8 min) and provided excellent yields (>90%) of the products. The catalyst was recycled and reused up to eight times without significant loss of catalytic activity. The potential application of 2-(4-hydroxyphenyl)-1,3-benzothiazole as new acid-base indicator has also been demonstrated in this Letter. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：5515 / 5520

页数：6

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