Novel, Mild, and Highly Efficient Method for the Synthesis of 2-Arylbenzothiazoles by the Oxidation of 2-Arylbenzothiazolines with Silicon Lewis Acids
摘要:
Oxidation of structurally diverse 2-arylbenzothiazolines to give the corresponding 2-arylbenzothiazoles has been carried out in benzene using dimethyldichlorosilane and trimethylchlorosilane. Short reaction times, mild reaction conditions, easy and quick isolation of the products, and excellent yields are the main advantages of this procedure.
Synthesis of 2-Arylbenzothiazoles Catalyzed by Biomimetic Catalyst, β-Cyclodextrin
作者:Balaji S. Londhe、Umesh R. Pratap、Jyotirling R. Mali、Ramrao A. Mane
DOI:10.5012/bkcs.2010.31.8.2329
日期:2010.8.20
Cyclocondensation of 2-aminothiophenol and aryl/heteryl aldehydes has been carried using biomimetic catalyst, $\beta$-Cyclodextrin in water and obtained 2-aryl/heteryl benzothiazoles with better to excellent yields. This biomimetic catalyzed route is simple, economic, and environmentally benign.
one‐pot and simple synthesis of 2‐aryl/heteroarylbenzothiazoles by the reaction of 2‐aminothiophenol and aryl/heteroaryl aldehydes mediated by hypervalentiodine (III) reagents under solvent‐free condition at room temperature is demonstrated. All the reactions were carried out by grinding the reactants (2‐aminothiophenol and aryl/heteroaryl aldehydes) with hypervalentiodine (III) reagents in a mortar with