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Liu, Xing; Zhang, Shi-Bo und Dong, Zhi-Bing (2018): AlCl3-Promoted Synthesis of 2-Mercapto Benzoheterocycles by Using Sodium Dimethyldithiocarbamate as Thiocarbonyl Surrogate. In: European Journal of Organic Chemistry, Nr. 39: S. 5406-5411

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Abstract

A simple, expeditious and high-efficiency synthetic method for the AlCl3-mediated one-pot preparation of 2-mercapto benzoheterocycles (2-mercapto benzothiazoles, benzoxazoles and benzimidazoles) is described. By the treatment of a series of S, O and N heteroatoms containing bifunctional molecules with sodium dimethyldithiocarbamate in AlCl3, the desired benzoheterocycles are obtained smoothly. The protocol can also be applied on the synthesis of a series of thiazolidine-2-thiones, imidazolidine-2-thiones. This novel synthetic approach has advantages such as ligand-free, high efficiency, short reaction time, readily available starting materials and simple experimental procedures.

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