24622-33-1Relevant articles and documents
Method for synthesizing benzothiazole by microwave radiation of benzothioamide compound in aqueous phase
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Paragraph 0013; 0021, (2019/02/13)
The invention discloses a method for synthesizing benzothiazole by microwave radiation of a benzothioamide compound in an aqueous phase. The method includes the steps: adding the benzothioamide compound into the aqueous phase under microwave conditions; performing cyclization under alkaline conditions to generate the benzothiazole. The method for preparing the benzothiazole is environmentally friendly, simple and convenient in operation, safe, cheap and efficient. Compared with the prior art, the method is applicable to a lot of functional groups, high in yield, few in by-products, simple in operation, safe, low in cost and environmentally friendly.
Synthesis method of 2-aminobenzothiazole compounds
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Paragraph 0070; 0071; 0072, (2017/11/16)
The invention discloses a preparation method of 2-aminobenzothiazole compounds. The 2-aminobenzothiazole compounds is prepared from the following steps of dissolving phenyl/naphthalene isothiocyanateand primary amine into a solvent, adding a catalyst iodine and an oxidant, carrying out one-pot multi-step tandem reaction to prepare the 2-aminobenzothiazole compounds under the temperature of 80 to 150 DEG C. The synthesis method has the advantages that raw materials are cheap and easily available, the reaction condition is mild, the substrate application range is broad, atom economy is high, requirements of green chemical are met, and a novel method which is economical and practical and green and environmentally friendly is provided for synthesis of the 2-aminobenzothiazole compounds.
Direct amination of azoles using CuCl2 complexes of amines under mild conditions
Xu, Juan,Li, Jiarong,Wei, Zhen,Zhang, Qi,Shi, Daxin
, p. 9622 - 9624 (2013/09/02)
The efficient direct amination of azoles, including benzoxazole, benzothiazole and 1-methylbenzimidazole, was accomplished in moderate to good yields using CuCl2 complexes of amines as a readily available and effective nitrogen source. The coupling reactions were performed under mild conditions: at 30-50°C within 3-6 h, in air without oxidant, additive, ligand and anhydrous conditions.