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NCS/TBHP promoted C2 Arylation of Benzothiazoles with Aldehydes in DMSO
Tetrahedron Letters ( IF 1.8 ) Pub Date : 2020-03-07 , DOI: 10.1016/j.tetlet.2020.151807
Wen-Xiu Xu , Fei-Xia Ye , Xing-Hai Liu , Jian-Quan Weng

A N-chlorosuccinimide catalyzed oxidative synthesis of 2-aryl benzothiazole from benzothiazoles and aryl aldehydes using tert-butyl peroxybenzoate as an oxidant in dimethyl sulfoxide (DMSO) has been developed in moderate to good yields. Solvent DMSO as a strong Lewis base plays an efficient role in the reaction. Various substrates were tolerated under optimized conditions affording the arylated products in 12–94% yields for 28 examples. Additionally, acylated benzothiazoles were produced with 4 examples.



中文翻译:

NCS / TBHP促进DMSO中苯并噻唑与醛的C2芳基化

已经开发了N-氯代琥珀酰亚胺使用过氧苯甲酸丁酯作为氧化剂在二甲亚砜(DMSO)中由苯并噻唑和芳基醛催化氧化合成2-芳基苯并噻唑的方法。作为强路易斯碱的溶剂DMSO在反应中起有效作用。在优化的条件下可以耐受各种底物,使28个实例的芳基化产物收率为12–94%。另外,用4个实施例制备了酰化的苯并噻唑。

更新日期:2020-03-09
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