Synthesis of 2-(Arylamino)ethanethiols
via Lewis Acid Catalyzed Aminolysis of 2,2-Dimethylthiirane as Precursors
of the 1,4-Benzothiazine Nucleus
作者:Stefano Sabatini、Roberto Spogli、Giuseppe Manfroni、Oriana Tabarrini、Violetta Cecchetti
DOI:10.1055/s-0029-1216633
日期:——
amines to afford 2-(arylamino)ethanethiols as 6-substituted 1,4-benzothiazine precursors, was investigated. The reaction takes place under mild conditions using copper(II) triflate or indium(III) triflate as catalysts. The regioselectivity of the addition depends on the catalysts and the substituents of the arylamines. Lewis acids - catalysis - 2,2-dimethylthiirane - 2-(aryl-amino)ethanethiols - aminolysis
研究了通过失活的芳族胺使2,2-二甲基噻吩环开环,得到作为6-取代的1,4-苯并噻嗪前体的2-(芳基氨基)乙硫醇。该反应在温和条件下使用三氟甲磺酸铜(II)或三氟甲磺酸铟(III)作为催化剂进行。加成的区域选择性取决于催化剂和芳基胺的取代基。 路易斯酸-催化-2,2-二甲基噻吩烷-2-(芳基氨基)乙硫醇-氨解反应-1,4-苯并噻嗪