Convenient preparation of 4-arylmethyl- and 4-hetarylmethyl thiazoles by regioselective cycloaddition reactions of 3-sulfanyl- and selanylpropargyl alcohols
作者:Mitsuhiro Yoshimatsu、Miki Matsui、Teruhisa Yamamoto、Arisa Sawa
DOI:10.1016/j.tet.2010.08.015
日期:2010.10
Complete details of thiazole syntheses by scandium-catalyzed cycloaddition reactions of 1-aryl- and 1,1-bisaryl-3-phenylsulfanylpropargyl alcohols with thioamides are described. Reactions of 1,1-bisarylpropargyl alcohols with thioamides and selenamide in MeNO2/H2O resulted in 4-bisarylmethyl-1,3-thiazoles 4aa–ic and 4H-4,4-bisaryl-1,3-thiazines 5ea–ga in high yields. Reactions in MeNO2/D2O resulted
描述了通过1-芳基和1,1-双芳基-3-苯基硫烷基炔丙基醇与硫酰胺的scan催化的环加成反应合成噻唑的完整细节。1,1-双芳基炔丙醇与硫酰胺和硒酰胺在MeNO 2 / H 2 O中的反应生成4-双芳基甲基-1,3-噻唑4aa – ic和4H-4,4-双芳基-1,3-噻嗪5ea – ga高产。在MeNO 2 / D 2 O中的反应产生了具有高氘纯度的4-双芳基氘甲基-1,3-噻唑10ca – ia。还描述了二烷基和烷基芳基炔丙基醇的反应。