作者:Nalajam Guravaiah、Vedula Rajeswar Rao
DOI:10.1080/00397911.2010.515344
日期:2011.9.15
Abstract Synthesis of 3-(2-(phenylsulfonyl) ethynyl)-2H-chromen-2-one is described. Reaction of β-ketosulfones with semicarbazide hydrochloride in ethanol at reflux temperature gave the corresponding semicarbazones, which on oxidative cyclization with selenium dioxide resulted in the formation of the corresponding 1,2,3-selenodiazole derivatives. These on pyrolysis gave the titled compounds.
摘要 描述了 3-(2-(苯基磺酰基) 乙炔基)-2H-chromen-2-one 的合成。β-酮砜与氨基脲盐酸盐在乙醇中在回流温度下反应得到相应的氨基脲,其与二氧化硒氧化环化导致形成相应的 1,2,3-硒二唑衍生物。这些热解得到标题化合物。