Vinylphosphonium Salt Mediated Reaction between Alkyl Propiolates and Aminophenols or Hydroxyphenols
作者:Issa Yavari、Sanaz Souri、Mehdi Sirouspour、Hoorieh Djahaniani
DOI:10.1055/s-2006-950230
日期:——
Addition of catechol to methyl propiolate or ethyl phenylpropiolate in the presence of Ph3P leads to methyl 2-(1,3-benzodioxol-2-yl)acetate or 3-(1-phenylmethylidene)-1,4-benzodioxin-2-one. 2-Aminophenols react with alkyl propiolates in the presence of Ph3P to produce a nearly 1:1 mixture of 3-methyl-2H-1,4-benzoxazin-2-one derivatives and methyl (E)-3-(2-aminophenoxy)-2-propenoates.
在 Ph3P 存在的情况下,将邻苯二酚加入丙炔酸甲酯或苯基丙炔酸乙酯中,可生成 2-(1,3-苯并二恶茂-2-基)乙酸甲酯或 3-(1-苯基亚甲基)-1,4-苯并二恶嗪-2-酮。2-Aminophenols 与烷基丙酸酯在 Ph3P 的存在下发生反应,生成接近 1:1 的 3-甲基-2H-1,4-苯并恶嗪-2-酮衍生物和 (E)-3-(2-氨基苯氧基)-2-丙烯酸甲酯混合物。