Fe(OTf)2 has been found to be an efficient catalyst for the Oxa-Pictet–Spengler cyclization reaction leading to isochromans. A series of substituted isochromans were obtained with good to excellent isolated yields by coupling β-arylethanols with aldehydes or ketals under the catalysis of 1 mol% of Fe(OTf)2 at 70 °C. Using a cheap, less-toxic catalyst with water as the only byproduct, this iron-catalyzed
已发现Fe(OTf)2是导致异色团的Oxa-Pictet-Spengler环化反应的有效催化剂。通过 在70℃下1摩尔%的Fe(OTf)2催化下,将β-芳基
乙醇与醛或
缩酮偶联,可以得到一系列具有良好分离效果的取代
异色满。使用廉价的,毒性较小的催化剂,
水是唯一的副产物,这种
铁催化的Oxa-Pictet-Spengler反应可以被认为对环境友好且经济实惠。