Iodine-catalyzed Friedel–Crafts alkylation of electron-rich arenes with aldehydes: efficient synthesis of triarylmethanes and diarylalkanes
作者:Jaray Jaratjaroonphong、Supaporn Sathalalai、Prapapan Techasauvapak、Vichai Reutrakul
DOI:10.1016/j.tetlet.2009.08.036
日期:2009.11
Iodine is shown to be an efficient catalyst for the Friedel–Crafts alkylation of arenes with a wide variety of aldehydes in toluene under ‘open-flask’ and mild conditions. In the presence of 10 mol % of iodine, the reaction of arenes with aromatic aldehydes gives the corresponding triarylmethane derivatives (TRAMs), regioselectively, in good to excellent yields. On the other hand, a series of diarylalkane
碘在“开瓶”和温和条件下被证明是一种有效的催化剂,用于将芳烃与多种醛在甲苯中进行弗里德-克拉夫茨烷基化反应。在10mol%的碘存在下,芳烃与芳族醛的反应区域选择性地以良好或优异的产率得到相应的三芳基甲烷衍生物(TRAM)。另一方面,通过与脂族醛反应,顺利地合成了一系列的二芳基烷烃衍生物。