Lewis acid mediated reactions of cyclopropyl aryl ketones with arylaldehydes, facile preparation of 2-(2-hydroxyethyl)-1,3-diarylpropenones
作者:Min Shi、Yong-Hua Yang、Bo Xu
DOI:10.1016/j.tet.2004.12.028
日期:2005.2
In the presence of Lewis acid TMSOTf, ring-opening reaction of aryl cyclopropyl ketone with arylaldehyde took place under mild conditions to give 2-(2-hydroxyethyl)-1,3-diarylpropenone in good yield. By protection of hydroxy group with triethylsilyl group (TES), the corresponding ring-opened product 7 was obtained in high yield with good geometrical selectivity.
在路易斯酸TMSOTf的存在下,芳基环丙基酮与芳基醛的开环反应在温和的条件下发生,以良好的产率得到2-(2-羟乙基)-1,3-二芳基丙烯酮。通过用三乙基甲硅烷基(TES)保护羟基,以高收率和良好的几何选择性获得了相应的开环产物7。