Novel synthesis of tetrahydro-β-carbolines and tetrahydroisoquinolines via three-component reaction using hexagonally ordered mesoporous AlSBA-15 catalysts
作者:Ajayan Vinu、Pranjal Kalita、Leila Samie、Murugulla Adharvana Chari、Ravindra Pal、B.V. Subba Reddy
DOI:10.1016/j.tetlet.2009.11.111
日期:2010.1
furnish tetrahydrocarbolines in good yields with a high selectivity. This reaction also proceeds with homoveratrylamine to give the corresponding tetrahydroisoquinolines. A variety of aryl and heteroaryl aldehydes have also been used for producing tetrahydrocarbolines in high yields. This AlSBA-15-promoted Pictet–Spengler reaction provides a mild alternative to the traditional Brönsted or Lewis acids
色胺,芳基醛和苄基氯在80°C的乙腈中使用具有六方孔结构的有序介孔AlSBA-15催化剂进行平滑偶联,从而以高收率和高选择性提供四氢萘。该反应也用高凡拉明进行,得到相应的四氢异喹啉。各种芳基和杂芳基醛也已被用于高产率地生产四烃基化合物。这种由AlSBA-15促进的Pictet-Spengler反应提供了温和的替代方法,可替代通常用于制备四烃和四氢异喹啉的传统布朗斯台德酸或路易斯酸。