作者:Tai-Ping Du、Gang-Guo Zhu、Jian Zhou
DOI:10.2174/157017812800167420
日期:2012.3.1
Benzylamine in combination with acetic acid was identified as a powerful catalyst for the condensation of oxindole with aldehydes, acetone or cyclic ketones. A variety of 3-alkyloxindoles could be readily prepared in 10 mmol scale via the sequential benzylamine acetate catalyzed condensation of oxindoles with aldehydes (or ketones) and conjugate reduction by NaBH4.
苯甲胺与乙酸组合被确认为一种强效催化剂,用于氧化吲哚与醛、丙酮或环酮的缩合反应。通过苯甲胺乙酸盐催化下的氧化吲哚与醛(或酮)的连续缩合反应以及随后由硼氢化钠进行的共轭还原,可以方便地在10毫摩尔规模上制备多种3-烷基氧化吲哚。