Brønsted acid-catalyzed metal- and solvent-free quinoline synthesis from<i>N</i>-alkyl anilines and alkynes or alkenes
作者:Waqar Ahmed、Sheng Zhang、Xiaoqiang Yu、Yoshinori Yamamoto、Ming Bao
DOI:10.1039/c7gc03175k
日期:——
Brønsted acid-catalyzed cyclization reactions of N-alkyl anilines with alkynes or alkenes in the presence of oxygen gas as an oxidant under metal- and solvent-free conditions are described. Various quinoline derivatives are obtained in satisfactory to excellent yields. Different groups, such as methyl, fluoro, chloro, bromo, methoxy, and ester linked on benzene rings, are tolerated under optimized
描述了在无金属和无溶剂条件下,在氧气作为氧化剂存在下,布朗斯台德酸催化的N-烷基苯胺与炔烃或烯烃的环化反应。以令人满意的至优异的产率获得了各种喹啉衍生物。在优化的反应条件下,可以容忍不同的基团,例如在苯环上连接的甲基,氟,氯,溴,甲氧基和酯。