An efficient synthesis of pyrazolo[3,4-b]quinolin-5(6H)-one derivatives in ionic liquid
作者:Da-Qing Shi、Fang Yang
DOI:10.1002/jhet.538
日期:2011.3
A series of 4‐aryl‐3,7,7‐trimethyl‐1‐phenyl‐7,8‐dihydro‐1H‐pyrazolo[3,4‐b]quinolin‐5(6H)‐ones were synthesized via the three‐component reaction of aromatic aldehydes, 5,5‐dimethyl‐1,3‐cyclohexandione and 5‐amino‐3‐methyl‐1‐phenylpyrazole in ionic liquid without using any catalyst. This protocol has the advantages of easier work‐up, milder reaction conditions, short reaction time, and environmentally
通过这三个反应合成了一系列的4-芳基-3,7,7-三甲基-1-苯基-7,8-二氢-1H-吡唑并[3,4- b ]喹啉-5(6 H)-。芳香醛,5,5-5-二甲基-1,3-环己二酮和5-氨基-3-甲基-1-苯基吡唑在离子液体中的组分反应,无需使用任何催化剂。该方案的优点是易于操作,反应条件温和,反应时间短和对环境有益的程序。J.杂环化学。(2011)。