AbstractWe described here a simple and metal‐free protocol to synthesize [1,2,3]triazolo[1,5‐a]quinoline 3‐carboxamides through a two‐step synthetic strategy, in which the first step uses organocatalysis (10 mol % of diethylamine or 1,8‐diazabicyclo[5.4.0]undec‐7‐ene, while the second step involves the use of inorganic base (1.2 or 0.1 equiv. of potassium hydroxide). These reactions were performed betweenβ‐keto amides ando‐carbonyl phenylazides in dimethylsulfoxide as solvent at 70 °C for 2 h. The synthetic protocol is ample, which thirteen examples of secondary [1,2,3]triazolo[1,5‐a]quinoline 3‐carboxamides were synthesized ranging from good to excellent yields (63‐96 %), and six different tertiary [1,2,3]triazolo[1,5‐a]quinolines 3‐carboxamides were obtained ranging from moderate to good yields (48–76 %).
摘要 我们在此描述了一种通过两步合成策略合成[1,2,3]三唑并[1,5-a]喹啉 3-羧酰胺的简单无金属方案,其中第一步使用有机催化(10 mol % 的二乙胺或 1,8-二氮杂双环[5.4.0]十一-7-烯),而第二步涉及使用无机碱(1.2 或 0.1 等量的氢氧化钾)。这些反应是在β-酮酰胺和邻羰基苯基氮化物之间进行的,以二甲基亚砜为溶剂,温度为 70 ℃,反应时间为 2 小时。合成方案非常充分,其中合成了 13 例二级[1,2,3]三唑并[1,5-a]喹啉 3-羧酰胺,收率从良好到极佳(63-96%)不等,还获得了 6 种不同的三级[1,2,3]三唑并[1,5-a]喹啉 3-羧酰胺,收率从中等到良好(48-76%)不等。