Rapid, clean and efficient one-pot synthesis of thiopyrano[2,3-b]quinolines via domino Michael addition/cyclization reactions
作者:Bhawana Singh、Atish Chandra、Mrityunjaya Asthana、Radhey M. Singh
DOI:10.1016/j.tetlet.2012.04.032
日期:2012.6
Rapid and efficient one-pot synthesis of thiopyrano[2,3-b]quinolines is described from the reaction of 3-formyl-quinoline-2-thiones with acrylonitrile using economical organic base Et3N at room temperature. The reaction proceeded smoothly via domino Michael addition/cyclization reactions and did not require dry solvent, inert atmosphere and column chromatography purifications.
从3-甲酰基-喹啉-2-硫酮与丙烯腈在室温下使用经济的有机碱Et 3 N反应,可以快速高效地一锅合成噻吩并[2,3- b ]喹啉。该反应通过多米诺骨牌迈克尔加成/环化反应顺利进行,不需要干燥溶剂,惰性气氛和柱色谱法纯化。