A new one-pot three-component condensation reaction for the synthesis of 2,3,4,6-tetrasubstituted pyridines
作者:Mark C. Bagley、James W. Dale、Justin Bower
DOI:10.1039/b203900a
日期:2002.7.25
condensation of a beta-ketoester, ammonia and an alkynone in the presence of a Brønsted or Lewis acid or Amberlyst 15 ion exchange resin provided 2,3,6-trisubstituted or 2,3,4,6-tetrasubstituted pyridines directly in good yield and with total regiocontrol.
在Brønsted或Lewis酸或Amberlyst 15离子交换树脂存在下,β-酮酸酯,氨和炔酮的一锅三组分缩合可提供2,3,6-三取代或2,3,4,6-直接取代四取代吡啶,收率高,且具有区域控制能力。