A facile and general acid-catalyzed deuteration at methyl groups of N-heteroarylmethanes
作者:Min Liu、Xue Chen、Tieqiao Chen、Shuang-Feng Yin
DOI:10.1039/c7ob00062f
日期:——
A facile and general Brønsted acid-catalyzed deuteration at the methyl group of N-heteroarylmethanes was achieved through a dearomatic enamine intermediate under relatively mild reaction conditions. Both 2-methyl and 4-methyl groups in quinolines were deuterated with high deuterium incorporation. Pyridines, benzo[d]thiazoles, indoles and imines including these clinical drugs were also deuterated efficiently
在相对温和的反应条件下,通过脱芳族烯胺中间体在N-杂芳基甲烷的甲基上进行了简便而普遍的布朗斯台德酸催化的氘代反应。喹啉中的2-甲基和4-甲基都通过高氘掺入氘化。包括这些临床药物在内的吡啶,苯并[ d ]噻唑,吲哚和亚胺也可以在甲基上有效地氘化。该反应可以大规模(500mmol)进行,显示出其用于大规模合成的良好潜力。