DPTA-catalyzed one-pot regioselective synthesis of polysubstituted pyridines and 1,4-dihydropyridines
作者:Jianjun Li、Ping He、Chuanming Yu
DOI:10.1016/j.tet.2012.03.104
日期:2012.6
and amines via a one-pot multi-component reaction. The advantages of this protocol include excellent yields, environmentally benign source of nitrogen, mild reaction conditions, and simple manipulation. Different source of nitrogen like urea, thiourea, inorganic ammonium salts, and organic amines were studied. In addition, a novel way was developed for the conversion of primary aliphatic amines into
以三氟甲磺酸二苯铵(DPAT)为催化剂,通过一锅多组分反应在无溶剂条件下由醛,酮和胺制备高度取代的吡啶和二氢吡啶。该方案的优点包括极高的收率,对环境有益的氮源,温和的反应条件和简单的操作。研究了氮的不同来源,例如尿素,硫脲,无机铵盐和有机胺。另外,开发了一种新颖的方法,用于将伯脂族胺转化为醇。