An Efficient One-Pot Synthetic
Method for 2,4-Disubstituted 7-Arylpyrido[4,3-<i>d</i>]pyrimidines from 2,4-Disubstituted
6-(Arylethynyl)pyrimidine-5-carbaldehydes and <i>tert</i>-Butylamine
作者:Inga Cikotiene、Marius Morkunas、Simonas Rudys、Rita Buksnaitiene、Algirdas Brukstus
DOI:10.1055/s-0028-1083500
日期:——
Unexpected thermal cyclization of 2,4-disubstituted 6-(aryl-ethynyl)pyrimidine-5-carbaldehydes with tert-butylamine proceeded to give 2,4-disubstituted 7-arylpyrido[4,3-d]pyrimidines in good yields in the absence of any catalysts. The intermediate compounds were isolated and possible mechanism of the reactions is discussed.
2,4-二取代的6-(芳基-乙炔基)嘧啶-5-甲醛与叔丁胺发生意外的热环化,在不存在的情况下以良好的收率得到2,4-二取代的7-芳基吡啶并[4,3-d]嘧啶任何催化剂。分离了中间体化合物并讨论了可能的反应机理。