Abstract A convenient and environmentally friendly solvent‐free procedure has been developed for the synthesis of polysubsituted pyridine derivatives. Compared with the classical reaction condition, this new synthetic method has the advantage of excellent yields, easy setup, and mild reaction conditions.
Kröhnke reaction in aqueous media: one-pot clean synthesis of 4′-aryl-2,2′:6′,2″-terpyridines
作者:Shujiang Tu、Runhong Jia、Bo Jiang、Junyong Zhang、Yan Zhang、Changsheng Yao、Shunjun Ji
DOI:10.1016/j.tet.2006.10.069
日期:2007.1
A clean aqueous Krohnke reaction process has been accomplished via a one-pot procedure of 2-acetylpyridine with aromatic aldehyde and ammonium acetate under microwave irradiation or conventional heating conditions. This method is convenient, economic and environmental friendly. (c) 2006 Elsevier Ltd. All rights reserved.