64500-11-4Relevant articles and documents
Practical synthesis of 4H-pyrido[1, 2-a]pyrimidin-4-ones using ethylene glycol as a promoting solvent
Hussain, Mustafa,Liu, Jianhui
supporting information, (2020/08/13)
A simple and useful protocol leading to different 4H-pyrido[1, 2-a] pyrimidin-4-ones have been established by cyclization of various 2-amino pyridines with β-oxo ester or alkynoate. The use of ethylene glycol was demonstrated to facilitate this condensati
Solvent-free synthesis of 4H-Pyrido[1,2-a]pyrimidin-4-ones catalyzed by BiCl3: A green route to a privileged backbone
Roslan, Irwan I.,Lim, Qiu-Xuan,Han, Aijuan,Chuah, Gaik-Khuan,Jaenicke, Stephan
supporting information, p. 2351 - 2355 (2015/04/22)
An extensive array of 4H-pyrido[1,2-a]pyrimidin-4-ones have been synthesized from commercially available 2-aminopyridines and β-oxo esters with excellent yields under solvent-free conditions. The reaction, catalyzed by cheap and nontoxic BiCl3,