One-pot Green Synthesis for Pyrimido[4,5-d]pyrimidine Derivatives
2007 ◽
Vol 62
(5)
◽
pp. 732-736
◽
Keyword(s):
One Pot
◽
Abstract Water has been used efficiently as a solvent for the reaction of barbituric acid, aldehyde and urea or thiourea to yield pyrimido[4,5-d]pyrimidines. This environmentally benign procedure leads to high yields of products of greater purity in a single step using water.