R. A. Coburn, Michael D. Taylor
May 1, 1982
Citations
0
Influential Citations
6
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Mesoionic imidazo[1,2-c]-pyrimidine-2,7-diones 1a-c, analogs of purine-2,8-dione, were prepared from 4-amino-l-methylpyrimidin-6-ones 6a-c. These mesoionic purinone analogs were found to exist predominantly in the C3-H tautomeric form 1 and to undergo hydrolytic ring-opening reactions to produce 2-(4-imidazol-idon-2-ylidenyl)acetamides. Reaction of 1c with dimethyl acetylene dicarboxylate produced triazacyclopent-[cd]indene 25 via 1,3-dipolar cycloaddition.