Abstract
2H-Chromeno[2,3-d]-pyrimidine-2,4(3H)-diones were prepared directly from barbituric acid and salicylaldehydes or by thermal cyclization of the condensation product of barbituric acid and 6-bromopiperonal.
Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 22, 1992 - Issue 8
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