作者:José Daniel Figueroa-Villar、Elizabete Rangel Cruz、Nedina Lucia dos Santos
DOI:10.1080/00397919208021101
日期:1992.4
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.