作者:R. Chioua、F. Benabdelouahab、M. Chioua、R. Martínez-Alvarez、A. Fernández
DOI:10.3390/70700507
日期:——
The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedicarboxylate leads to 2,4-diphenylquinazoline-6,7-dicarboxylate (6). 2,4-Diphenylfuro[3,4-g]quinazoline-6,8-dione (7) is also obtained by basic hydrolysis of compound 6, followed by the closure of the resulting diacid in acetic anhydride.
2,4-二苯基嘧啶邻位醌二甲烷和乙炔二羧酸二甲酯之间的 [4+2] 环加成反应生成 2,4-二苯基喹唑啉-6,7-二羧酸酯 (6)。2,4-二苯基呋喃[3,4-g]喹唑啉-6,8-二酮(7)也可通过化合物6的碱性水解得到,然后将所得二酸封闭在乙酸酐中。