Reaction parameters were further optimized in order to achieve a single-product procedure. Plausible routes for reaction progress were investigated and it was proved that the reaction goes through regioselective condensation yielding an interesting V-shaped structure. Spectral data of all products under study were used to elucidate the chemical structure and X-ray structure analysis was performed to unambiguously
使用简单的一锅法合成了许多新的稳定的
甲烷苯并[7,8][1,3]二氧代[4,5 - d ]
嘧啶-1,3(2 H )-二酮衍
生物( 4a-l )具有可观的效率。进一步优化反应参数以实现单一产品程序。研究了反应进程的合理途径,并证明该反应通过区域选择性缩合产生有趣的 V 形结构。所研究的所有产品的光谱数据用于阐明
化学结构,并进行 X 射线结构分析以明确证明4c的拟议结构。