论文部分内容阅读
The title compound ethyl 2-(2-amino-3-ethoxycarbonyl-4H-benzopyran-4-yl) cyanoacetate(C17H18N2O5, Mr=330.33) was obtained by the reaction of salicylaldehyde with ethyl cyanoacetate in DMF at room temperature catalyzed by KF-Al2O3. The crystal is monoclini