Microwave-assisted annulation for the construction of pyrido-fused heterocycles and their application as photoluminescent chemosensors
作者:Ei Seul Yun、Muhammad Saeed Akhtar、Sonaimuthu Mohandoss、Yong Rok Lee
DOI:10.1039/d2ob00257d
日期:——
3-formylchromones to yield functionalized 11H-pyrido[2,1-b]quinazolin-11-one and pyrido[1,2-a] benzimidazole derivatives. This approach is successfully extended to the construction of various pyrazolo[4,3-d]pyrido[1,2-a]pyrimidin-10(1H)-ones. The present approach is complementary to the existing synthetic methodologies and offers a rapid and facile approach with a broad substrate scope, good yields, catalyst-free
开发了一种用于制备具有生物学意义的吡啶并稠合喹唑啉酮和吡啶并[1,2- a ]苯并咪唑的无催化剂微波辅助环化方案。该反应涉及各种喹唑啉酮或苯并咪唑与 3-甲酰基色酮的 [3 + 3] 环化,生成官能化的 11 H-吡啶并[ 2,1- b ]喹唑啉-11-酮和吡啶并[1,2- a ]苯并咪唑衍生物。该方法成功地扩展到构建各种吡唑并[4,3 - d ]pyrido[1,2 - a ]pyrimidin-10(1 H)-那些。本方法是对现有合成方法的补充,并提供了一种快速简便的方法,具有广泛的底物范围、良好的收率、无催化剂条件和高官能团耐受性。最佳合成化合物也可用作“开关”光致发光探针,用于选择性检测 Fe 3+和 Ag +金属离子。