A ray of sunshine: The title reaction sequence using ethyl 2‐(3,4‐dihydroisoquinolin‐2(1H)‐yl)acetates with a series of electron‐deficient alkenes and alkynes provides rapid and efficient access to pyrrolo[2,1‐a]isoquinolines (see scheme; bpy=2,2′‐bipyridine, EWG=electron‐withdrawing group). The reaction offers a strategically new protocol for the direct and efficient construction of the core structure
A porphyrin-based COF promoted photocatalytic dipolar [3+2] cycloaddition reaction for pyrrolo[2,1-a]isoquinoline synthesis is reported. Various substituted pyrrolo[2,1-a]isoquinolines were obtained in moderate to good yields via the photocatalyticoxidative [3+2] cycloaddition reaction between tetrahydroisoquinolines and N-substituted maleimides under aerobic conditions at room temperature.
报道了一种基于卟啉的COF促进吡咯并[2,1- a ]异喹啉合成的光催化偶极[3+2]环加成反应。通过四氢异喹啉与N-取代马来酰亚胺在室温有氧条件下的光催化氧化[3+ 2 ]环加成反应,以中等至良好的收率获得了各种取代的吡咯并[2,1-a]异喹啉。