Metal‐Free Electrochemical [3+2] Cycloaddition between <i>α</i>‐Amino Carbonyls and Tosylmethyl Isocyanide <i>en route</i> to Substituted Imidazoles
作者:Samrat Mallick、Mrinmay Baidya、Suman De Sarkar
DOI:10.1002/adsc.202301071
日期:2024.1.30
essential requirement of transition metal catalysts and chemical oxidants. A wide variety of different functionalities are well tolerated under this reaction condition, contributing to the substrate scope and applicability. Several control experiments and cyclic voltammetry studies suggest an electro-oxidation triggered successive C−C and C−N bond formations followed by rapid aromatization for constructing
所建立的策略揭示了α-氨基羰基和甲苯磺酰甲基异氰化物(TosMIC)之间的无金属和介体的电化学[3+2]环加成方法,制造取代的咪唑支架。在这种环加成方法上实施电氧化还原条件消除了对过渡金属催化剂和化学氧化剂的基本要求。在这种反应条件下,多种不同的功能都具有良好的耐受性,从而扩大了底物的范围和适用性。一些对照实验和循环伏安研究表明,电氧化触发了连续的 C−C 和 C−N 键形成,随后快速芳构化以构建五元核心结构。