作者:Ning-Xin Guo、Ji-Bao Xia、Yijin Su
DOI:10.1055/a-2050-6508
日期:——
A 2-pyridyl-alkylation of benzyne using N-alkylpyridinium salts has been developed under either photochemical or thermal conditions. This metal-free dicarbofunctionalization of benzyne undergoes a de Mayo-type process including cascade dearomative [3+2] cycloaddition and rearomative ring-opening reaction. An electron-deficient N-cyclic alkyl group was necessary. A formal ortho-C–H arylation of pyridine
已经在光化学或热条件下开发了使用N-烷基吡啶鎓盐对苯炔进行 2-吡啶基-烷基化。这种苯炔的无金属双碳官能化经历了 de Mayo 型过程,包括级联脱芳烃 [3+2] 环加成和再芳烃开环反应。缺电子的N-环状烷基是必需的。已经实现了吡啶的正式邻位-C-H芳基化。