radical-polar crossover process as a strategy, protocols dealing with the preparation of functionalized alkynylcyclopropanes have been successfully developed via the reactions of 1,3-enynes with alkyl radicals. In addition to redox-neutral photocatalysis, nickel catalysis with zinc as the reductant is also an alternative to enable reactions of 1,3-enynes with redox-active N-hydroxyphthalimide esters
在此,使用基于单电子转移还原的自由基-极性交叉过程作为策略,通过1,3-烯炔与烷基自由基的反应成功开发了制备功能化炔基
环丙烷的方案。除了氧化还原中性光催化,以
锌为还原剂的
镍催化也是使 1,3-烯炔与氧化还原活性N-羟基邻苯二甲
酰亚胺酯反应的替代方法。炔基
环丙烷的合成应用也得到了证明。