Visible-light-induced, autopromoted nickel-catalyzed three-component arylsulfonation of 1,3-enynes and mechanistic insights
作者:Duo-Duo Hu、Qian Gao、Jing-Cheng Dai、Ru Cui、Yuan-Bo Li、Yuan-Ming Li、Xiao-Guo Zhou、Kang-Jie Bian、Bing-Bing Wu、Kai-Fan Zhang、Xi-Sheng Wang、Yan Li
DOI:10.1007/s11426-021-1193-5
日期:2022.4
3-enynes in the absence of photocatalyst is reported. This methodology exhibited mild conditions, broad scope and high efficiency, and its synthetic utility has been demonstrated by a concise total synthesis of sulfone-containing drug molecule. Detailed mechanistic studies indicated that this light induced nickel catalysis is autopromoted by in situ produced allene, which plays a key role as co-ligand in
报道了在没有光催化剂的情况下,1,3-烯炔的光诱导、镍催化的三组分芳基磺化反应。该方法条件温和、范围广、效率高,其合成效用已通过含砜药物分子的简明全合成得到证明。详细的机理研究表明,这种光诱导镍催化是由原位产生的丙二烯自动促进的,丙二烯在 LMCT 过程的光活性激发态 Ni(I) 物种中作为共配体发挥关键作用。对这种光诱导镍催化循环的详细阐述可能会为开发新的催化活性和建立新的方法提供一些启示。