在此,我们报道了使用石墨氮化碳(gC 3 N 4)作为光催化剂,吲哚与重氮化合物的非均相光催化C-H烷基化反应。该反应操作简单,条件温和。此外,发现该催化剂在五个反应循环后稳定且可重复使用。光化学反应通过碳自由基的中介进行,碳自由基是通过可见光促进的质子耦合电子转移(PCET)过程从重氮化合物产生的。
ethenetricarboxylate derivatives 1 with 2-ethynylanilines has been examined. Reaction of 1,1-diethyl 2-tert-butyl ethenetricarboxylate 1b with 2-(trimethylsilylethynyl)aniline substrates in the presence of Zn(OTf)2 gave bridged quinolinederivatives in 43−85% yield. The reaction of 1b with 2′-aminoacetophenone also gave the bridged quinolinederivative in 41% yield. Thermal reaction of bridged quinolines (180−190