2-(2-异氰基苯基)-1 H-吲哚是一类同时具有芳族CH和吲哚N-H官能度的官能化异氰化物,首先用于选择性的酰亚胺化环化反应中。通过捕获亚氨基自由基或亚氨基钯选择性地获得具有生物重要性的6-芳基11 H-吲哚并[3,2- c ]喹啉和6-芳基吲哚并[1,2- c ]喹唑啉的支架。通过CH键和NH键的中间体。
Synthesis of 6-trifluoromethylindolo[1,2-c]quinazolines and related heterocycles using N-(2-iodophenyl)trifluoroacetimidoyl chlorides as starting material via C–H bond functionalization
A mild, two-step reaction for the synthesis of 6-trifluoromethylindolo[1,2-c]quinazolines from readily available indoles and N-(2-iodophenyl)trifluoroacetimidoyl chlorides via addition-elimination/arylation is described. An array of aza-fused trifluoromethylated heterocycles can be easily assembled via Friedel-Crafts reaction/C-H bond activation by this methodology.
Here we report a protocol to synthesize diversiform fluorinated isocryptolepine analogues with potential biological activities in one step via directed C-2 and C-3 dual C-H functionalization of indoles. We also attempted to take into account fluorinated imidoyl chlorides as a novel kind of synthons in the directed C-H functionalization reactions. As a result, a variety of fluorinated isocryptolepine analogues were obtained in up to 96% yield. Moreover, we conducted control experiments to disclose the reaction mechanism.