By virtue of methylenecyclopropanes as versatile reagents, the chemoselective C₃−H alkylation, C₂−H dienylation and cyclopropylation of indoles have been realized through TFA-prompted/Rh(III)-catalyzed transformations. Sequential two-fold C−H functionalization and diversified derivatizations further strengthened the synthetic utility of the developed protocol for the construction of high-functionalized indoles.

中文翻译：

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TFA-Prompted/Rh(III)-催化的化学选择性 C3- 或 C2-H 吲哚与亚甲基环丙烷官能化

凭借亚甲基环丙烷作为多功能试剂，吲哚的化学选择性 C ₃ -H 烷基化、C ₂ -H 二烯化和环丙基化已通过 TFA 促进/Rh(III) 催化的转化实现。连续的二重 C−H 功能化和多样化的衍生化进一步加强了所开发的高功能化吲哚构建方案的综合效用。