RSC Adv. 2023 Apr 11;13(17):11291-11295. doi: 10.1039/d3ra02031b. eCollection 2023 Apr 11.
Here we present an iridium catalysed C2-selective methylation of indoles using methyltrifluoroborate as a source of methyl group. The iridium catalyst selectively discriminates the indole C2 and C4 C-H bonds by coordination with a pivaloyl directing group.
PMID:37057266 | PMC:PMC10088075 | DOI:10.1039/d3ra02031b