The latest developments in the field of electrophilic C-H borylation reactions of arenes and heteroarenes without transition metals are briefly overviewed, with a particular emphasis on the latest advances enabling the highly regioselective C-H borylations of indoles and indolines using borylation template reagents.
Keywords: Borenium Ions; C−H Borylations; Directed Borylations; Electrophilic Substitutions; Indoles.
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