Synthesis of Indeno[1,2-b]indole Derivatives through One-Pot Sequential or Two-Step Iodine-Catalyzed C-O Activation and Palladium-Catalyzed C-H Functionalization

Cu(OTf)2-catalyzed C3 aza-Friedel-Crafts alkylation of indoles with N,O-acetals

An efficient approach to access functionalized indole derivatives has been developed through Cu(OTf)₂-catalyzed C3 aza-Friedel-Crafts alkylation of substituted indoles 5a-5m, N-methyl-pyrrole with linear N,O-acetals 4a-4l. As a result, a series of C3 amide aza-alkylated indole derivatives 6a-6ag and 7 were synthesized in moderate to excellent yields.

A Tandem Nucleophilic Aminopalladation and Carbene Insertion Sequence for Indole Fused Polycycles

An efficient tandem nucleophilic aminopalladation and carbene insertion sequence is described for the synthesis of indole fused polycycles. The reaction process provides a variety of substituted indeno[1,2-b]indoles in up to 99% yields.

Catalytic C3 aza-alkylation of indoles

The aza-alkylation reaction at position 3 of the indole scaffold allows the introduction of a differently substituted aminomethyl group, with the formation of a stereogenic centre. Critical summary of 2000–2019 meaningful papers.

A tetra-n-butylammonium iodide mediated reaction of indoles with Bunte salts: efficient 3-sulfenylation of indoles under metal-free and oxidant-free conditions

A highly efficient TBAI triggered procedure for 3-sulfenylation of indoles with Bunte Salts under metal-free and oxidant-free conditions is demonstrated.