1-Methyl-1H-indole-2-carbonyl chloride → N-(2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-methyl-1H-indole-2-carboxamide

Participants

Reaction Steps

To a solution of 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (4.01 mmol, 1 g) and 4-dimethylaminopyridine (0.401 mmol, 0.049 g) in dichloromethane (5 ml) and pyridine (5 ml) was added 1-methyl-1H-indole-2-carbonyl chloride (5.22 mmol, 1.010 g) and this solution was stirred at room temperature for four days. The reaction mixture was concentrated and coevaporated with toluene. To the residue dichloromethane and water were added. The organic layer was separated, dried (sodium sulfate) and concentrated in vacuo. Purification using flash chromatography (silica gel, dichloromethane) yielded N-(2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-methyl-1H-indole-2-carboxamide (1.5 g).

Provenance & Evidence