Triethylamine → HCID 21714287, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 7-(2-hydroxyethoxy)-4-methyl-1H-indole-2-carboxylate (1.10 g, 4.18 mmol), triethylamine (0.93 g, 9.19 mmol) and dichloromethane (30 ml) was cooled to -10° C., after which methanesulfonyl chloride (0.57 g, 5.01 mmol) was added dropwise with stirring at -10° C. After completion of the dropwise addition, the resulting mixture was stirred at -10° C. for another 2 hours and the reaction mixture was poured into ice water, followed by extraction with chloroform (three times). The extract solution was washed successively with a saturated aqueous ammonium chloride solution, a saturated aqueous sodium hydrogencarbonate solution and a 5% aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain ethyl 7-(2-methanesulfonyloxyethoxy)-4-methyl-1H-indole-2-carboxylate. This compound was used in the subsequent reaction without further purification.

Provenance & Evidence