Thieno(2,3-c)pyridine → thieno[2,3-c]pyridine-N-oxide

Participants

Reaction Steps

To a solution of 18 g of thieno[2,3-c]pyridine in 300 ml of chloroform was added 33 g of 3-chloroperbenzoic acid portionwise with ice-cooling over a period of 1 hour, and the mixture was stirred for further 1 hour under the same conditions. The reaction mixture was diluted with 400 ml of chloroform, washed successively with water, a saturated sodium carbonate solution and saturated saline, and dried over anhydrous magnesium sulfate. The drying agent was removed by filtration, and the solvent was removed under reduced pressure to give 16.6 g of thieno[2,3-c]pyridine-N-oxide as a white powder.

Provenance & Evidence