Dichloromethane → HCID 18942238, compound

Participants

Reaction Steps

With ice-cooling, methanesulfonyl chloride (3.9 ml, 50 mmol) was added dropwise to a mixture of 3-hydroxy-10-methylphenothiazine (10.9 g, 45 mmol), triethylamine (8.2 ml, 59 mmol) and dichloromethane (80 ml), and the mixture was stirred at room temperature for 1 hour. Water was added to the reaction mixture and the reaction product was extracted with chloroform. The extract was washed with a saturated sodium bicarbonate aqueous solution and saturated sodium chloride aqueous solution in that order, dried over anhydrous magnesium sulfate, and concentrated under a reduced pressure to give the title compound (8.09 g, 30.9 mmol, 69%) as yellow crystals.

Provenance & Evidence