Phenol → HCID 20143059, compound

Participants

Reaction Steps

To a stirred solution of 3,4-dihydro-4,7-dimethyl-3-oxo-2H-1,4-benzothiazine (11.0 g) in methylene chloride (50 ml), sulfuryl chloride (4.8 ml) is added under ice-cooling. After the addition, the mixture is stirred for 15 minutes under ice-cooling. Phenol (7.0 g) is added to the mixture, and the mixture is stirred for 45 minutes and concentrated in vacuo. Ether is added to the residue and the separated crystals are collected by filtration to give 11.3 g (69.4%) of the titled compound.

Provenance & Evidence