Bromine → 7-(Hydroxymethyl)-N-mesityl-1,3-benzothiazol-2-amine

Participants

Reaction Steps

To 0.25 g (0.83 mmol) of 1-(3-hydroxymethylphenyl)-3-mesitylthiourea in 5 mL of glacial acetic acid was added 47 μL (0.91 mmol) of bromine. The reaction was stirred for 5 min and concentrated in vacuo to give the title compound and its regioisomer as their O-acetates. The mixture was stirred in methanol over potassium carbonate for 1 h. The mixture was concentrated in vacuo, slurried in dichloromethane and filtered. The filtrate was concentrated and purified by flash chromatography eluting with a 33-66% ethyl acetate/hexanes gradient mixture to give 0.070 g (28%) of the title compound as a white solid.

Provenance & Evidence