Methyl iodide → 5-(Hydroxymethyl)-3-(methylamino)-2-phenoxybenzene-1-sulfonamide

Participants

Reaction Steps

A mixture of 3-amino-4-phenoxy-5-sulfamylbenzyl alcohol (8.8 g; prepared as described in Example 2), methyl iodide (2.1 ml), sodium hydrogen carbonate (5.0 g) and hexamethylphosphoric triamide (45 ml) is stirred at 22°-25° C. for 18 hours. The mixture is then diluted with water (about 500 ml) to precipitate crude 3-methylamino-4-phenoxy-5-sulfamylbenzyl alcohol. After recrystallization from aqueous ethanol it is obtained with a melting point of 167°-168° C.

Provenance & Evidence