Potassium Carbonate → 10-Hexyl-3,7-dimethoxy-phenothiazine

Participants

Reaction Steps

A suspension of 15.0 g (57.8 mmol) of 3,7-dimethoxyphenothiazine, 31.9 g (0.231 mmol) of powdered potassium carbonate, 61.29 g (0.289 mol) of 1 -iodohexane and 1.6 g (5.0 mmol) of tris-[2-(2-methoxymethoxy)ethyl]amine was heated to 110° for 64 hours. The working up was effected analogously to that described in Example 4.1.1.b. After chromatography on silica gel with ethyl acetate/hexane (1:4) 18.33 g (91.8%) of 10-hexyl-3,7-dimethoxy-phenothiazine were obtained as a brownish oil.

Provenance & Evidence