Dimethylformamide → 3-acetoxy-10-acetyl-4-chloro-10H-phenothiazine

Participants

Reaction Steps

To 1.1 g of 3-acetoxy-4-chloro-10H-phenothiazine (see Example 4) was added acetyl chloride (7 ml), DMF (5 ml) and potassium tert-butoxide (0.42 g). The reaction mixture was stirred at ambient temperature for 1 hour and then, poured in water. The resulting precipitate was filtered and purified by chromatography on silica gel to give (1.08 g) 3-acetoxy-10-acetyl-4-chloro-10H-phenothiazine (m.p. 155° C.).

Provenance & Evidence