Acetic Acid → N-propyl-10-[1-(1-pyrrolidinyl)-2-propyl]-2-phenothiazinecarboxamide

Participants

Reaction Steps

Mercuric acetate (0.38 g) is added with stirring to a solution of N-propyl-10-[(2RS)-1-(1-pyrrolidinyl)-2-propyl]-2-phenothiazinecarbothioamide neutral fumarate (0.6 g) in acetic acid (10 cc), and stirring is continued for 4 hours 30 minutes at a temperature in the region of 20° C. The black reaction mixture is diluted with distilled water (25 cc) and ethyl acetate (50 cc) and then filtered and alkalinized with stirring with 4N aqueous sodium hydroxide solution to pH 13. After settling has taken place, the organic phase is separated and the aqueous phase is extracted with ethyl acetate (20 cc). The combined organic phases are washed successively with saturated aqueous sodium chloride solution (50 cc). After drying over magnesium sulphate, filtration and concentration to dryness under reduced pressure (30 mm Hg; 4 kPa) at 40° C., N-propyl-10-[(2RS)-1-(1-pyrrolidinyl)-2-propyl]-2-phenothiazinecarboxamide (0.43 g) is obtained in the form of a yellow oil.

Provenance & Evidence