Fumaric Acid → HCID 15925348, compound

Participants

Reaction Conditions

Reaction Steps

Mercuric acetate (0.80 g) is added to a solution of N-(3-fluorobenzyl)-10-[(2RS)-1-(1-pyrrolidinyl)-2-propyl]-2-phenothiazinecarbothioamide neutral fumarate (1.30 g) in acetic acid (20 cc), and the mixture obtained is stirred for 20 hours at a temperature in the region of 20° C. The black suspension obtained is filtered on sintered glass plugged with celite and the yellow filtrate is concentrated under reduced pressure (30 mm Hg; 4 kPa) at 40° C. The residue is taken up with ethyl acetate (100 cc) and the organic phase is washed successively with normal sodium hydroxide (2×20 cc) and distilled water (2×20 cc) and with aqueous sodium chloride solution (20 cc) and dried over magnesium sulphate. After filtration, the yellow filtrate is concentrated under reduced pressure (30 mm Hg; 4 kPa) at 40° C. and a crude yellow oil (0.90 g) is thereby obtained. This residue is dissolved in hot ethanol (3 cc) and treated with fumaric acid (0.25 g) dissolved in ethanol (2 cc). After 4 hours' cooling to 4° C., the crystallized solid is separated by filtration, washed with cold ethanol (2×5 cc) and then dried at 50° C. under reduced pressure (5 mm Hg; 0.7 kPa) to give N-(3-fluorobenzyl)-10-[(2RS)-1-(1-pyrrolidinyl)-2-propyl]-2-phenothiazinecarboxamide neutral fumarate (0.7 g), m.p. 165° C.

Provenance & Evidence