Isoamylamine → HCID 57118135, compound

Participants

Reaction Steps

3-Methylbutylamine (1.74 cc) is added to a solution of 10-{1-[(2S)-2-hydroxymethyl-1-pyrrolidinyl]-2-propyl}-2-phenothiazinecarbothioamide, L series (1.20 g) in absolute ethanol (20 cc). The mixture is brought to 150° C. for 16 hours. The reaction mixture is concentrated to dryness under reduced pressure (30 mm Hg; 4 kPa) at 40° C. The residue is diluted with ethyl acetate (100 cc), washed with distilled water (2×50 cc), dried over magnesium sulphate and then concentrated to dryness under reduced pressure (30 mm Hg; 4 kPa) before being purified by chromatography on a column (height: 14.5 cm; diameter: 2.8 cm) of silica gel (0.04-0.06 mm) with a slight excess pressure of nitrogen (40 kPa) eluting with mixtures of cyclohexane and ethyl acetate in proportions (by volume) of 65:35 (1.2 liters) and 35:65 (1.2 liters), collecting 60-cc fractions. Fractions 5 to 13 are combined and evaporated under reduced pressure (30 mm Hg; 4 kPa) at 40° C. to give 10-{1-[(2S)-2-hydroxymethyl-1-pyrrolidinyl]-2-propyl}-N-(3-methylbutyl)-2-phenothiazinecarbothioamide, L series (0.64 g) in the form of a yellow resin.

Provenance & Evidence