Formic Acid → HCID 59570976, compound

Participants

Reaction Steps

To a solution of 2-(2-{[(allyloxy)carbonyl]amino}-1,3-thiazol-4-yl)-2-hydroxypropyl acetate (790 mg) in THF (10 mL) were added n-butylamine (0.52 mL), formic acid (0.20 mL), and tetrakistriphenylphosphine palladium (33 mg) at room temperature, followed by stirring at room temperature for 30 minutes. To the reaction mixture was added 1 M hydrochloric acid (30 mL) at room temperature, followed by extraction with ethyl acetate. The aqueous layer was adjusted to pH 9 using saturated aqueous sodium bicarbonate, followed by extraction with a solvent (ethyl acetate:isopropyl alcohol=3:1, 100 mL×3). The organic layer was washed with saturated brine and dried over anhydrous magnesium sulfate. After concentration, 2-(2-amino-1,3-thiazol-4-yl)-2-hydroxypropyl acetate (261 mg) was obtained as a pale yellow oily substance. The obtained pale yellow oily substance was subjected to optical resolution with chiral column chromatography (Product Name: Chiralcel OJ-H, hexane:ethanol:diethylamine=30:70:0.1) to obtain optical active products of 2-(2-amino-1,3-thiazol-4-yl)-2-hydroxypropyl acetate at a first peak and a second peak in yields of 37% and 25%, respectively (>95% ee) (absolute arrangement was not determined).

Provenance & Evidence