反应详情

4-[(1E,3E)-4-[trans-5-[[(1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]thio]-1,3-dioxan-2-yl]-1,3-butadienyl]-3-fluorobenzonitrile (4.90 g, 9.03 mmol) described in Reference example 1 and 1,1′-carbonyldiimidazole (1.53 g, 9.44 mmol) were dissolved in dichloromethane (20 ml). To the mixture was added sodium hydride (55% dispersion in mineral oil; 10 mg, 2.3×10−4 mol), and the reaction mixture was heated under reflux for 3 hours with stirring. After cooling, a phosphate buffer solution (pH 7.4) was added thereto, and the product was extracted with ethyl acetate. The organic layer was washed with an aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was subjected to chromatography on a silica gel (120 g) column (eluent; ethyl acetate:hexane=1:1˜1:0) to afford the title compound (4.00 g, 70% yield) as a colorless amorphous solid.

1. temperaturethe reaction mixture was heated
2. temperatureunder reflux for 3 hours
3. temperatureAfter cooling
4. extractionthe product was extracted with ethyl acetate
5. washThe organic layer was washed with an aqueous solution of sodium chloride
6. dry with materialdried over anhydrous magnesium sulfate
7. distillationthe solvent was distilled off under reduced pressure