反应详情

LDA (0.757 mL, 1.362 mmol) was added to tetrahydrofuran (4 mL) at −78° C. After 15 minutes at −78° C., a solution of the product of Step 4 (150 mg, 0.454 mmol) in tetrahydrofuran (4 mL) was added dropwise. After 30 minutes at −78° C., a solution of 1-{[tert-butyl(dimethyl)-silyl]oxy}acetone (0.110 mL, 0.568 mmol) in tetrahydrofuran (4 mL) was added dropwise at −78° C. The reaction mixture was allowed to warm to ambient temperature. After 1 hour, the reaction mixture was quenched with saturated ammonium chloride, diluted with ethyl acetate, washed with brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by column chromatography on silica gel, eluting with ethyl acetate and hexanes to afford 1-{[tert-butyl(dimethyl)silyl]oxy}-2-(5-{3-[(4-cyclopropyl-5-fluoropyrimidin-2-yl)amino]-5-fluorophenyl}-1,3-thiazol-2-yl)propan-2-ol (150 mg, 0.29 mmol, 64%). MS ESI: [M+H]+ m/z 519.2.

1. waitAfter 30 minutes at −78° C.
2. waitAfter 1 hour
3. customthe reaction mixture was quenched with saturated ammonium chloride
4. additiondiluted with ethyl acetate
5. washwashed with brine
6. dry with materialdried over magnesium sulfate
7. filtrationfiltered
8. concentrationconcentrated
9. customThe residue was purified by column chromatography on silica gel
10. washeluting with ethyl acetate and hexanes