反应详情

To a solution of nBu3P (47 μL, 0.19 mmol) in dry THF (2 mL), at 0° C. (ice/water bath) under nitrogen was added DIAD (37 mL, 0.19 mmol). After stirring for 10 minutes 1-{6-[4-(trifluoromethyl)phenyl]-2-pyridinyl}-1-pentanol (50 mg, 0.16 mmol) was added, followed after another 20 minutes by ethyl 2-(4-hydroxy-2-methylphenoxy)-2-methylpropanoate (39 mg, 0.16 mmol). The mixture was then allowed to warm to rt over 16 hours and was then reduced under vacuum and the residue partitioned between EtOAc and water. The layers were separated and the organic layer washed with water (2×) then brine, dried (Na2SO4) and reduced to give a brown gum. Purification by Biotage™ chromatography (silica, 40 g cartridge) eluting with cyclohexane:EtOAc (19:1) afforded the title compound as a colourless gum (9 mg).

1. additionwas added
2. customthe residue partitioned between EtOAc and water
3. customThe layers were separated
4. washthe organic layer washed with water (2×)
5. dry with materialbrine, dried (Na2SO4)
6. customto give a brown gum
7. customPurification by Biotage™ chromatography (silica, 40 g cartridge)
8. washeluting with cyclohexane:EtOAc (19:1)