反应详情

300 mg of tert-butyl 2-((1R,3S)-3-hydroxymethylcyclohexylmethoxy)-2-methylpropionate are dissolved in 10 ml of MTBE, and 50 mg of sodium hydride (60% in mineral oil) are added. After gas evolution ceases, 600 mg of 5-ethyl-4-iodomethyl-2-(4-trifluoromethylphenyl)oxazole are added, and the suspension is heated under reflux overnight. After addition of water and MTBE, the phases are separated, and the organic phase is washed with saturated sodium chloride solution, dried over MgSO4 and concentrated. The residue is purified by preparative HPLC, resulting in 190 mg of tert-butyl 2-{(1S,3R)-3-[5-ethyl-2-(4-trifluoromethylphenyl)oxazol-4-ylmethoxymethyl]-cyclohexylmethoxy}-2-methylpropionate as yellow oil.

1. temperaturethe suspension is heated
2. temperatureunder reflux overnight
3. customthe phases are separated
4. washthe organic phase is washed with saturated sodium chloride solution
5. dry with materialdried over MgSO4
6. concentrationconcentrated
7. customThe residue is purified by preparative HPLC
8. customresulting in 190 mg of tert-butyl 2-{(1S,3R)-3-[5-ethyl-2-(4-trifluoromethylphenyl)oxazol-4-ylmethoxymethyl]-cyclohexylmethoxy}-2-methylpropionate as yellow oil