反应详情

To a solution of 2-{2-[7-chloro-3-(3,5-dimethylphenyl)-6-(3-hydroxy-propyl)-2-oxo-1,2-dihydroquinolin-4-yloxy]-ethyl}-piperidine-1-carboxylic acid tert-butyl ester (176 mg in 3.0 mL methylene chloride) was added 20 mg powdered 4Å sieves, 73 mg of 4-methylmorpholine-N-oxide, followed by 11 mg tetrapropylammonium perruthenate(VII) and the mixture stirred at room temperature. After 3 hours, the solvent was removed in vacuo and the crude aldehyde product resolvated in a mixture of tert-butanol (2 mL) and sodium phosphate (1 mL of a 1.25M solution). To this was added 1.86 mL of a 1M aqueous solution of potassium permanganate. After 30 minutes, the mixture was extracted with ethyl acetate, dried over sodium sulfate and purified by flash chromatography on silica gel (hexane:ethyl acetate, 1:1; then methylene chloride:methanol, 90:10) to give the title compound (107 mg).

1. customthe solvent was removed in vacuo
2. additionthe crude aldehyde product resolvated in a mixture of tert-butanol (2 mL) and sodium phosphate (1 mL of a 1.25M solution)
3. additionTo this was added 1.86 mL of a 1M aqueous solution of potassium permanganate
4. waitAfter 30 minutes
5. extractionthe mixture was extracted with ethyl acetate
6. dry with materialdried over sodium sulfate
7. custompurified by flash chromatography on silica gel (hexane