反应详情

温度

20 °C

To a 0° C. solution of 2-(3-methoxyphenyl)-2-hydroxypropyl 2-phenylethyl ether (498 mg., 1.74 mmole) in pyridine (2 ml.) is added dropwise phosphorous oxychloride (477 ml., 5.22 mmole). The reaction is allowed to warm to 20° C. over a 1.5 hour period. It is then stirred for 1.5 hours at 20° C. and then added to ether (150 ml.) and 15% sodium carbonate (100 ml.). The organic phase is separated and washed with 15% sodium carbonate (3 × 50 ml.), dried over magnesium sulfate and evaporated to an oil. The oil is dissolved in absolute ethanol (15 ml.), 10% palladium-on-carbon (100 mg.) added and the mixture stirred under one atmosphere of hydrogen gas. When hydrogen uptake ceases the reaction is filtered through diatomaceous earth and the filtrate evaporated to an oil. The oil is purified via preparation layer chromatography on silica gel plates, eluted twice with 6:1 pentane:ether to yield the title compound.

1. customThe organic phase is separated
2. washwashed with 15% sodium carbonate (3 × 50 ml.)
3. dry with materialdried over magnesium sulfate
4. customevaporated to an oil
5. dissolutionThe oil is dissolved in absolute ethanol (15 ml.)
6. addition10% palladium-on-carbon (100 mg.) added
7. stirringthe mixture stirred under one atmosphere of hydrogen gas
8. filtrationis filtered through diatomaceous earth
9. customthe filtrate evaporated to an oil
10. customThe oil is purified via preparation layer chromatography on silica gel plates
11. washeluted twice with 6:1 pentane