Dimethyl Sulfoxide → Dimethyl(4-ethoxyphenyl)silylmethanol

温度

90 °C

A mixture of chloromethyldimethyl(4-ethoxyphenyl)silane (0.55 gram), potassium acetate (0.47 gram) and 3 ml of DMSO was stirred for 1.5 hours at 90° C. After cooling to room temperature, the reaction mixture was added with water and extracted with ethyl ether. The ether extract was washed with saturated sodium chloride solution, dried, and concentrated. The residue (0.55 gram) was dissolved in 5 ml of ethyl ether. Lithium aluminum hydride (100 mg) was added to the resulting solution at 0° C. with stirring and the solution was stirred for 2 hours at the same temperature. After addition of a minimun amount of saturated ammonium chloride solution, the mixture was dried over anhydrous sodium sulfate, and concentrated. The residue was purified by column chromatography over silica gel (15 gram) using n-hexane:ethyl acetate (100:30) as the eluent to give the title compound as a white crystal. Yield 0.50 gram. Physicochemical data of the product is given in Table 4.

1. temperatureAfter cooling to room temperature
2. extractionextracted with ethyl ether
3. extractionThe ether extract
4. washwas washed with saturated sodium chloride solution
5. customdried
6. concentrationconcentrated
7. dissolutionThe residue (0.55 gram) was dissolved in 5 ml of ethyl ether
8. additionLithium aluminum hydride (100 mg) was added to the resulting solution at 0° C.
9. stirringwith stirring
10. stirringthe solution was stirred for 2 hours at the same temperature
11. additionAfter addition of a minimun amount of saturated ammonium chloride solution
12. dry with materialthe mixture was dried over anhydrous sodium sulfate
13. concentrationconcentrated
14. customThe residue was purified by column chromatography over silica gel (15 gram)

ORDレコード

ord-1681bfee06f946ff90eb5c28dcfed458

出典データセット

uspto-grants-1987_05

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04663314