反应详情

A solution of 2'-[2-(1-methyl-1-phenylethyl)-2H-tetrazol-5-yl]biphenyl-4-carbaldehyde (0.62 g, 1.7 mmol), prepared as in Example 8 or 9, and sodium borohydride in 30 mL of absolute ethanol was stirred at room temperature for 1 hour. The mixture poured into 150 mL of water and the mixture was extracted withethyl acetate. The ethyl acetate layer was dried over magnesium sulfate andthen concentrated. The residue was dissolved in approximately 10 mL of absolute diethyl ether and the solution was cooled in an ice bath giving aprecipitate. The precipitate was isolated by filtration and drying gave 2'-[2-(1-methyl-1-phenylethyl)-2H-tetrazol-5-yl]biphenyl-4-methanol (0.37 g, 1.0 mmol), m.p. 119°-120° C.

1. extractionthe mixture was extracted withethyl acetate
2. dry with materialThe ethyl acetate layer was dried over magnesium sulfate
3. concentrationandthen concentrated
4. dissolutionThe residue was dissolved in approximately 10 mL of absolute diethyl ether
5. temperaturethe solution was cooled in an ice bath
6. customgiving aprecipitate
7. customThe precipitate was isolated by filtration
8. customdrying