反応 #684951

反応方程式

sodium hydroxide

sodium borohydride

sulfuric acid

p-n-propylbenzoic acid

→

title compound

収率 90.1%

(4-Propylphenyl)methanol

収率 90.1%

溶媒

methanol

ether

tetrahydrofuran

反応条件

後処理

1. 1
   その他the temperature of the reaction system below 20° C.
2. 2
   workup.ADDITIONwere added
3. 3
   抽出this mixture was extracted with ethyl acetate
4. 4
   洗浄The ethyl acetate layer was washed with saturated brine
5. 5
   乾燥dried over anhydrous magnesium sulfate
6. 6
   濃縮concentrated under reduced pressure

実験手順

A solution of sodium borohydride (2.9 g, 76 mmol) and concentrated sulfuric acid in ether (prepared by adding 2.0 ml of concentrated sulfuric acid to 4.0 ml of ether) was added dropwise to a solution of p-n-propylbenzoic acid (5.0 g, 32 mmol) in tetrahydrofuran (20 ml) cooled to 0° C. keeping the temperature of the reaction system below 20° C., and then this mixture was stirred at room temperature for 3 hours. After the mixture was cooled on ice, methanol and 1 N sodium hydroxide were added, and this mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure to give the title compound (4.33 g). This compound was used in the following reaction without purification.

出典