4-Hydroxybenzoic Acid → Benzoic acid, 4-hydroxy-, 2-methylbutyl ester
反応式
[OH:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[CH3:11][C@@H:12]([CH2:15][CH3:16])[CH2:13]O.S(=O)(=O)(O)O>C1(C)C=CC=CC=1>[CH3:11][CH:12]([CH2:15][CH3:16])[CH2:13][O:7][C:6](=[O:8])[C:5]1[CH:9]=[CH:10][C:2]([OH:1])=[CH:3][CH:4]=1参加物
5
実験手順
0.29 mole(40.0 g) of 4-hydroxybenzoic acid and 0.35 mole(30.9 g) of (S)-(-)-2-methylbutanol were refluxed for 20 hours in 150 ml of toluene in the presence of 1 ml of conc. sulfuric acid. The reaction solution was concentrated, and then purified by column chromatography to obtain 53.2 g of 4-hydroxybenzoic acid 2-methylbutyl ester [[α]D23 =+4.95°(CHCl3)]. (yield: 88%)
後処理
- concentrationThe reaction solution was concentrated
- custompurified by column chromatography
出典と根拠
- ORDレコード
- ord-469b52153c964ebba05ae7f9953356b8
- 出典データセット
- uspto-grants-1989_07
- 特許番号
- US04844835
反応ノート
読み込み中…