Lithium Hydroxide → 4-Tert-butyl-3-cyanobenzoic acid
반응식
[C:1]([C:5]1[CH:14]=[CH:13][C:8]([C:9]([O:11]C)=[O:10])=[CH:7][C:6]=1[C:15]#[N:16])([CH3:4])([CH3:3])[CH3:2].[Li+].[OH-]>O1CCOCC1>[C:1]([C:5]1[CH:14]=[CH:13][C:8]([C:9]([OH:11])=[O:10])=[CH:7][C:6]=1[C:15]#[N:16])([CH3:4])([CH3:2])[CH3:3]참가 물질
4
반응 조건
- 온도
- 60 °C
실험 절차
A mixture of methyl 4-tert-butyl-3-cyano-benzoate (380 mg, 1.75 mmol), LiOH (3.5 mL of 2.0 M, 7.0 mmol) and 1,4-dioxane (3.5 mL) was heated at 60° C. for 2 h. The reaction mixture was made acidic and was washed with dichloromethane (2×8 mL). The organics were combined, dried over sodium sulfate and evaporated to dryness to give 4-tert-butyl-3-cyanobenzoic acid (348 mg, 98%). 1H NMR (400 MHz, CD3CN) δ 9.77 (s, 1H), 8.31 (d, J=1.8 Hz, 1H), 8.17 (dd, J=8.4, 1.9 Hz, 1H), 7.71 (d, J=8.4 Hz, 1H), 1.55 (s, 9H). 4-Cyano-3-methylbenzoic acid was also prepared using the procedures described above.