反应详情

To a solution of ethyl 3-benzoylbenzoate (1.0197 g, 4.0 mmol, 1.0 equiv) in ethanol (10 mL) was added of NaBH4 (0.32 g, 2.1 equiv). The reaction mixture was stirred at rt for 1.5 h, quenched with 10% aq Na2CO3, extracted three times with CH2Cl2, and dried over Na2SO4. The crude product was used in the next step without further purification. LC-MS (3 min) tR=1.64 min, m/z 239 (M+-OH). 1H NMR (400 MHz, CDCl3) δ 8.09 (m, 1H), 7.93-7.96 (m, 1H), 7.56-7.59 (m, 1H), 7.26-7.43 (m, 6H), 5.89 (s, 1H), 4.36 (q, J=7.2 Hz, 2H), 2.38 (br s, 1H), 1.40 (t, J=7.2 Hz, 3H).

1. customquenched with 10% aq Na2CO3
2. extractionextracted three times with CH2Cl2
3. dry with materialdried over Na2SO4
4. customThe crude product was used in the next step without further purification
5. customLC-MS (3 min) tR=1.64 min, m/z 239 (M+-OH)