反应详情

Following procedure A, 4-fluoronitrobenzene (318 mg, 2.25 mmol, 1.00 eq) and 4-tert-pentylphenol (460 mg, 2.28 mmol, 1.24 eq) were dissolved in DMSO (6 mL) Anhydrous K2CO3 (465 mg, 3.37 mmol, 1.49 eq) was added and the reaction mixture was stirred at room temperature for 2 h. After extraction with Et2O, the crude product was purified by flash column chromatography (SiO2; EtOAc/petrolether 1:100) to afford the title compound as colourless solid (533 mg, 1.87 mmol, 83% yield). Rf=0.70 (EtOAc/PE 1:20). HRMS (ESI) calcd. for C17H20NO3+ [M+H]+ 285.1365. found: 285.1359. 1H NMR (400 MHz, CDCl3) δ 8.25-8.14 (m, 2H, aromatic H), 7.44-7.32 (m, 2H, aromatic H), 7.06-6.96 (m, 4H, aromatic H), 1.66 (q, J=7.4 Hz, 2H, Ar—C(CH3)2CH2CH3), 1.31 (s, 6H, Ar—C(CH3)2CH2CH3), 0.71 (t, J=7.4 Hz, 3H, Ar—C(CH3)2CH2CH3). 13C NMR (101 MHz, CDCl3) δ 163.81, 152.24, 146.94, 142.56, 127.91, 126.01, 120.06, 116.99, 37.89, 37.06, 28.63, 9.27.

1. additionwas added
2. extractionAfter extraction with Et2O
3. customthe crude product was purified by flash column chromatography (SiO2; EtOAc/petrolether 1:100)