4-tert-Butylphenol → HCID 89648362, compound

Participants

Reaction Steps

Following procedure A, 3,4-difluoronitrobenzene (401 mg, 2.52 mmol, 1.00 eq) and 4-tert-butylphenol (477 mg, 3.18 mmol, 1.26 eq) were dissolved in DMSO (6 mL). Anhydrous K2CO3 (522 mg, 3.78 mmol, 1.50 eq) was added and the reaction mixture was stirred at room temperature for 19 h. After extraction with Et2O, the crude product was purified by flash column chromatography (SiO2; EtOAc/petrolether 1:50) to afford the title compound as colourless oil (722 mg, 2.52 mmol, 99% yield). Rf=0.54 (EtOAc/PE 1:20). HRMS (ESI) calcd. for C16H17FNO3+ [M+H]+ 290.1187. found: 290.1194. 1H NMR (400 MHz, CDCl3) δ 8.07 (dd, J=10.3, 2.7 Hz, 1H, aromatic H), 7.96 (ddd, J=9.1, 2.7, 1.5 Hz, 1H, aromatic H), 7.49-7.38 (m, 2H, aromatic H), 7.09-6.99 (m, 2H, aromatic H), 6.96 (dd, J=9.1, 8.0 Hz, 1H, aromatic H), 1.35 (s, 9H, C(CH3)3). 13C NMR (101 MHz, CDCl3) δ 153.35, 152.23, 151.93, 151.82, 150.84, 148.70, 142.40, 142.33, 127.29, 120.68, 120.64, 119.38, 117.73, 117.71, 113.28, 113.05, 34.65, 31.54.

Provenance & Evidence