Dichloromethane → 4-Nitro-2-(prop-1-en-2-yl)-1-(trifluoromethoxy)benzene

関与物質

反応手順

2-bromo-4-nitro-1-(trifluoromethoxy)benzene (0.56 g, 1.97 mmol), 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)-1,3,2-dioxaborolane (0.50 g, 2.96 mmol), PdCl2(dppf).CH2Cl2 adduct (0.16 g, 0.20 mmol), and Na2CO3 (0.63 g, 5.92 mmol) were combined in a 20 mL microwave vial and DME (15.78 mL) and Water (3.94 mL) were added. The mixture was stirred at RT for 6 s and then heated to 120° C. in the microwave for 30 min. The crude mixture was diluted with EtOAc and Water. The organic layer was washed with water and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude was diluted with DCM and silica gel was added. The mixture was concentrated under reduced pressure to dry-load material for purification. The crude was purified via silica gel FCC, 100% Heptane-100% EtOAc to give 4-nitro-2-(prop-1-en-2-yl)-1-(trifluoromethoxy)benzene (456 mg). 1H NMR (400 MHz, DMSO-d6) δ 2.08-2.13 (m, 3H), 5.21 (p, J=1.0 Hz, 1H), 5.43 (p, J=1.5 Hz, 1H), 7.68 (dq, J=9.0, 1.6 Hz, 1H), 8.21 (d, J=2.9 Hz, 1H), 8.28 (dd, J=9.0, 2.9 Hz, 1H).

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