Ethyl Acetate → HCID 90408707, compound

Participants

Reaction Conditions

Reaction Steps

1,4-difluoro-2-iodo-5-(trifluoromethyl)benzene (500 mg, 1.6 mmol) was dissolved in dry THF (7 mL), cooled to 0° C. and treated in portions with isopropyl magnesium chloride-lithium chloride complex (1.4 mL, 1.3 M, 1.8 mmol) and stirred for 40 min at 5° C. 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (360 μl, 330 mg, 1.8 mmol) was added and stirring was continued for 1 h. After treating with sat. NH4Cl, the mixture was shaken with ethyl acetate. The organic phase was washed with saturated NaCl, dried (Na2SO4), and evaporated to give the title compound as a light brown oil (500 mg, 100%). The material was used without further purification: 1H NMR (400 MHz, CDCl3) δ 7.54 (dd, J=9.9, 4.3 Hz, 1H), 727 (dd, J=8.0, 5.2 Hz, 2H), 1.37 (s, 12H). 19F NMR (376 MHz, CDCl3) δ −62.10, −62.13, −106.85, −106.90, −121.81, −121.87, −121.90.

Provenance & Evidence