Potassium Carbonate → HCID 53316516, compound

Participants

Reaction Conditions

Reaction Steps

To 0.400 g (0.428 mmole) of Wang resin 6-chloro-8-iodo-2-(trifluoromethyl)-2H-chromene-3-carboxylate was added 50 mg (0.043 mmole) tetrakis(triphenylphosphine)palladium(0), 0.180 g (1.285 mmole) 4-fluorophenylboronic acid, 0.857 mL K2CO3 (2M soln degassed), and 4 mL degassed DMF. The reaction mixture was heated to 100° C. for 18 hr. The reaction mixture was transferred and washed as follows: DMF (×5), H2O (×5), MeOH (×5), and CH2Cl2 (×5). The resin was treated with 2 mL (TFA:CH2CL2, 1:1) for 30 minutes. The filtrate was collected and treatment was repeated. The resin was washed with CH2Cl2 (×2) and all filtrates were combined and concd. The resulting oil was purified using reverse phase chromatography to afford 0.055 g (34%) of a yellow crystalline solid: 1H NMR (CDCl3/400 MHz) 5.66 (q, 1H, J=6.8 Hz), 7.10-7.15 (m, 2H), 7.26 (d, 1H, J=2.4 Hz), 7.37 (d, 1H, J=2.4 Hz), 7.42-7.47 (m, 2H), 7.90 (s, 1H); MS (ES+) 373 (M+1, 100); HRMS (ES−) m/z calcd for (C17H9O3ClF4) 371.0093, found 371.0067.

Provenance & Evidence