Br[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][N:3]=1.[CH:11]([B-](F)(F)F)=[CH2:12].[K+].C(N(CC)CC)C>C(O)C>[N+:8]([C:5]1[CH:6]=[CH:7][C:2]([CH:11]=[CH2:12])=[N:3][CH:4]=1)([O-:10])=[O:9]To a 20 ml, microwave tube was added 2-bromo-5-nitropyridine (0.20 g, 0.98 mmol), potassium vinyltrifluoroborate (145 mg, 1.1 mmol), PdCl2(dppf)-CH2Cl2 complex (40 mg, 0.049 mmol), and a stir bar. The tube was sealed, and ethanol (6 mL) and triethylamine (0.41 mL, 3.0 mmol) was added via syringe. The mixture was purged three times with nitrogen and then heated to 120° C. for 30 minutes. LC at that point showed mostly product. The reaction was diluted with DCM, adsorbed onto silica gel, and purified by silica gel flash chromatography (Hexane:EtOAc). LC-MS (IE, m/z): 151 [M+1]+.
Wird geladen…
