Cl[CH2:2][C:3]1[N:8]=[C:7]([C:9]#[N:10])[CH:6]=[CH:5][CH:4]=1.[Br:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[OH:18].C([O-])([O-])=O.[Cs+].[Cs+].C(#N)C>C(OCC)(=O)C>[Br:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[O:18][CH2:2][C:3]1[N:8]=[C:7]([C:9]#[N:10])[CH:6]=[CH:5][CH:4]=1To a sealable 4 mL vial, containing 6-(chloromethyl)picolinonitrile (100 mg, 0.66 mmol) and 2-bromophenol (113 mg, 0.66 mmol), were added Cs2CO3 (320 mg, 0.98 mmol) and acetonitrile (1.7 mL). The vial was then heated at 80° Celsius for 15 hours. The reaction was then diluted with ethyl acetate, filtered through a celite plug and concentrated to dryness. The material was used without further purification. 1H NMR (500 MHz, CDCl3) δ 8.02-7.93 (m, 1H), 7.93-7.85 (m, 1H), 7.65-7.59 (dd, J=7.7, 1.1, 1H), 7.58-7.53 (dd, J=7.9, 1.6, 1H), 7.29-7.22 (m, 1H), 6.93-6.90 (dd, J=8.3, 1.3, 1H), 6.90-6.86 (m, 1H), 5.23 (s, 2H).
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