Water → 7-Chloro-3-(3-pyrazol-1-yl-phenyl)-imidazo[1,2-a]pyridine

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Reaction Steps

3-Bromo-7-chloro-imidazo-[1,2-a]-pyridine (1 eq, 2.59 mmol, 600 mg) and 3-(1H-pyrazolyl)-phenylboronic acid (1.2 eq, 1.04 mmol, 195 mg) are dissolved in DME (5 ml) and water (1.5 ml) and Na2CO3 (0.65 eq, 1.68 mmol, 209 mg) is added. PdCl2(PPh3)2 (0.04 eq, 0.104 mmol, 72.8 mg) is added and the reaction mixture is heated using microwave radiation at 120° C. for 10 min. At the completion of this time the solvent is removed in vacuo and the reaction mixture is purified by flash column chromatography eluting with 9:1 DCM/MeOH to yield 7-chloro-3-(3-pyrazol-1-yl -phenyl)-imidazo[1,2-a]pyridine as a brown solid; [M+H]+=295

Provenance & Evidence