反应详情

To dimethyl 5-bromoisophthalate (1.5 g, 5.5 mmol, Aldrich) in i-PrOH (33.3 ml) and water (16.7 ml), 2-methoxy phenyl boronic acid (Aldrich), triethyl amine (841 mg, 8.25 mmol) and PdCl2(dppf) (180 mg, 0.22 mmol) were added and the reaction mixture was refluxed for 4 h. Then reaction mixture was diluted with ether, washed with water, brine and dried. Volatiles were removed under vacuum and the crude residue was column chromatographed (30% ethylacetate/70% hexanes) to yield 650 mg of dimethyl 2′-methoxybiphenyl-3,5-dicarboxylate as white solid.

1. temperaturethe reaction mixture was refluxed for 4 h
2. customThen reaction mixture
3. washwashed with water, brine
4. customdried
5. customVolatiles were removed under vacuum
6. customchromatographed (30% ethylacetate/70% hexanes)