反应详情

温度

150 °C

Sodium carbonate (100 μl of a 2M aqueous solution), (2-isopropoxy-5-methylphenyl)boronic acid (19 mg), and N-(4-bromobenzyl)-4-(5-cyano-7-isopropyl-1,3-benzoxazol-2-yl)benzamide (24 mg, EXAMPLE 1) were dissolved in toluene (2.1 ml), water (0.6 ml) and ethanol (0.3 ml). To this solution was added tetrakis(triphenylphosphine)palladium(0) (9 mg). The mixture was heated to 150° C. for 25 min via microwave. Upon cooling, the mixture was concentrated in vacuo and then dissolved in dichloromethane (5 ml). The sample was transferred to a Biotage 40M column and purified via flash chromatography, eluting 1 column volume of 100% hexanes followed by a gradient of 0 to 100% ethyl acetate in hexanes over 10 column volume, followed by 100% ethyl acetate for 4 column volumes, to provide the title compound. Mass spectrum (ESI) 544.2 (M+1). 1H NMR (500 MHz, CDCl3): δ 8.35 (d, J=8.4 Hz, 2H), 8.00 (d, J=8.2 Hz, 2H), 7.94 (s, 1H), 7.58 (d, J=8.0 Hz, 2H), 7.52 (s, 1H), 7.40 (d, J=8.0 Hz, 2H), 7.13 (s, 1H), 7.09 (d, J=8.2 Hz, 1H), 6.90 (d, J=8.4 Hz, 2H), 6.47 (t, J=4.6 Hz, 1H), 4.73 (d, J=5.5 Hz, 3H), 4.40 (sept, J=6.2 Hz, 1H), 3.48 (sept, J=7.1 Hz, 1H), 2.32 (s, 3H), 1.46 (d, J=6.9, 6H), 1.24 (d, J=5.9, 6H).

1. temperatureUpon cooling
2. concentrationthe mixture was concentrated in vacuo
3. dissolutiondissolved in dichloromethane (5 ml)
4. custompurified via flash chromatography
5. washeluting 1 column volume of 100% hexanes