反应详情

温度

110 °C

A microwave vial equipped with a stir bar was added 4-bromo-5-nitrothiophene-3-carbonitrile (0.24 g, 1.05 mmole) and tetrakis(triphenylphosphine)palladium (0) (0.14 g, 0.12 mmol), copper iodide (0.028 g, 0.15 mmol) and then purged with N2 (g) inlet prior to addition of 5-(tributylstannyl)thiazole (0.63 g, 1.67 mmol), dioxane (2.3 mL) and few drops of DMF. The reaction mixture was heated at 110° C. for 30 min and then concentrated under reduced pressure. Purification by flash chromatography (silica, 40:60 ethyl acetate/hexane) gave 5-nitro-4-(thiazol-5-yl)thiophene-3-carbonitrile (153 mgs, 61%) Retention time (min)=1.715, method [4], MS(ESI) 238.0 (M+H).

1. customA microwave vial equipped with a stir bar
2. custompurged with N2 (g) inlet
3. concentrationconcentrated under reduced pressure
4. customPurification by flash chromatography (silica, 40:60 ethyl acetate/hexane)