Br[C:2]1[C:3]([C:10]#[N:11])=[CH:4][S:5][C:6]=1[N+:7]([O-:9])=[O:8].C([Sn](CCCC)(CCCC)[C:17]1[S:18][CH:19]=[CH:20][N:21]=1)CCC>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O1CCOCC1>[N+:7]([C:6]1[S:5][CH:4]=[C:3]([C:10]#[N:11])[C:2]=1[C:17]1[S:18][CH:19]=[CH:20][N:21]=1)([O-:9])=[O:8]A mixture of 4-bromo-5-nitrothiophene-3-carbonitrile (0.5 g, 2.1 mmol), 2-(tributylstannyl)thiazole (1.2 g, 3.2 mmol), dioxane (3.5 mL), and tetrakis(triphenylphosphine)palladium(0) (0.23 g, 0.21 mmol) was heated by microwave to 130° C. for 30 min under nitrogen. The reaction mix was concentrated under reduced pressure, and the resulting dark oil was purified by column chromatography using a mobile phase of 20% EtOAc/hexanes to give 5-nitro-4-(thiazol-2-yl)thiophene-3-carbonitrile (180 mg) as an oil. LCMS of this material revealed an m/z of 238.0 with a retention time of 1.807 min method [1].
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