Sodium Carbonate → tert-butyl N-[4-[3-(2-ethenylphenyl)phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

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Following the procedure outlined for Examples 41–107, reaction of 2-vinyl-phenylboronic acid (30 mg, 0.20 mmol, Aldrich Chemical Company), {[4-(3-bromo-benzenesulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (50 mg, 0.1 mmol, as prepared in Example 27, step c), tetrakis(triphenylphosphine)palladium(0) (29 mg, 0.025 mmol, Strem Chemicals, Inc., Newburyport, Mass.), Na2CO3 (400 μL, 2M aqueous), and toluene/EtOH mixture (2:1, 1.2 mL) afforded 25 mg (50%) after purification (1:3 EtOAc/hexanes, 2000μ SiO2 plate) of the title compound as a white foam.

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