Water → 2-Aminocarbonylamino-5-(4-vinylphenyl)pyrrole-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

2-Aminocarbonylamino-5-(4-bromophenyl)pyrrole-3-carboxamide (Compound No. 1-1, 80 mg, 0.25 mmol), sodium hydrogencarbonate (52 mg, 0.62 mmol), vinylboronic acid pinacol ester (63 μL, 0.37 mmol) and tetrakis(triphenylphosphine)palladium(0) (14 mg, 0.012 mmol) in mixed solvent (4 mL), which consists of water and 1,4-dioxane (1:3), were stirred overnight at 95° C. The brine (10 mL) was added to the reaction solution, extracted with ethyl acetate (10 mL), and then the organic layer was dried over magnesium sulfate. The layer was filtered with celite and the solvent was removed under reduced pressure. The obtained solid was washed with diethyl ether (2 mL), and dried under reduced pressure to give the target compound (22 mg) as a pale brown solid (Yield 33%).

Provenance & Evidence