Triethylamine → (E)-[2-(3-{4-[1-(4-Chloro-phenylcarbamoyl)-2-(3-diethylamino-pyrrolidin-1-yl)-ethyl]-phenyl}-acryloylamino)-phenyl]-carbamic acid tert-butyl ester

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A mixture of 2-(4-bromo-phenyl)-N-(4-chloro-phenyl)-3-(diethylamino-pyrrolidin-1-yl)-propionamide (826 mg, 1.72 mmol), (2-acryloylamino-phenyl)-carbamic acid tert-butyl ester (452 mg, 1.72 mmol), Pd2(dba)3 (47.3 mg, 0.051 mmol), tri-o-tolylphosphine (62.8 mg, 0.017 mmol) and triethylamine (694 mg, 6.88 mmol) in DMF (10 mL) was stirred at 100 degrees Celsius under N2 for 4 hours. After cooling to room temperature, the mixture was poured into a saturated aqueous solution of NH4Cl, and extracted with EtOAc (80 mL). The organic layer was washed with brine, dried over Na2SO4, filtered, concentrated in vacuo, and used directly without further purification. MS: calc'd 660 (MH+), exp 660 (MH+).

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