Pyridine → HCID 66744369, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl N-[5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl]-N-tert-butoxycarbonyl-carbamate (500 mg, 0.96 mmol) in toluene (2 mL) and ethanol (2 mL) was added pyridine; 2,4,6-trivinyl-1,3,5,2,4,6-trioxatriborinane (290 mg, 1.2 mmol), K2CO3 (533 mg, 4 mmol) and Pd(PPh3)4 (112 mg, 0.1 mmol). The reaction mixture was heated at 60° C. under an atmosphere of nitrogen for 1 h. The reaction mixture was filtered, concentrated and the crude material obtained was purified via silica gel column chromatography using EtOAc/hex gradient to obtain tert-butyl N-tert-butoxycarbonyl-N-[3-(5-phenyl-1,3,4-oxadiazol-2-yl)-5-vinyl-pyrazin-2-yl]carbamate (449 mg, 100%).

Provenance & Evidence