Tetrafluoroboric acid → HCID 66800342, compound

Participants

Reaction Steps

A toluene (10 ml) suspension of (4aS,8aS)-2,2 -dimethyldecahydroquinoxaline (400 mg, 2.38 mmol), 4-bromo-2-chlorobenzonitrile (669 mg, 3.09 mmol), Pd(OAc)2 (53 mg, 0.24 mmol), t-Bu3P.HBF4 (70 mg, 0.24 mmol), and t-BuONa (320 mg, 3.33 mmol) was stirred for 5 hours under reflux in a nitrogen atmosphere. The reaction solution was cooled. Then, insoluble matter was filtered through celite, and the filtrate was concentrated. The obtained residue was purified by silica gel column chromatography (CH2Cl2/MeOH) to obtain an orange amorphous solid. This amorphous solid was dissolved in ethyl acetate (5 mL). A crystal deposited by the addition of 4 N HCl/AcOEt (0.6 mL) was collected by filtration and dried under reduced pressure to obtain (4aS,8aS)-1-(3-chloro-4-cyanophenyl)-3,3-dimethyldecahydroquinoxaline hydrochloride (304 mg, 48%) in a pale orange powder form.

Provenance & Evidence