2-(Dicyclohexylphosphino)-2'-(dimethylamino)biphenyl → [2,6-Dimethyl-4-(6-trifluoromethyl-3,4-dihydro-1H-isoquinolin-2-yl)-phenyl]-carbamic acid ethyl ester

Participants

Reaction Steps

Bis(dibenzylidineacetone)palladium (17 mg, 0.03 mmol) and (2′-dicyclohexylphosphanyl-biphenyl-2-yl)-dimethylamine (35 mg, 0.09 mmol) were added to dry toluene (5 mL purged with argon) and stirred for 15 minutes under argon. Potassium tert-butoxide (166 mg, 1.48 mmol), 6-Trifluoromethyl-1,2,3,4-tetrahydro-isoquinoline hydrochloride salt (176 mg, 0.74 mmol) and (4-Bromo-2,6-dimethyl-phenyl)-carbamic acid ethyl ester (200 mg, 0.74 mmol) were then added and the reaction mixture was stirred at 80° C. overnight. The reaction mixture was then cooled to room temperature filtered through silica gel and purified by preparative thin layer chromatography (DCM 100%) to give the desired compound as a solid.

Provenance & Evidence