تفاعل #482222

معادلة التفاعل

2-cyclopropyl-4,4-dimethyl -6-trifluoromethylsulfonyloxy-1,2,3,4-tetrahydroisoquinoline

carbon monoxide

1,3-bis(diphenylphosphino)propane

dimethylsulfoxide

ethyl acetate

Intermediate 22

2-cyclopropyl-4,4-dimethyl -6-trifluoromethylsulfonyloxy-1,2,3,4-tetrahydroisoquinoline

→

title compound

Ethyl-2-cyclopropyl-4,4-dimethyl-1,2,3,4-tetrahydroisoquinoline-6-carboxylate

المذيبات

1,2-dichloroethane

triethyl amine

hexane

ethanol

ظروف التفاعل

الإجراء التجريبي

Following general procedure K and using 2-cyclopropyl-4,4-dimethyl -6-trifluoromethylsulfonyloxy-1,2,3,4-tetrahydroisoquinoline (Intermediate 22, 1.6 g, 4.6 mmol), palladium acetate (0.127 g, 0.56 mmol), 1,3-bis(diphenylphosphino)propane (0.160 g, 0.39 mmol), dimethylsulfoxide (2 mL), 1,2-dichloroethane (5 mL), triethyl amine (2 mL), ethanol (5 mL) and an atmosphere of carbon monoxide followed by flash column chromatography over silica gel (230-400 mesh) using 10% ethyl acetate in hexane as the eluent the title compound was obtained as an oil (1 g, 79%).

المصدر