Dichloromethane → HCID 59402292, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 7-bromo-3-methyl-3,4-dihydroisoquinoline-2(1H)-carboxylate (0.326 g, 1.00 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.31 g, 1.50 mmol, Aldrich, Cat. No. 595314), in 1,4-dioxane (4.0 mL) was stirred at r.t. for 10 min. Potassium carbonate (415 mg, 3.00 mmol) in water (2.0 mL) was added to give a deep red solution. The mixture was degassed and refilled with nitrogen three times. [1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (35.0 mg, 0.0424 mmol) was added and the mixture was degassed and refilled with nitrogen three times and then heated at 120° C.)(oil bath temperature) for 3 h. After cooling, the mixture was diluted with ethyl acetate, washed with water and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with methanol in DCM (0-10%) to give the desired product (320 mg, 97.7%). LCMS (M+H)+: m/z=328.1.

Provenance & Evidence