Cesium fluoride → tert-butyl 6-(8-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydroisoquinolin-2(1H)-yl)-3-(1-benzyl-1H-pyrazol-4-yl)picolinate

Participants

Reaction Steps

A mixture of EXAMPLE 1D (0.113 g), 1-benzyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.063 g),tetrakis(triphenylphosphine)palladium(0) (0.023 g) and CsF (0.091 g) in 1,2-dimethoxyethane (2 mL) and methanol (1 mL) was heated at 120° C. for 30 minutes under microwave heating conditions. The reaction mixture was partitioned between water and ethyl acetate. The aqueous layer was extracted with additional ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4, filtered, and concentrated. The residue was purified by flash column chromatography on silica gel eluting with 35% ethyl acetate in hexanes to afford the title compound.

Provenance & Evidence