Potassium Carbonate → HCID 58103887, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1,2,3,6-tetrahydro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-pyridine-1-carboxylic acid ter-butylester (0.75 g, 2.426 mmol) [CAS 375853-82-0] (synthesis described in WO 2004072025 A2 20040826) in 1,4-dioxane (7 ml) and an aqueous saturated solution of K2CO3 (3.5 ml), was added 2-benzyloxy-1-bromo-3-fluoro-benzene (1.023 mg, 3.638 mmol) [1036724-55-6]. The resulting solution was degassed using a stream of nitrogen and to this was added Pd(PPh3)4 (0.14 g, 0.121 mmol). The reaction was then subjected to microwave heating in a sealed tube at 150° C. for 10 min. After cooling to room temperature, the reaction mixture was diluted with water and washed with EtOAc. The organic layer was separated, dried (Na2SO4) and evaporated in vacuo. The residue was purified by column chromatography (silica gel; starting from Heptane/DCM up to 100% as eluent). The desired fractions were collected and evaporated in vacuo to yield intermediate compound D51 (0.727 g, 78%)

Provenance & Evidence