Dichloromethane → HCID 58204712, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 8-bromo-2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene (1.2 g, 3.09 mmol), 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (1.8 g, 5.82 mmol), PdCl2dppf.DCM (339 mg, 0.46 mmol) and potassium carbonate (1.9 g, 13.9 mmol) in DMF (10 mL) was degassed and then heated at 90° C. under an atmosphere of nitrogen for 1.5 h. The cooled reaction mixture was diluted with ethyl acetate and water, the aqueous extracted with ethyl acetate and combined organic extracts dried (Na2SO4), filtered and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 0 to 100% ethyl acetate in cyclohexane, 1% TEA in final eluent) to give 4-[2-(2-Isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-yl]-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester as a tan foam (1.5 g, 99%). LCMS: RT=3.77 min, [M+H]+=491

Provenance & Evidence