Pyrazole → (Octahydro-quinolin-1-yl)-(5-pyrazol-1-yl-thiophen-3-yl)-methanone

Participants

Reaction Conditions

Reaction Steps

To a solution of cis-(5-bromo-thiophen-3-yl)-(octahydro-quinolin-1-yl)-methanone (0.095 g, 0.29 mmol) in DME (2 mL) was added N′N′-dimethylethylenediamine (0.005 g), pyrazole (0.039 g, 0.58 mmol), copper iodide (0.011 g) and potassium carbonate (0.040 g, 0.29 mmol). The reaction mixture was placed under nitrogen then sealed in a vial and heated at 120° C. for 79 hours. The solution was partitioned between DCM and water and the phases separated using a hydrophobic frit. The organic phase was evaporated and the compound was purified by chromatography on a silica cartridge eluting 0-10% methanol in DCM then re-purified on a larger cartridge using 0-3% methanol in DCM. The compound was further purified by HPLC on a C6 phenyl column, eluting with 50%-98% acetonitrile in water (0.1% formic acid). The fractions containing the desired product were evaporated to give the title compound as a colourless oil (0.02 g). LCMS m/z 316.19 [M+H]+ R.T.=10.74 min (Analytical Method 2).

Provenance & Evidence