Potassium Phosphate, Tribasic → [3-[6-Chloro-5-[(cyclohexylacetyl)amino]-2-quinolinyl]propyl]-carbamic acid 1,1-dimethylethyl ester

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Reaction Steps

To 2-propenyl-carbamic acid 1,1-dimethylethyl ester under nitrogen was added 9-borabicyclo[3.3.1]nonane (0.5M in tetrahydrofuran, 7.1 mL) and the mixture refluxed for 2 hours. The reaction was allowed to cool to room temperature and potassium phosphate (1.02 g) in water (1.8 mL) added. The resultant mixture was stirred for 15 minutes. N-(2,6-Dichloro-5-quinolinyl)-cyclohexaneacetamide (prepared as described in Example 1a) (0.5 g) was added followed by tetrakis(triphenylphosphine)palladium(0) (17 mg) in dimethylformamide (2.8 mL). The reaction was heated at 70° C. under nitrogen for 4 hours. To the cooled solution was added brine (30 mL) and the mixture extracted with ethyl acetate (3×30 mL). The combined organics were dried, filtered and concentrated to give the sub-title compound (0.9 g).

Provenance & Evidence