Diisopropylethylamine → 1-[2-(2,5-Dichloro-phenoxy)-5-fluoro-pyridine-3-carbonyl]-1,2,3,4-tetrahydro-quinoline-4-carboxylic acid methyl ester

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Reaction Steps

To a solution of 2-(2,5-dichloro-phenoxy)-5-fluoro-nicotinoyl chloride (48.1 mg, 0.15 mmol, 1.0 equiv; Example 146, Step 1) in anhydrous DMF (1 mL) was added N-ethyldiisopropylamine (97 mg, 128 μL, 0.75 mmol, 5.0 equiv; [CAS RN 7087-68-5]) and 1,2,3,4-tetrahydro-quinoline-4-carboxylic acid methyl ester (31.6 mg, 0.165 mmol, 1.1 equiv; [CAS RN 68066-85-3]) and the reaction mixture stirred at rt for 2 h. Removal of the solvent mixture under reduced pressure and purification by preparative HPLC on reversed phase (Xterra® PrepMSC 18, 5 μm, 19×50 mm column equipped with a Gilson Liquid Handler 215 autosampler, two Rainin Dynamax® SD-300 pumps, a Sedex ELSD 75 lightscatter and a Dionex UVD 340S UV detector) eluting with a gradient of acetonitrile/water provided 9.1 mg (13%) of the title compound as a light yellow solid. MS (ISP): 475.1 [M+H]+.

Provenance & Evidence