Triethylamine → HCID 69019547, compound

Participants

Reaction Conditions

Reaction Steps

Add triethylamine (43 mg, 1.5 Eq.) dropwise to 4-cyano-5-ethyl-1-methyl-3-[4-(2-amino-phenoxy)-phenyl]-1H-pyrole-2-carboxylic acid ethyl ester (110 mg, 0.28 mmol, prepared in example E-231) in methylene chloride (25 mL) while stirring at 0° C. under a nitrogen atmosphere. Immediately add isopropylsulfonyl chloride (48 mg, 1.2Eq.) dropwise and allow the reaction to warm to room temperature and stir overnight. Add water to the mixture and separate layers. Wash the organic layer once with water, dry over potassium carbonate, filter, and concentrate under reduced vacuum to give 156 mg of a solid. Purity the material by silica gel chromatography (Chromatotron™) eluting with methylene chloride/ethyl acetate 19:1 to provide 23 mg of the title compound as a viscous oil. (Bruker 300) 1H NMR (CDCl3) δ 7.30-7.35 (2H, d), 7.22-7.28 (1H, m), 6.99-7.03 (2H, d), 6.89-6.97 (2H, m), 6.75-6.79 (1H, d), 4.06-4.14 (2H, dd), 3.85-3.88 (3H, s), 3.29-3.36 (1H, m), 2.81-2.87 (2H, dd), 1.36-1.42 (6H, d), 1.25-1.32 (3H, t), 1.02-1.09 (3H, t).

Provenance & Evidence