Hydrochloric Acid → 3-Benzyl-3-methyl-2,3-dihydro-benzofuran-6-carboxylic acid (2-iodo-phenyl)-amide

To a stirred suspension of 3-Benzyl-3-methyl-2,3-dihydro-benzofuran-6-carboxylic acid (80 mg, 0.3 mmol) and 2-Iodoaniline (72 mg, 0.33 mmol) in dichloromethane (3 mL) and DMF (2 mL) were added O-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HATU) (125 mg, 0.33 mmol) and then a solution of N,N-diisopropylethylamine (58 mg, 78 μL, 0.45 mmol, mL) in DMF (1 mL). The reaction mixture was stirred at ambient temperature for 18 h. The reaction medium is acidified by adding a 1.2 M hydrochloric acid solution and extracted with ethyl acetate. The organic phase is washed with water, dried (MgSO4), and concentrated to give the amide which is purified by flash chromatography (AcOEt/heptane: 4/6). The column was chosen too small and a bigger column was chosen (AcOEt/heptane: 4/6) to afford 22 mg of the desired amid as a pale yellow solid (16%).

1. extractionextracted with ethyl acetate
2. washThe organic phase is washed with water
3. dry with materialdried (MgSO4)
4. concentrationconcentrated

ORD-Eintrag

ord-0645eb309a324247a1d5f4412f27b57b

Quelldatensatz

uspto-grants-2013_05

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08440832B2