Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide | HCID 15908 | — |
| Reactant | 1-Hydroxybenzotriazole | HCID 75771 | — |
| Reactant | Methylamine hydrochloride | HCID 6364545 | — |
| Reactant | HCID 22275143 | HCID 22275143 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | HCID 22275271 | HCID 22275271 | 97.4% |
Reaction Steps
A mixture of acid 4-[2-(1-([(4-chlorophenyl)sulfonyl]-2,5-difluoroanilino}ethyl)phenoxy]butanoic acid (107 mg, 0.21 mmol), HOBT (31 mg, 0.23 mmol), EDCI (44 mg, 0.23 mmol), Et3N (88 μL, 0.63 mmol) and CH3NH2.HCl (16 mg, 0.23 mmol) in CH2Cl2 (1.0 mL) was stirred at 25° C. for 13 h. The mixture was diluted with ethyl acetate. The organic solution was washed with H2O and sat. NaCl solution then dried over MgSO4. Concentration and chromatography afforded the amide (107 mg, 97%) as colorless gum: Rf 0.32 (10:20, hexane-ethyl acetate); 1H NMR (CDCl3, 300 MHz) δ 7.64 (d, 2H, J=6.9 Hz), 7.42 (d, 2H, J=7.8 Hz), 7.18 (t, 1H, J=8.7 Hz), 6.36-6.91 (m, 7H), 6.26 (q, 1H, 1=6.9 Hz), 4.13 (m, 1H), 4.05 (m, 1H), 2.78 (m, 4H), 2.57 (m, 1H), 2.23 (m, 2H), 1.55 (br s, 3H); LCMS m/z 524 (M+H+, C25H25ClF2N2O4S requires 522.99).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06967196B1 |
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| Source dataset | uspto-grants-2005_11 |
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| ORD ID | ord-1f0b86dc67e0440b9424772dd145443a |
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| Source note | uspto-grants-2005_11 |
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