Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Acetyl chloride | HCID 6367 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | HCID 67374073 | HCID 67374073 | — |
| Catalyst | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 67373992 | HCID 67373992 | 55.1% |
Reaction Steps
To a solution of 5-[3-butyl-6-(1-methyl-piperidin-4-yloxy)-pyridazin-4-yl]-2-cyclohexyloxy-phenylamine trihydrochloride (0.2 mmol, 110 mg) in DCM (1.0 mL) at 0° C. was added acetyl chloride (0.4 mmol, 29 μL), DIEA (0.4 mmol, 70 μL) and DMAP (5 mg). And the mixture was stirred at room temperature for 1 hour. It was then condensed in vacuo and the residue was purified by silica gel chromatography (DCM to DCM+10% 2N NH3 in MeOH) to give a colorless sticky solid, which was dissolved in DCM (1.0 mL), 2N HCl in ether (1.0 mL) was added, kept at room temperature for 10 min, condensed, triturated with hexanes to provide the title compound (61 mg). LCMS: m/z 482 [M+1]. 1H NMR (400 MHz, CDCl3): δ 8.43 (1H, s), 7.89 (1H, s), 6.97 (2H, s), 6.81 (1H, s), 5.60 (1H, bs), 4.37-4.43 (1H, m), 3.10-3.45 (4H, m), 2.90-2.95 (2H, m), 2.81 (3H, s), 2.35-2.61 (4H, m), 2.23 (3H, s), 1.25-1.87 (14H, m), 0.83 (3H, t).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08431575B2 |
|---|
| Source dataset | uspto-grants-2013_04 |
|---|
| ORD ID | ord-e11fb8e592434f09912daaad192fd698 |
|---|
| Source note | uspto-grants-2013_04 |
|---|