HuagongsheHuagongshe Chemistry Print Report · For research reference only
Water → (+)-2-(6-Methoxy-naphthalen-2-yl)-propionic acid 1-(3-cyclopropyl methoxy-4-difluoromethoxy-phenyl)-2-(3,5-dichloro-pyridin-4-yl)-ethyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Naproxen | HCID 156391 | — |
| Reactant | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| Reactant | 1-(3-Cyclopropylmethoxy-4-difluoromethoxy-phenyl)-2-(3,5-dichloro-pyridin-4-yl)-ethanol | HCID 59443760 | — |
| Catalyst | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | (+)-2-(6-Methoxy-naphthalen-2-yl)-propionic acid 1-(3-cyclopropyl methoxy-4-difluoromethoxy-phenyl)-2-(3,5-dichloro-pyridin-4-yl)-ethyl ester | HCID 67494397 | 92.9% |
Reaction Steps
Compound (3) (12.0 g) was dissolved in DMF (100 ml) then (S)-2-(6-methoxy-naphthalen-2-yl)-propionic acid (7.5 g), 4-dimethylaminopyridine (3.6 g), and 1-ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride (5.7 g) was added. After stirring at rt for 4 hours, water (1000 ml) is added. The mixture was extracted with EtOAc (500 ml×2), the combined organic layers are dried over sodium sulphate, and the solvent was removed by evaporation under reduced pressure to afford 17.0 g of an oil which is crystallized from EtOH thus obtaining 11.5 g of the title compound as mixture of diastereomers (11) and (13).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08440834B2 |
| Source dataset | uspto-grants-2013_05 |
| ORD ID | ord-6699903239e341c7ad069038dc911f8d |
| Source note | uspto-grants-2013_05 |