HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
(-)-2-Butanol → [(1R)-1-Methylpropyl]1-[8-methoxy-5-(1-oxo-3H-isobenzofuran-5-yl)-[1,2,4]triazolo-[1,5-a]pyridin-2-yl]cyclopropanecarboxylate
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | (-)-2-Butanol | HCID 84682 | — |
| Edukt | 1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride | HCID 2723939 | — |
| Edukt | 1-[5-(1,3-dihydro-1-oxo-5-isobenzofuranyl)-8-methoxy[1,2,4]triazolo[1,5-a]pyridin-2-yl]Cyclopropanecarboxylic acid | HCID 68654944 | — |
| Katalysator | 4-(Dimethylamino)pyridine | HCID 14284 | — |
| Lösungsmittel | Dichloromethane | HCID 6344 | — |
| Produkt | [(1R)-1-Methylpropyl]1-[8-methoxy-5-(1-oxo-3H-isobenzofuran-5-yl)-[1,2,4]triazolo-[1,5-a]pyridin-2-yl]cyclopropanecarboxylate | HCID 71611997 | 30% |
Reaktionsschritte
A mixture of 1-[8-methoxy-5-(1-oxo-3H-isobenzofuran-5-yl)-[1,2,4]triazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxylic acid (400 mg, 1.095 mmol), (2R)-butan-2-ol (122 mg, 1.64 mmol), DMAP (147 mg, 1.20 mmol) and EDCI.HCl (231 mg, 1.20 mmol) in DCM (10 mL) was stirred at RT overnight before it was evaporated to dryness. Column chromatography (gradient MeOH 0 to 5% in DCM) followed by recrystallization in EtOH and freezedrying afforded the title compound as colorless powder (138 mg, 30%). HPLC-Retention time (XE Metode 7 CM): 2.33 minutes. Detected “M+1”-mass: 422.15.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US08940761B2 |
| Quelldatensatz | uspto-grants-2015_01 |
| ORD ID | ord-079ea4e0c8854584ade3a39a06254ecb |
| Quellennotiz | uspto-grants-2015_01 |