HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Aluminium lithium hydride → 5-(Hydroxymethyl)-2-((5-(trifluoromethyl)pyridin-2-yl)oxy)benzonitrile
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Aluminium lithium hydride | HCID 21226445 | — |
| Edukt | 3-Cyano-4-(5-trifluoromethyl-pyridin-2-yloxy)-benzoic acid methyl ester | HCID 66825341 | — |
| Katalysator | Water | HCID 962 | — |
| Lösungsmittel | Tetrahydrofuran | HCID 8028 | — |
| Produkt | 5-(Hydroxymethyl)-2-((5-(trifluoromethyl)pyridin-2-yl)oxy)benzonitrile | HCID 66825657 | 60,7% |
Reaktionsbedingungen
| Temperatur | -55 °C |
|---|
Reaktionsschritte
To a solution of 3-cyano-4-(5-trifluoromethyl-pyridin-2-yloxy)-benzoic acid methyl ester (23 g, 0.070 mol) in anhydrous THF (200 mL) was added portionwise LiAlH4 (4.07 g, 0.11 mmol) at −78° C. The reaction mixture was warmed to −55° C. slowly and stirred for 20 mins, diluted with water (3 mL 0.16 mmol, slow addition), filtered and concentrated. Purification via column chromatography on silica gel (petroleum ether/ethyl acetate=10/1 to 5/1) afforded the title product (12.5 g) as a colorless oil. LCMS: rt=2.81 min, [M+H+]=295.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US08637536B2 |
| Quelldatensatz | uspto-grants-2014_01 |
| ORD ID | ord-eb2076152c6c4185b57b9e794c73f997 |
| Quellennotiz | uspto-grants-2014_01 |