Methyl 1-(pyridin-4-yl)piperidine-4-carboxylate → (1-(Pyridin-4-YL)piperidin-4-YL)methanol

Temperatur

0 °C

1-(4-Pyridinyl)piperidine-4-methanol was prepared using a procedure similar to the following: A solution of methyl N-(4-pyridinyl)isonipecotate (600 mg, 2.72 mmol) in tetrahydrofuran was added to a solution of lithium aluminum hydride (100 mg) in tetrahydrofuran (14 mL) cooled to 0° C. Upon consumption of the starting material (0.5–2 h), the mixture was treated with water (0.10 mL), 15% aqueous sodium hydroxide (0.10 mL), and water (0.30 mL). After 0.25 h, the mixture was sonicated for 0.25 h, then poured into a mixture of ethyl acetate, water, sodium tartrate, and potassium tartrate. The aqueous layer was extracted twice with ethyl acetate and the combined extracts were dried (magnesium sulfate), filtered, and concentrated in vacuo to yield 357 mg (68%) of 1-(4-pyridyl)piperidine-4-methanol, which was used without further purification.

1. custom1-(4-Pyridinyl)piperidine-4-methanol was prepared
2. customUpon consumption of the starting material (0.5–2 h)
3. additionthe mixture was treated with water (0.10 mL), 15% aqueous sodium hydroxide (0.10 mL), and water (0.30 mL)
4. customthe mixture was sonicated for 0.25 h
5. additionpoured into a mixture of ethyl acetate, water, sodium tartrate, and potassium tartrate
6. extractionThe aqueous layer was extracted twice with ethyl acetate
7. dry with materialthe combined extracts were dried (magnesium sulfate)
8. filtrationfiltered
9. concentrationconcentrated in vacuo

ORD-Eintrag

ord-a34057d803f34783a55cc3f8b818331f

Quelldatensatz

uspto-grants-2006_10

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07129245B2