1-(5-Nitropyridin-2-yl)azetidin-3-ol → 1-(5-Aminopyridin-2-yl)azetidin-3-ol

Participants

Reaction Steps

A suspension of 0.34 g (1.74 mmol) of 2-(3-hydroxyazetidin-1-yl)-5-nitropyridine, prepared in the preceding stage, and 9 mg of Pd/C at 10% in 10 mL of ethanol is stirred vigorously at 20° C. under 5 atm of hydrogen for 4 hours. After this time, the mixture is filtered on a Celite pad and then concentrated at reduced pressure. The resultant product is purified by chromatography on a silica column, eluting with a mixture of dichloromethane and methanol. We thus obtain 0.1 g of the expected product, which will be used as it is in the rest of the synthesis.

Provenance & Evidence