Ethyl 4-piperidinecarboxylate → 1-(4-Pyrimidinyl)-4-(ethoxycarbonyl)piperidine
Reaction equation
Cl.Cl[C:3]1[CH:8]=[CH:7][N:6]=[CH:5][N:4]=1.[NH:9]1[CH2:14][CH2:13][CH:12]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:11][CH2:10]1>>[N:6]1[CH:7]=[CH:8][C:3]([N:9]2[CH2:14][CH2:13][CH:12]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:11][CH2:10]2)=[N:4][CH:5]=1Participants
3
Procedure
4-Chloropyrimidine hydrochloride was reacted with ethyl piperidine-4-carboxylate to give ethyl 1-(4-pyrimidinyl)piperidine-4-carboxylate in 46% yield. A mixture of the material so obtained (0.5 g), 2N aqueous hydrochloric acid (5 ml) and THF (15 ml) was stirred and heated to reflux for 18 hours. The mixture was evaporated and the residue was washed with ethyl acetate. There was thus obtained 1-(4-pyrimidinyl)piperidine-4-carboxylic acid hydrochloride salt (0.49 g, 95%);
Sources & evidence
- ORD record
- ord-898d5a453c944cdc8d5ce938a58e53ac
- Source dataset
- uspto-grants-2000_07