tert-Butyl 3,3-dimethyl-4-oxopiperidine-1-carboxylate → HCID 68707465, compound
Reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C:11](=[O:14])[C:10]([CH3:16])([CH3:15])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]>COC(OC)N(C)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][C:12](=[CH:6][N:8]([CH3:13])[CH3:9])[C:11](=[O:14])[C:10]([CH3:16])([CH3:15])[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]Participants
3
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 130 °C
Procedure
3,3-Dimethyl-4-oxo-piperidine-1-carboxylic acid tert-butyl ester (5 g, 22 mmol) was dissolved in dimethyl formamide dimethylacetal (25 mL) and heated at reflux for 2 h. The reaction mixture was then heated to 130° C. for 1 h via microwave, and concentrated to give 6.43 g (quant.) as an oil which used without purification. 1H-NMR (CDCl3, 500 MHz) δ 1.07 (s, 6H), 1.45 (s, 9H), 3.06 (s, 6H), 3.37 (m, 2H), 4.57 (m, 2H), 7.41 (bs, 1H).