With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.39514-19-7,Ethyl 1-benzyl-3-oxopiperidine-4-carboxylate,as a common compound, the synthetic route is as follows.
Step A. 3-Oxo-piperidine-1 ,4-dicarboxylic acid 1 -tert-butyl ester 4-ethyl ester. A mixture of 1 -benzyl-3-oxo-piperidine-4-carboxylic acid ethyl ester (1 1 .31 g, 38 mmol), di-t-butyl dicarbonate (8.78 g, 40.2 mmol), Et3N (5.4 ml_, 38.7 mmol) and Pd(OH)2 on carbon (20percent on dry basis-Pearlman’s catalyst) (1 .3 g) were taken into EtOH (1 10 ml_). The mixture was hydrogenated at 60 psi for 24 h in a Parr bottle. The catalyst was removed by filtration and the filtrate was concentrated to dryness to tan solid. Crude residue was shaken well with hexane (100 ml_) and filtered. The filtrate was concentrated to yield the title compound (9.70 g, 94.25percent). MS (ESI) mass calcd. for Ci3H2i NO5, 271 .32; 1H NMR (400 MHz, CDCI3) 4.24 (q, J = 7.1 , 2H), 4.03 (s br, 2H), 3.49 (t, J = 5.6, 2H), 2.32 (m, 3H), 1 .47 (s, 9H), 1 .31 (t, J = 7.1 , 3H)., 39514-19-7
39514-19-7 Ethyl 1-benzyl-3-oxopiperidine-4-carboxylate 419705, apiperidines compound, is more and more widely used in various fields.
Reference：
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50202; (2011); A1;,
Piperidine – Wikipedia
Piperidine | C5H11N – PubChem