ChemicalBook CAS DataBase List 4-(4-Cyano-benzyl)-piperidine-1-carboxylic acid tert-butyl ester

4-(4-Cyano-benzyl)-piperidine-1-carboxylic acid tert-butyl ester synthesis

5synthesis methods

Product Name:4-(4-Cyano-benzyl)-piperidine-1-carboxylic acid tert-butyl ester
CAS Number:1021363-43-8
Molecular formula:C18H24N2O2
Molecular Weight:300.4

333987-57-8 Synthesis

333987-57-8
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24424-99-5 Synthesis

24424-99-5
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4-(4-Cyano-benzyl)-piperidine-1-carboxylic acid tert-butyl ester

1021363-43-8
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Yield:1021363-43-8 74%

Reaction Conditions:

in 1,4-dioxane;water at 20;

Steps:

17.b

To a solution of 4-piperidin-4-ylmethyl-benzonitrile (3.6 g, 18 mmol) in dioxane (105 mL) and water (52 mL) di-tert-butyl dicarbonate (5.44 g, 25 mmol) was added and the reaction mixture was stirred overnight at room temperature. After concentration the residue was partitioned between water and chloroform, the organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to yield 4.0 g (74 %) of the title compound as a yellowish oil, which solidifies on standing. MS (EI) 323.1 (M+Na⁺).

References:

WO2008/50168,2008,A1 Location in patent:Page/Page column 31