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ChemicalBook CAS DataBase List Ethyl 2-(4-(hydroxymethyl)piperidin-1-yl)pyrimidine-5-carboxylate
875318-46-0

Ethyl 2-(4-(hydroxymethyl)piperidin-1-yl)pyrimidine-5-carboxylate synthesis

8synthesis methods
4-Piperidinemethanol

6457-49-4

ETHYL 2-(METHYLSULFONYL)PYRIMIDINE-5-CARBOXYLATE

148550-51-0

Ethyl 2-(4-(hydroxymethyl)piperidin-1-yl)pyrimidine-5-carboxylate

875318-46-0

Stage 1 - Coupling Reaction: Under nitrogen protection, piperidine-4-methanol (2.48 g, 21.55 mmol) was stirred with K2CO3 (8.9 g, 64.65 mmol) in a 1:1 solvent mixture of DMF/MeCN (20 mL) for 10 min at room temperature. Subsequently, ethyl 2-methylsulfonyl-5-pyrimidinecarboxylate (5 g, 21.55 mmol) was added and the reaction continued to be stirred for 20 min. After completion of the reaction, the reaction mixture was diluted with deionized water (100 mL) and extracted with ethyl acetate (2 x 100 mL). The organic layers were combined, dried with anhydrous MgSO4 and concentrated under reduced pressure to remove the solvent to afford the orange solid product ethyl 2-(4-hydroxymethylpiperidin-1-yl)pyrimidine-5-carboxylate (5.70 g, 99% yield). Mass spectrometry analysis showed m/z = 266 [M + H]+. The product was used directly in subsequent steps without further purification.

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Yield:875318-46-0 99%

Reaction Conditions:

Stage #1: 4-piperidinemethanolwith potassium carbonate in N,N-dimethyl-formamide;acetonitrile at 20; for 0.166667 h;
Stage #2: ethyl 2-(methylsulfonyl)pyrimidine-5-carboxylate in N,N-dimethyl-formamide;acetonitrile; for 0.333333 h;

Steps:

3.1

Stage 1 - Coupling; Piperidin-4yl-methanol (2.48g, 21.55mmol) was stirred in 1 :1 DMF/MeCN (2OmL) with K2CO3 (8.9g, 64.65mmol) for 10 minutes at RT under a nitrogen atmosphere. Intermediate F (5g, 21.55mmol) was then added and the reaction allowed to stir for 20 minutes. It was then diluted with H2O (10OmL) and extracted with EtOAc (2 x 10OmL). The combined organic layers were dried (MgSO4) and the solvent removed in vacuo to give the product as an orange solid which was used in the next step without further purification (5.7Og, 99%). m/z = 266 [M+H]+.

References:

WO2008/53131,2008,A1 Location in patent:Page/Page column 51; 53