Triethylamine → 1-(2-Methoxyethyl)-5-(tetrahydro-2H-pyran-4-ylmethyl)-1H-pyrazole-3-carbonitrile

Participants

Reaction Steps

The method described in Part F of Example 3 was used to treat 1-(2-methoxyethyl)-5-(tetrahydro-2H-pyran-4-ylmethyl)-1H-pyrazole-3-carboxamide (3.41 g, 12.7 mmol) with trifluoroacetic anhydride (1.98 mL, 14.0 mmol) in the presence of triethylamine (3.86 g, 38.1 mmol) with the following modifications. Extractions were carried out four times with chloroform, and the automated flash chromatography column was eluted with ethyl acetate. 1-(2-Methoxyethyl)-5-(tetrahydro-2H-pyran-4-ylmethyl)-1H-pyrazole-3-carbonitrile (3.16 g) was obtained as a colorless oil.

Provenance & Evidence