Morpholine → (1-Methyl-1H-pyrazol-4-yl)-morpholin-4-yl-methanone

Participants

Reaction Steps

To a solution of 1-methyl-1H-pyrazole-4-carboxylic acid (2.00 g, 15.9 mmol) in DCM (100 ml) and TEA (8.80 ml, 63.5 mmol), EDCHCl (3.65 g, 19.0 mmol) and HOBt (2.57 g, 19.0 mmol) were added under a nitrogen atmosphere at rt and stirred for 30 min. Morpholine (1.68 ml, 19.0 mmol) was then added to the reaction mixture and stirring was continued for 18 h. On completion of reaction (monitored by TLC), the reaction mixture was diluted with water and DCM. The organic layer was separated, dried over Na2SO4 and concentrated to get the crude product. Column chromatography afforded the desired product as off white solid. Yield: 1.20 g (39%); MS: m/z=196.4 ([M+H]+)

Provenance & Evidence