2-Chloropyrimidine → HCID 59579963, compound

Participants

Reaction Conditions

Reaction Steps

Potassium tert-butoxide (2.4 g, 21.23 mmol) is added to a mixture of ethyl 3-amino-1H-pyrazole-4-carboxylate (3.0 g, 19.3 mmol) and 2-chloropyrimidine (2.2 g, 19.3 mmol) in 50 mL of anhydrous dioxane. The reaction mixture is heated to 100° C. and stirred for 2 h. The solvent is removed in vacuo, and the residue is partitioned between EtOAc and water (50 mL each). The aqueous layer is extracted two more times with EtOAc (40 mL each), and the combined organic extracts are dried (Na2SO4), filtered, and evaporated in vacuo to give a yellow/brown oily solid. This crude product is triturated with EtOAc to give the title compound as a white solid.

Provenance & Evidence