Potassium Iodide → 1-[5-Chloro-2-(4-methoxy-benzyloxy)-benzyl]-5-methyl-1h-pyrazole-3-carboxylic acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-(5-chloro-2-hydroxy-benzyl)-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester 2 0.2 g (0.6 mmol) in DMF (5 mL) were added potassium carbonate (0.23 g, 1.7 mmol), potassium iodide (0.1 g, 0.6 mmol) and 4-methoxybenzyl chloride (0.1 ml, 0.7 mmol). The resulting mixture was heated at 100° C. in an Emrys microwave reactor for 30 minutes. The volatiles were removed in vacuo. The crude product was purified on silica to yield 1-[5-chloro-2-(4-methoxy-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester 13 as a white solid.

Provenance & Evidence