Acetone → Carbamic acid, propyl-, 1-(1-methylethyl)-1H-pyrazol-4-yl ester

Participants

Reaction Conditions

Reaction Steps

8.5 g (0.1 mol) of n-propyl isocyanate were added dropwise to a solution of 12.6 g (0.1 mol) of 1-isopropylhydroxy-pyrazole and 3 drops of triethylamine in 50 ml of acetone. The reaction mixture was then further stirred for 4 hours at 40° C. and the solvent was distilled off in vacuo. 20 g (95% of theory) of 1-isopropyl-pyrazol-4-yl N-n-propylcarbamate were obtained as a brown oil with a refractive index of nD22 =1.4885.

Provenance & Evidence