Reactions of vinyl 2,3-epoxypropyl ether and 2-(vinyloxy)ethyl 2,3-epoxypropyl ether with 4,5-dihydro-1 H-pyrazoles give, respectively, 3-vinyloxy-1-(4,5-dihydro-1 H-pyrazol-1-yl)propan-2-ols and 3-(2-vinyloxyethoxy)-1-(4,5-dihydro-1 H-pyrazol-1-yl)propan-2-ols in 70–91% yield.