反应详情

7.27 g of 2-chloro-3-(2,3-epoxy-propoxy)-pyrazine and 7.35 g of 1-(4-piperidyl)-3-phenyl-2-imidazolidinone in 120 ml of isopropanol are stirred for 24 hours at approx. 20° C. The reaction mixture is then concentrated in a water jet vacuum. The residue crystallises from ether and yields 1-{1-[2-hydroxy-3-(3-chloro-pyrazin-2-yloxy)-propyl]-4-piperidinyl}-3-phenyl-imidazolidin-2-one with a melting point of 122°-124° C.

1. concentrationThe reaction mixture is then concentrated in a water jet vacuum
2. customThe residue crystallises from ether