The reaction of 1,1,1-tris(hydroxymethyl)ethane (1a), 2-ethyl-2-(hydro
xymethyl)-1,3-propanediol (1b), pentaerythritol (1c), or 1,2, 6-hexane
triol (1e) with epichlorohydrin in the presence of potassium hydroxide
in dimethyl sulfoxide gave the corresponding tri- or tetraglycidyl et
hers 3a-c, e in high yields. This procedure was also applicable to the
preparation of the phenolic polyglycidyl ethers.