Dr. Sereda, what is the product of epoxidation (An epoxide - GS). and what is its significance? (It is an active electrophilic ether. Very useful in organic synthesis, in particular, synthesis of primary alcohols, trans-diols, and epoxide resins. - GS). What kind of reactant would have to be present to make a trans-diol? (Epoxide and OH- - GS).