Electronic Effects on Stereochemistry in Eliminations from ... Brent R. Dohner and William H. Saunders, Jr.* ... Contribution from the Department of Chemistry, University of Rochester, Rochester, New York 14627. Received August 5, 1985 ... Abstract: Percentages of syn elimination have been determined by high-field NMR on the products of elimination from R,R,CHCHDX. The results for X = OTs with t-BuO-/t-BuOH at 60 OC were the following (R], R2, % syn): p- ...