M. Hoffer, R. Duschinsky, JJ Fox and N. Yung (THIS JOURNAL, 81, 4112 (1959)) and was to have been published simultaneously; unfortunately the manuscript was filed pending acceptance of the later Communication, and then overlooked and not put in process of publication until after the other had appeared.-The Editors.(1) DM Brown, DB Pariher, CB Reese and A. Todd, J. Chem.