ACKNOWLEDGMENTS This work has been generously supported by the National Research Council of Canada, to whom we are indeed grateful. Thanks are extended to Mrs. EG Brion for deter- mining many of the nmr spectra and to Mrs. A. Aldridge for determining the molecular weight. ... 1. AL HENNE, R. L. PELLEY, and R. M. ALM. J. Am. Chem. Soc. 72, 3370 (1950). 2. H. SCHECTER and F. CONRAD. J. Am. Chem. Soc. 72, 3371 (1950). 3. D. R. HUSTED ...
