... (9) L. M. Jackman and S. Sternhell, "Apphcation of Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry," 2nd ed, Pergamon Press, New York, NY, 1969, pp 163-192. (10) AD Josey, CL Dickinson, KC Dewhirat, and €3. C. McKuslck, J . 078. Chem., 82, 1941 (1967). ...