... Kenneth K. Andemen,* Sumalee Chumpradit,2 and Debra J. McIntyre2 Department of Chemistry, University of New Hampshire, Durham, New Hampshire 03824 Received November 23, 1987 ... 0 1988 American Chemical Society Page 2. 4668 J. Org. Chem., Vol. 53, No. 20, 1988 ...