(9) All new compounds gave satisfactory spectral and physical data. (IO) Sharpless, KB; Lauer, RF J. Am. Chem. SOC. 1973,95,2697. (11) We thank Professor B. Ganem for a sample of senepoxide as well spectra of it. We also thank Professor Ganem for a sample and spectra (12) We thank Professor J. D. White for a sample and spectra of of compound 16. compound 14. ... R. H. Schlessinger,* A. Lopes Department of Chemistry University of Rochester ...