24 65 a All yields arc for isolated pure products. All products have been fully characterized by spectral menns and elemental composition established by combuTtion analysis and/or hiph-resolution inus spectroscopy. is the possibility that the alkoxybis (su1fone) group may serve as a protected form of a highly reactive acylating agent. Transformations at other reactive functional groups such as a reduction of or organometallic addition to a carbonyl ...