Stereochemistry of eight-membered heterocycles 1. Conformations of 6-oxo-, and 6,6-dioxodibenzo-[d,g][1.3.2]dioxathiocin-12-ones

Abstract

6,6-Dioxodibenzol[d,g][1.3.2] dioxathiocin-12-one in solution has the chair conformation; for 6-oxodibenzo [d,g][1.3.2]dioxathiocin-12-one, the axial chair conformation is in equilibrium with one of the flexible forms. © 1983 Plenum Publishing Corporation.