First definitive spectroscopic evidence for a stable intermediate in a sulfinyl-transfer reaction: reaction of dibenzo[1,2]oxathiin-6-oxide with sodium ethoxide in anhydrous ethanolElectronic supplementary information (ESI) available: summary of kinetic results for reaction of 1 with EtONa. See http://www.rsc.org/suppdata/cc/b0/b006439o/

Abstract

The UV spectral changes along with the kinetic results for the title reaction suggest that the reaction proceeds through a rapidly formed stable intermediate which decomposes slowly to the product.