![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The selectivity of some reactions of substituted 1,2-glycols adsorbed in the interlayer space of layer silicates (homoionic montmorillonites) has been studied. By thermal treatment, pinacol rearranges quantitatively to pinacolone in the intracrystalline environment of these solids, the reaction being clearly preferred to the intramolecular dehydration. In the same way 2,3-diphenyl-2,3-butanediol gives two ketones, the reaction being also different from that taking place in homogeneous conditions. The extent and the selectivity of both reactions have been correlated with the acidity of the interlayer cations.