Mechanochemical synthesis of β-cyclodextrin urea derivatives under reactive CO2 atmosphere by Staudinger aza-Wittig reaction†
Abstract
Various ureido β-cyclodextrins can be easily synthesised by mechanochemistry from azido-β-cyclodextrins, carbon dioxide and amino derivatives. The reaction was carried out with short reaction times, without solvents and without thermal activation, greatly reducing the environmental impact of the synthesis.