Stereoselective synthesis of different cyclic tetrasiloxane isomers depending on the superacid catalyst employed

Abstract

When the hydrolytic condensation of APDEMS was performed using various superacid catalysts (HNNf2 and HNHf2), cyclic tetrasiloxanes with different stereostructures (all-cis and cis–trans–cis) were selectively synthesized based on the catalyst type.