Thiophosgene, a building block for stabilizers bearing different types of protecting fragments

摘要

Thiophosgene was used as a reagent for connecting different light and/or UV protecting fragments. Reaction of thiophosgene with stabilizers bearing a hydroxyl group leads to the corresponding chlorothiocarbonates. Their subsequent reactions with other stabilizers bearing a hydroxyl group lead to an unsymmetrical thioester bearing two different protecting fragments. 2.4-Dihydroxybenzophenone and 2.2,6.6-tetramethylpiperidine derivatives were chosen as hydroxyl partners of thiophosgene. (C) 2004 Elsevier Ltd. All rights reserved.