Facile Preparation of the Water-Soluble Singlet Oxygen Traps Anthracene-9,10-divinylsulfonate (AVS) and Anthracene-9,10-diethylsulfonate (AES) via a Heck Reaction with Vinylsulfonate - Nardello, Véronique; Aubry, Jean-Marie; Johnston, Peter; Bulduk, Ibrahim; de Vries, André H M; Alsters, Paul L (Synlett, 2005)