Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Vinyl p-aminophenylsulfone and methyl vinyl sulfone were shown to react, as Michael acceptors, with a broad range of secondary and primary amines using Amberlyst as catalyst. The reactions occurred, generally, with high yields and in a short time. ... As part of an ongoing ...