Download full text in 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. ... Conjugate additions on α-phenylthio-α,β-unsaturated oxazolines. Novel synthesis of 3,4-disubstituted coumarins. ... Nucleophilic addition of organolithium, Grignard and hydride reagentsto α-phenylthio-α,β-unsaturated oxazolines is regioselective and occurs in a 1,4-fashion. ...