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. ... Reaction of dithioester sulfines 4 with amines leads to thioamides 5. Sulfine 7, obtained from (−)-thiocamphor, reacts with primary amines at room temperature to afford chiral imines 8. Carbophilic addition, instead of thiophilic addition, has thus been evidenced.