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. ... Copper salts, such as CuCl, CuI, CuCl 2 and Cu(OTf) 2 , were used to catalyze the intramolecular hydroamination of allenylamines to provide the corresponding 3-pyrrolines or 2-alkenylpyrrolidines. ... Copper salts, such as CuCl, CuI, Cucl 2 and Cu(OTf) 2 , were used to catalyze the intermolecular ...