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. ... Conjugated esters were instantaneously hydrodimerized at room temperature by use of the reduction system, Sml 2 -THF-HMPA, in the presence of proton sources. A perfect stereoselection was realized in the reaction of N,N-dibenzyl crotonamide. ... A perfect stereoselection was ...