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. ... The reaction of β-oxosulfides of benzothiazole with Michael acceptors, in liquid tetrabutylammonium bromide and sodium bicarbonate as base, allows a stereoselective synthesis of spirocyclopropanes. ... To circumvent some of these problems, in the first instance, we chose as pronucleophiles ...
