Friedel–Crafts benzylation and phenethylation reactions of several aromatic compounds with benzyl and phenethyl benzothiazol-2-yl carbonate derivatives were carried out in the presence of scandium triflate (Sc(OTf)3) as a catalyst. Suitable combinations of the leaving group of carbonates and acid promoters that generate cationic alkyl species were examined.
Highly functionalized, unsymmetrical disulfides (presumed metabolites of a bioactive sulfide) were synthesized by a base-induced, crossed reaction of two different symmetrical disulfides. The reaction was also applied to the preparation of a vitamin B1 derivative, Prosultiamine.
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