P. Areces et al., DIASTEREOSELECTIVE SYNTHESIS OF CHIRAL THIIRANES BY 1,3-DIPOLAR CYCLOADDITION OF IMIDAZO[2,1-B]THIAZOLIUM-4-OLATE SYSTEMS WITH AROMATIC-ALDEHYDES, Tetrahedron letters, 34(18), 1993, pp. 2999-3002
The regiospecific and diastereoselective 1,3-dipolar cycloaddition of
imidazo[2.1-b]thiazolium-4-olate systems with aromatic aldehydes gives
thiiranes, which undergo thermal decomposition to olefins.