M. Avalos et al., A NOVEL HIGHLY DIASTEREOSELECTIVE SYNTHESIS OF CHIRAL DIHYDROTHIOPHENES FROM MESOIONIC COMPOUNDS, Journal of the Chemical Society, Chemical Communications, (21), 1995, pp. 2213-2214
Thioisomunchnones undergo 1,3-dipolar cycloaddition with chiral nitroa
lkenes to afford stereoselectively 4,5-dihydrothiophenes by means of a
n unprecedented fragmentation of cycloadducts; the structures of these
products have been established by single crystal X-ray structure anal
yses.