Thioallenoates in catalytic enantioselective [2+2]-cycloadditions with unactivated alkenes.

The application of thioallenoates to catalytic enantioselective [2+2]-cycloadditions with unactivated alkenes is reported. In many cases, the thioallenoates examined exhibit superior reactivity and selectivity compared to the allenic esters generally used in these cycloadditions. Image 1 [ABSTRACT FROM AUTHOR]