Regio and stereochemistry in 2+2 intramolecular photocycloaddition of substituted olefins to cyclopentenones
作者:D. Becker、N. Klimovich
DOI:10.1016/s0040-4039(00)76526-9
日期:1994.1
The influence of substituents on the regio- and stereochemistry of the intramolecular [2+2] photocycloaddition of compound 1–8 has been studied. All photoadducts are formed via parallel approach and syn-addition. The endo/exo ratio was used as indicator for the structure of the diradical intermediates.