Mechanistic Analysis of the Photocycloaddition of Silyl-Tethered Alkenes
作者:Steven A. Fleming、Alexander A. Parent、Ephraim E. Parent、James A. Pincock、Lise Renault
DOI:10.1021/jo7014664
日期:2007.12.1
order to better understand the regio- and stereoselectivity of photocycloadditionbetween silyl-tethered cinnamyl groups. This study allows us to conclude that the 2 + 2photocycloadditionbetween alkenes is not a Woodward−Hoffmann orbital symmetry controlled event. The most consistent explanation for the excellent regio- and stereoselectivity is that the photocycloaddition is conformationally controlled