New paradigms in cycloaddition face-selectivities: remarkable effect of remote substituents in singlet oxygen addition to hexacyclo[7.5.1.01,6.06,13.08,12.010,14]pentadeca-2,4-diene system
Abstract
Different modes of direct through-space interactions between remote substituents and an approaching reagent are indicated as important additional controlling factors of face selectivity in singlet oxygen cycloaddition to facially differentiated cyclohexa-1,3-dienes.