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

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Goverdhan Mehta, R. Uma, M. N. Jagadeesh and Jayaraman Chandrasekhar


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.


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