Mobility of configuration and conformation in the “push−pull” cross-conjugated derivative 1,3-diphenyl-2-(p-dimethylaminophenyl)iminopropane-1,3-dione has been investigated by NMR. The energetics of the thermal process that interconnects the syn- and anti-configurations of the
imino group with the atropisomeric conformations of the skewed benzoyl groups are defined. It is proposed that a symmetric Y-delocalized
transition state thermally interconnects the inversion of the imino configurations with the mobile interchange of the skewed benzoyl conformations.
This connection is observable through a unique NMR window.
scite is a Brooklyn-based startup that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.