Answers are grounded in this paper and cite their sources.
The cycloaddition reactions of some aryl conjugated p ‐benzoquinones with nitrilimines were studied. Depending upon the reaction conditions mono‐ and/or bis‐ adducts were isolated only from carbon‐carbon double bond. The structure determination was unequivocally established by an X‐ray analysis carried out on a bis‐adduct. The observed regio‐, as well as site‐selectivity, was qualitatively correlated with frontier molecular orbitals of the reacting species.
No takes yet. Share an insight, caveat, or question.
Argyropoulos et al. (1990) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: