The imino Diels–Alder reaction of (1) with 2-t-butyldimethylsilyloxycyclohexadiene (2) gave after acidic work-up mainly the bicyclic enol ethers (5a)(for which a novel X-ray crystal structure determination is reported) and (5b) together with small amounts of bicyclic ketones (3a,b) and cyclohexenones (4a,b).
No takes yet. Share an insight, caveat, or question.
Birkinshaw et al. (1988) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: