Tetsuo Nozoe, Yasuo Toyooka; Diels-Alder Reaction of Troponoids. II. Adducts of Halotropones and Maleic Anhydride, Bulletin of the Chemical Society of Japa
No takes yet. Share an insight, caveat, or question.
Nozoe et al. (1961) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: