All articles of this category Naphthalene annellation of norbornyl compounds can be readily achieved in good yields through in situ trapping of dibromonaphthoquinone ( 5 ), generated from 4 and sodium iodide, by the dienophilic norbornyl substrate. The dienophiles used include norbornadiene (which gave mono-adduct 8b or bis-adduct 3a depending on the conditions), norbornene, benzonorbornadiene ( 11 ), diene 9 , and 13 .
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Paddon‐Row et al. (1986) studied this question.