Answers are grounded in this paper and cite their sources.
Spirocyclic structures can be obtained by an ipso-type radical cyclisation onto a furan or a suitably substituted pyrrole followed by oxidation of the stabilised radical adduct.
No takes yet. Share an insight, caveat, or question.
Guindeuil et al. (2006) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: