Syam Krishnan, K; Suresh, E; Saumini Mathew; Radhakrishnan, K V
(Thieme, 2006)
Pentafulvenes undergo consecutive dipolar cycloadditions with various substituted oxidopyrylium betaines resulting in the formation of a new class of structurally interesting 7-5-8-fused oxabridged tricyclic molecules.