Topic
Annulation
About: Annulation is a research topic. Over the lifetime, 10152 publications have been published within this topic receiving 189701 citations.
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TL;DR: The benzofuranone-indolyloxazole fragment of the polycyclic marine natural product diazonamide A was prepared from tryptamine by an intramolecular Heck annulation of an α,β-unsaturated aryl ester.
59 citations
59 citations
TL;DR: The first phosphine-catalyzed [3 + 3]-domino annulation reaction of ynones and azomethine imines has been developed and the functionalized hydropyridazine derivatives were obtained in good to excellent yields with highly stereoselectivies.
59 citations
TL;DR: Mechanistic investigations suggest that the photo excited is reduced by DIPEA to form the corresponding radical anion, which is again excited by 455 nm light and yields the product after rearomatization.
59 citations
TL;DR: This feature article critically analyse the strategic development and the efficient transformation of azoalkenes to chiral heterocycles and α-functionalized ketone derivatives since 2010 and the plausible mechanism for each reaction model is discussed.
59 citations