Ceric ammonium nitrate (CAN)-promoted oxidative ipso-cyclization of unactivated biaryl
ynones with S-centered radicals (SCN/SCF3) to access spiro [5, 5] trienones has been …

A metal/peroxide-free involved simple cascade 6-exo-trig spirocyclization of tert-butyl nitrite
with biaryl ynones has been finished, which resulted in various NO2-modified spiro [5, 5] …

DTBP‐Mediated Cascade Spirocyclization and Dearomatization of Biaryl Ynones: Facile Access
to Spiro[5.5]trienones through C(sp3)−H Bond Functionalization - Zhang - 2021 - European …

Radical tandem bicyclization provides a novel approach for the preparation of complex
polycyclic compounds in synthetic chemistry. Herein, we first described a tandem radical …

While the radical spirocyclization of biaryl ynones for the construction of spiro [5.5] trienones
has been widely explored, we report in this work on a new N-centered radical initiated …

A Mn (III)-promoted radical oxidative ipso-annulation reaction of biaryl ynones with sodium
sulfinates to construct various substituted spiro [5.5] trienones has been explored in this …

A new, radical‐mediated, divergent bicyclization of 1, n‐enynes by α‐C (sp3)–H oxidative
functionalization of alkyl nitriles is described using the Sc (OTf) 3 and Ag2O system. The …

A new sulfonyl radical-triggered 6-endo-trig cyclization of unactivated 1, 5-enynes under
catalytic oxidation conditions for flexible synthesis of unprecedented unsymmetrical diaryl …

A direct and efficient strategy for the oxidative spirocyclization of biaryl ynones has been
developed, where nonsubstituted groups were on the para-position of the dearomatized aryl …

Abstract A K2S2O8‐promoted nitration/spirocyclization of biaryl ynones using inexpensive
NaNO2 as nitro source has been described. This cascade reaction is triggered by nitration of …