We disclosed a general visible light-promoted and electron–donor–acceptor complex-
enabled cascade reaction of alkynes via a radical addition/cyclization cascade sequence …

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] …

A direct and efficient visible-light-induced cascade cyclization reaction of aryl ynones with 4-
alkyl-DHPs for the divergent synthesis of indenones, thioflavones and spiro [5.5] trienones …

The employing visible light to drive organic transformations is the most promising choice to
meet the needs for green synthesis, in which the reactions promoted by visible light may …

A strategy utilizing silver-catalyzed oxidative decarboxylation radical cascade cyclization of
arylthiodifluoroacetic acids with alkenes for the simple and efficient preparation of …

Free radical three-component nitration/spirocyclization of unsaturated sulfonamides/amides
with tert-butyl nitrite was developed for the construction of diverse NO2-revised 4-azaspiro …

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 …

Bromine induced spiro cyclization of biaryl ynones facilitated the synthesis of spiro [5, 5]
trienones suitable for extended functionality at the C (3′) position. Herein, a step-economic …

Herein, a novel electrochemical arene radical cation promoted dearomative spirocyclization
of biaryl ynones with alcohols is described, providing a conceptually novel transformation …

A metal‐free radical spirocyclization of biaryl ynones with diselenides is developed,
providing selenated spiro [5.5] trienones in moderate to good yields. This protocol features …