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 …

A photosensitizer-free, highly efficient sunlight-promoted tandem [3+ 2]/[4+ 2] annulation of
unsaturated α-bromocarbonyls with o-alkynylanilines was developed, and allowed for …

Copper-or silver-catalyzed cascade radical addition/dearomative spirocyclization of biaryl
ynones with fluoroalkyl bromides or diethylphosphite has been realized for the first time. This …

A novel method for chemoselective difunctionalization of activated alkynes for synthesizing 3-
alkylated spiro [4, 5]-trienones, thiaspiro [4, 5]-trienones and spirolactams has been …

Abstract A novel [4+ 1] spiroannulation of o‐& p‐bromophenols with α, β‐unsaturated imines
has been developed for the direct synthesis of a new family of azaspirocyclic molecules …

A photocatalysed dearomative β-hydroborylation reaction of indole derivatives with NHC-
boranes has been accomplished. This protocol shows a broad substrate scope with …

A visible-light-induced photocatalytic intermolecular dearomative cyclization of 2-bromo-1, 3-
dicarbonyl compounds and alkynes afforded biologically important spirocarbocycle …

Unreactive C–N bond activation of anilines was achieved by photoinduced aerobic
borylation. A diverse range of tertiary and secondary anilines were converted to aryl …

The cleavage of an unactivated aryl nitro group triggered by alkyl radicals enables a
dearomative cyclization, affording diversified alkylated spiro [5.5] trienones in good yields …

A highly efficient ortho-dearomative cyclization reaction between alkynes and 2-bromo-2-(2-
methoxybenzyl) malonate via visible light-induced photoredox catalysis has been reported …