ipso-Annulation represents an attractive approach to synthesize a variety of spirocyclic
compounds having a quaternary carbon center. Furthermore, these compounds also serve …

The last two decades or so have witnessed an upsurge in defining the art of designing
complex natural products and nature-inspired molecules. Throughout these decades …

A mild and convenient visible-light-induced method has been developed for the construction
of 3-sulfonyl and 3-sulfenyl azaspiro [4, 5] trienones through metal-free difunctionalization of …

The first copper‐catalyzed highly chemo‐, regio‐, diastereo‐, and enantioselective
Kinugasa/Michael domino reaction for the desymmetrization of prochiral cyclohexadienones …

Herein, we report an efficient synthesis of azaspiro [4, 5]‐decanes and azaspiro [4, 5]‐
trienones by the radical cascade spirocyclization of N‐benzylacrylamides or N …

An unprecedented copper-catalyzed ipso-annulation reaction of N-(p-methoxyaryl)
propiolamides with 1, 3-diketones has been developed, which enables the assembly of …

A novel and convenient photo-mediated halogenated spirocyclization of N-(p-methoxyaryl)
propiolamides has been developed. The photolysis of phenyliodine bis …

An efficient and convenient strategy to synthesize diverse 3-sulfonylspiro [4, 5] trienones has
been developed. This ipso-carbosulfonylation of alkynes proceeds by visible-light catalysis …

The oxidative dearomatization of phenols with the addition of nucleophiles to the aromatic
ring induced by hypervalent iodine (III) reagents and catalysts has emerged as a highly …

A visible-light-induced brominated spirocyclization of N-arylpropiolamides and CBr 4 for the
synthesis of 3-bromo-azaspiro [4, 5] trienones is reported here. This process allows the …