Highly efficient oxidative annulation of alkynes furnished diversely substituted pyran [2, 3, 4-
de] chromene-2-one derivatives and related polycycles in moderate to high yield. The …

A new cobalt-catalyzed phenolic OH-assisted C–H functionalization of 2-vinylphenols with
allenes to give various 2 H-chromenes is described. It is the first time that allenes are used …

Cobalt (III)-catalyzed (3+ 2) oxidative annulation of enamides and alkynes for the synthesis
of pyrroles has been developed under exceedingly mild conditions. The reaction works well …

Double C–H activations of C (5)–H and Csp2–H of 2-substituted N-vinyl-or arylimidazoles
were realized without heteroatom-directing assistance by rhodium (III) catalyst. A …

A Cp* Co (III)-catalyzed [5+ 2] C–H annulation reaction of 2-vinylphenols with ynamides was
developed. The reaction led to the efficient synthesis of valuable 2-aminobenzoxepines in …

The present study reports the development of a palladium-catalyzed oxidative annulation/
nucleophilic substitution sequence affording a library of alkenylated benzopyrans using 2 …

A variety of biologically active molecules, pharmaceuticals, and natural products consist of a
nitrogen-containing heterocyclic backbone. The majority of them are isoquinolones, indoles …

A new procedure for oxidative coupling of aromatic and acrylic acids with alkynes has been
developed using abundant, nontoxic, and air stable Cp* Co (III) catalyst. The coupling …

Transition-metal-catalyzed C–H activation followed by oxidative cyclization with unsaturated
coupling partners has been a valuable synthetic tool for the multiring molecular scaffolds …

A Rh (III)-catalyzed highly efficient and regioselective functionalization of diverse C–H bonds
of naphthylcarbamates for oxidative annulation with alkynes has been developed. The …