A cobalt acetylacetonate catalyzed oxidative diketonation of alkynes via C (sp)–H bond
functionalization has been described. The reaction involves a free-radical mechanism …

A new metal-free tert-butyl hydroperoxide (TBHP)-mediated carbonyl C (sp2)–H oxidative
alkynylation of aldehydes with ethynyl benziodoxolones (EBX) for the synthesis of ynones is …

The rapid incorporation of alkyl and acyl groups into C–H bonds of N-heterocycles is in
demand for the development of lead candidates in drug discovery. Herein, we report the …

A new, simple method for selectively synthesizing alkyl aryl ketones has been developed by
palladium-catalyzed oxidative coupling of trialkylamines with aryl iodides. In the presence of …

The development of a first row transition metal (cobalt)-based catalyst for the as yet
unexplored C–H activation-driven reaction of 1, 3-diynes, themselves a functional class of …

Herein we develop a new “cobalt (II)/organic oxidant” catalytic system for the selective
activation of 1°, 2°, and 3° C (sp3)–H bonds to construct C–N and C–O bonds, respectively …

A new method for cobalt-catalyzed C (sp2)–H functionalization of phenylglycinol derivatives
with terminal and internal alkynes directed by picolinamide auxiliary has been developed …

We report herein an alkenylation of benzylic C (sp3)–H bonds with diazo compounds via
carbon cation intermediates with DDQ as the oxidant in the presence of a catalytic amount of …

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 metal-free and efficient oxidative C (sp)–H functionalization of alkynes has been
developed for the synthesis of 1, 2-diketones. A composite of tert-butyl nitrite and ascorbic …