1,2,3-Triazole and Its Analogues: New Surrogates for Diazo Compounds.

Readily accessible and shelf-stable 1,2,3-triazole and its analogues such as pyridotriazole, triazoloindole, benzotriazole, and thiadiazole exist in equilibrium with their ring-opened isomers, , diazo compounds. These ring-opened isomers could be trapped by various metal catalysts (e.g.

(Cyclopentadienone)iron Complexes: Synthesis, Mechanism and Applications in Organic Synthesis.

(Cyclopentadienone)iron tricarbonyl complexes are catalytically active, inexpensive, easily accessible and air-stable that are extensively studied as an active pre-catalyst in homogeneous catalysis. Its versatile catalytic activity arises exclusively due to the presence of a non-innocent ligand, which can trigger its unique redox properties effectively. These complexes have been employed widely in (transfer)hydrogenation (e.