This review covers and summarizes comprehensive data reported within the period from
2017 to 2021 on the synthetic strategies and approaches to 1 H-pyrazolo [3, 4-b] pyridine …

The phospha-Michael addition (PMA) to many Michael acceptors like nitro-olefins, cyclic
enones is well known. Chalcones and α, β-unsaturated esters are rarely employed in PMA …

Within the scope of develo** a new route to an active pharmaceutical ingredient
intermediate, we had need of a fluorinated indazole. Although an established route was in …

1, 1-Diaminoazines can act as effective organocatalysts for the formation of phosphorus–
carbon bonds between biphenylphosphine oxide and an activated alkene (Michael …

An azine-based, non-palindromic, neutral NNN-pincer ligand was synthesised in a single
step with an yield of 85%. The palladation of the ligand, using Pd (OAc) 2, was performed in …

We report a method to furnish substituted 1H‐indazoles via a coupling of 3‐acetyl
substituted nitroarenes and arylhydrazines. Reactions progressed in the presence of cobalt …

A highly efficient copper (I)-catalyzed approach for the synthesis of 1, 1′-bisindoles that is
based on the formation of four bonds in one step has been developed. The unprecedented …

Copper (I) catalysed oxidative conversion of imidazopyridines into N‐pyridinylamides has
been achieved via tandem C− C and C− N bond cleavages under oxidative reaction …

In this work we present a new method for indazole synthesis through the unexpected
rearrangement of various 7‐nitroisatins during the reaction with hydrazine hydrate. The new …

Over the last three decades, owing to labour cost, time and especially environmental issues,
one‐pot synthesis of heterocyclic compounds involving tandem or multicomponent …