The development of new strategies and chemical reactions continues to be a major focus of
research efforts in the modern synthetic organic community. 1 Of the various types of …

Pyrazolines are important five‐membered heterocycles, containing two adjacent nitrogen
atoms. They can incorporate various functional groups and possess unique biological …

A straightforward strategy for the metal-free construction of trifluoromethyl-containing
pyrazole derivatives has been achieved from readily available α-halo hydrazones and CF3 …

A general visible light induced photoredox-catalyzed radical trifluoromethylation/cyclization
cascade of β-aryl-β, γ-unsaturated hydrazones and oximes is described. The protocol …

A novel photocatalytic hydrazonyl radical-mediated radical cyclization/allylation cascade
reaction of β, γ-unsaturated hydrazones is developed using allyl sulfones and Morita–Baylis …

Pyrazolines and pyrazolones are prevalent cores in drugs and bioactive molecules.
Functionalizing them with heteroatoms on the ring improves or expands their clinical …

Chiral multi-nitrogen-containing heterocycles, such as pyrazole, imidazole and pyridazine,
are widely found in naturally occurring organic compounds and pharmaceuticals, and …

Abstract A highly enantioselective 1, 3-dipolar cycloaddition of α-substituted diazoesters with
exocyclic enones was achieved with chiral scandium (III)/N, N'-dioxide complex as the …

I2–TBHP-catalyzed oxidative cross coupling of N-sulfonyl hydrazones with isocyanides has
been realized for the synthesis of 5-aminopyrazoles through formal [4+ 1] annulation via in …

A silver-catalyzed decarboxylative cyclization process has been developed for the synthesis
of substituted pyrazoles from the readily available 1, 2-diaza-1, 3-dienes and α-keto acids …