76211-98-8Relevant academic research and scientific papers
AIEE phenomenon: Tetraaryl vs. triaryl pyrazoles
Mukherjee, Sayani,Salini,Srinivasan,Peruncheralathan
supporting information, p. 17148 - 17151 (2015/12/05)
Tetraarylpyrazoles are synthesized from commercially available materials in three steps and found to exhibit Aggregation Induced Emission Enhancement (AIEE) characteristics. Removing one aryl unit from tetraarylpyrazole leads to Aggregation Caused Quenching (ACQ), thus the number of aryl groups plays an important role in exploring such a phenomenon.
Synthesis of tri- and tetrasubstituted pyrazoles via Ru(II) catalysis: Intramolecular aerobic oxidative C-N coupling
Hu, Jiantao,Chen, Shi,Sun, Yonghui,Yang, Jing,Rao, Yu
supporting information, p. 5030 - 5033,4 (2012/12/12)
An unprecedented ruthenium(II)-catalyzed intramolecular oxidative C-N coupling method has been developed for the facile synthesis of a variety of synthetically challenging tri- and tetrasubstituted pyrazoles. Dioxygen gas is employed as the oxidant in this transformation. The reaction demonstrates excellent reactivity, functional group tolerance, and high yields.
Regiospecific synthesis of pyrazoles from 1-azabutadiene derivatives.
a Jose,Gotor, Vicente
, p. 1478 - 1492 (2007/10/02)
Reaction of 4-amino-1-azabutadienes with different hydrazines leads to pyrazoles.On the other hand, when 4-alkylidene-1-hydrazino-1-azabutadiene derivatives are treated with trifluoroacetic acid, N-alkenylpyrazoles are obtained.
Synthesis of Heterocyclic Compounds IV Pyrazol-1'-ylpyridines
Khan, Misbahul A.,Pinto, Alvaro A. A.
, p. 883 - 888 (2007/10/02)
2-Pyrazol-1'-ylpyridines were synthesized by condensation of pyridylhydrazines with 1,3-dicarbonyl compounds or by the Ullmann arylation of pyrazoles with halopyridines. - Keywords: Arylations; Pyrazolylpyridines; Ullmann reaction
