Results 181 to 190 of about 19,339 (247)

Brønsted-Acid-Promoted Diaza-Nazarov Cyclization to Access Tetrasubstituted Pyrazoles. [PDF]

Org Lett
Karacaoğlu UM, Türkmen YE.
europepmc   +1 more source

Azobisheteroarene photoswitches based on isoxazoles and pyrazoles: tunable photostationary states, thermal relaxation and sensitization under confinement. [PDF]

Chem Sci
Seyfried MD, Gemen J, Wyszynski L, Giard CL, Daniliuc CG, Schönhoff M, Doltsinis NL, Glorius F, Ravoo BJ.   +8 more
europepmc   +1 more source

Coinage Metal-Catalyzed Divergent Heterocyclizations of Underexplored <i>N</i>-Propargyl Hydrazides. [PDF]

Org Lett
Diez-Iriepa D, Toledano-Pinedo M, Herrera-Hernández L, Samadi A, Raouf YS, Rodríguez-Fernández MM, Flores-Galán P, Yanai H, Alonso JM, Marco-Contelles J, Almendros P.   +10 more
europepmc   +1 more source

Pyrazofurin Biosynthesis Involves Nonenzymatic Ring Contraction of a Pyridazine Intermediate Triggered by a Rieske Enzyme-Catalyzed Oxygenation. [PDF]

J Am Chem Soc
Zheng Z, Lee YH, Ren D, Liu HW.
europepmc   +1 more source

Enantioselective synthesis of C-C and C-N axially chiral pyrazole-based heterobiaryls. [PDF]

Chem Sci
He J, Yang Z, Lin L, Feng X.
europepmc   +1 more source

13C NMR of pyrazoles

Magnetic Resonance in Chemistry, 1993
The carbon-13 chemical shifts and coupling constants of 1168 pyrazoles are reported, some of them in several solvents. These data are briefly discussed on the basis of statistical treatment and qualitative comparisons.Peer ...
Rosa M Claramunt, Gérard Boyer, JOSÉ Elguero   +2 more
exaly   +3 more sources

Photochemistry of 3H-furo[3,4-c]pyrazoles and 3H-thieno[3,4-c]pyrazoles

Tetrahedron, 2013
The first examples of 3H-furo [3,4-c]pyrazoles and 3H-thieno[3,4-c]pyrazoles were prepared in an attempt to isolate examples of cyclopropane-fused thiophenes and furans.
Alan Payne
exaly   +3 more sources