Oxidative aromatization of 1,3,5-trisubstituted pyrazolines and Hantzsch 1,4-dihydropyridines by Pd/C in acetic acid.
[formula: see text] 1,3,5-Trisubstituted pyrazolines and Hantzsch 1,4-dihydropyridines were converted to the corresponding pyrazoles and pyridines effectively by the treatment of a catalytic amount of Pd/C in acetic acid.
Nakamichi
Natsuki
N
Department of Chemistry, Faculty of Science, Kobe University, Kobe 657-8501, Japan.
Kawashita
Yuka
Y
Hayashi
Masahiko
M