CuFe2O4Nanoparticle Mediated Method for the Synthesis of 5-Substituted 1H-Tetrazoles from (E)-Aldoximes

Synthetic strategies of heterocycle-integrated pyridopyrimidine scaffolds supported by nano-catalysts

“…Nano-catalysts such as CuFe 2 O 4 are green catalysts, insensible for either air or moisture, [128][129][130] and have been employed for the synthesis of varied heterocycles, such as ve-membered ring heterocycles with two heteroatoms, 131 ve-membered ring heterocycles with three heteroatoms, 132,133 ve-membered ring heterocycles with four heteroatoms, 134,135 fused heterocycles, 136 and applied in cross-coupling reactions. 137 Jannati et al 138 aldehydes and 3-methyl-1-phenyl-1H-pyrazol-5-one under nanocatalytic conditions using CuFe 2 O 4 gave the desired products 52a-j along with the formation of minor side products, bis(3methyl-1-phenyl-1H-pyrazol-5-ol) 53a-h (Scheme 41).…”

“…Nano-catalysts such as CuFe 2 O 4 are green catalysts, insensible for either air or moisture, 128–130 and have been employed for the synthesis of varied heterocycles, such as five-membered ring heterocycles with two heteroatoms, 131 five-membered ring heterocycles with three heteroatoms, 132,133 five-membered ring heterocycles with four heteroatoms, 134,135 fused heterocycles, 136 and applied in cross-coupling reactions. 137 Jannati et al 138 have applied a green procedure for the three-component one-pot synthesis of pyrazolylpyrido[1,2- a ]pyrimidines 52a–j .…”