In the present paper, we developed a straightforward and efficient approach to synthesis of 4,4′-(arylmethylene)bis(3-methyl-1H-pyrazol-5-ol) derivatives by a simple one pot pseudo five component reactions using ZnAl2O4 nanoparticles as catalyst under benign reaction conditions.
A convenient, efficient and ligand-free method for the C-N coupling reaction of anilines and aryl iodides was performed using CuCr 2 O 4 nanoparticles. Copper chromite nanocatalyst improved rate and facility of the synthesis of triarylamines. The heterogeneous catalyst was fully characterized by scanning electron microscopy, IR and X-ray diffraction techniques. Recyclability, excellent yields of products and short reaction times are the important advantages of this ligand-free procedure by using the CuCr 2 O 4 nanoparticles.
Synthesis of 4,4'-(Arylmethanediyl)bis(3-methyl-1H-pyrazol-5-ol) Derivatives.-The new methodology offers several advantages such as excellent yields, simple procedure, and mild conditions. The catalyst can be reused at least five times without any obvious change in its catalytic activity. -(SAFAEI-GHOMI*, J.; KHOJASTEHBAKHT-KOOPAEI, B.; ZAHEDI, S.; Chem. Heterocycl. Compd. (N. Y., NY, U. S.) 51 (2015) 1, 34-38, http://dx.
A Highly Efficient Synthesis of Triarylamines. -The efficient procedure provides the products with high yields. The catalyst is recycled and reused in four additional cycles without loss of its activity. -(SAFAEI-GHOMI*, J.; AKBARZADEH, Z.; KHOJASTEHBAKHT-KOOPAEI, B.; RSC Adv. 5 (2015) 37, 28879-28884, http://dx.
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