Efficient reduction of nitro compounds and domino preparation of 1-substituted-1H-1,2,3,4-tetrazoles by Pd(ii)-polysalophen coated magnetite NPs as a robust versatile nanocomposite

Abstract

Facile nitroarene reduction as well as domino/reduction MCR preparation of 1-substituted-1H-1,2,3,4-tetrazoles from nitroarenes was performed by Pd(ii)-polysalophen coated magnetite NPs as a highly selective, recyclable and efficient nanocomposite.

Catalytic filtration: efficient C-C cross-coupling using Pd(II)-salen complex-embedded cellulose filter paper as a portable catalyst

“…S1b †), in agreement with the literature. 24,25 The salen ligand (3) was characterized by the shi of the peak belonging to the aldehyde group towards weaker vibrations due to the formation of C]N bond at 1635 cm À1 . 25,26 Also, the peaks related to C-I and C-H (aliphatic) and C-H (aromatic) have appeared at 582 cm À1 , 3078 cm À1 and 2916 cm À1 , respectively (Fig.…”

“…S1e †). 25,27 In addition, the two peaks at 462 cm À1 and 568 cm À1 , respectively, related to the stretching vibrations of Pd-O and Pd-N bonds, conrm the coordination of Pd to the salen ligand. 25,27 Also, the intensity of stretching vibration related to O-H (phenolic) was signicantly reduced due to this coordination.…”

Transfer hydrogenation of nitroarenes using cellulose filter paper-supported Pd/C by filtration as well as sealed methods

“… 4 The selectivity of the catalyst for transfer hydrogenation of the nitro group is an important factor from the point of view of industrial applications, environmental protection, easy work up, purity of products, and cost-effectiveness because the reduction of nitroarenes creates six different products including oxime, azo, nitroso, amine, hydrazine, and diazine oxide ( Scheme 1 ). 5 In addition, in multi-substituted nitroarenes containing several reducible groups such as iminium, nitrile, and olefin bonds, the selectivity of the catalyst is of high importance.…”

The synthesis and characterization of a magnetic histidine Schiff base palladium complex and its efficiency investigation in the nitroarene pollutants reduction and dyes degradation

“…Recently, Xu et al prepared a Pd (II)‐sulophen complex and immobilized it on the magnetic silica support. High yields of aniline derivatives were obtained via reduction of nitrobenzenes by this catalytic system [19].…”