Catalytic oxidation of alcohols and sulfides with hydrogen peroxide using isoindoline and phthalazine-based diiron complexes

H2O2-oxidation of α-aminoisobutyric and cyclic amino acids catalyzed by iron(III) isoindoline complexes

“…Finally, the oxidation of other cyclic amino acids like 1-aminocyclohexane-1-carboxylic acid (ACHH), 1-aminocyclopentane-1-carboxylic acid (ACPH), 1-aminocyclobutane-1-carboxylic acid (ACBH), and 1-aminocyclopropane-1-carboxylic acid (ACCH) by H 2 O 2 in DMF/H 2 O (3:1 V/V) at 35°C was examined using [Fe III Cl 2 (L 1 )] as a catalyst, and the results are summarized in Table 1 (entries [16][17][18][19][20][21][22][23][24][25][26][27], and Fig. 2.…”

“…In these complexes, it was possible to control the redox potential of the metal center by varying the aryl substituent on the bis-iminoisoindoline moiety as illustrated in Scheme 1. Recently, a series of iron(II) and iron(III) complexes of 1,3-bis(2 0 -arylimino)isoindoline with various N-donor aryl groups have been characterized for mimicking highly selective biological reactions that proceed under mild conditions, namely the dioxygenolytic cleavage of catechols [22], superoxide dismutase (SOD) mimic activity [23], oxidative coupling reaction of 2-aminophenols [24], and catalytic oxidation of alcohols and sulfides [25,26].…”

Iron-Catalyzed Oxidation of 1-Phenylethanol and Glycerol With Hydrogen Peroxide in Water Medium: Effect of the Nitrogen Ligand on Catalytic Activity and Selectivity

“…Alcohol oxidation to the corresponding carbonylic compounds is an important chemical process in which iron catalysis has been playing a leading role. In contrast to traditional oxidation methods, the use of iron derivatives is a key feature for the development of sustainable catalytic reactions, due to large availability, low price, and negligible toxicity of this metal (Lenze et al, 2013a,b;Szávuly et al, 2014;Tan et al, 2015;Martins et al, 2016;Neve et al, 2016;Olivo et al, 2016;Pinto et al, 2016;Sheet and Paine, 2016;Bauer, 2017;Yan et al, 2017). Of course, in order to assess a thoroughly green process other reaction features must be accordingly chosen, among which the nature of the oxidant and of the reaction medium are especially relevant.…”

Schiff base Mn(iii) and Co(ii) complexes coated on Co nanoparticles: an efficient and recyclable magnetic nanocatalyst for H2O2 oxidation of sulfides to sulfoxides

“…[1][2][3][4][5] Schiff base transition metal complexes as catalysts have been widely used because of their potential use in numerous reactions, 6,7 such as hydrogenation of organic substrates, 8 epoxidation of olens, 9 conversion of epoxides into halohydrines, 10,11 asymmetric ring opening of terminal epoxides 12 and oxidation reactions. [13][14][15] In recent years some publications have been reported suldes-oxidation using phthalazine-based di-iron complexes, 16 b-brominated meso-tetraphenylporphyrinato manganese(III) acetate, 17 copper Schiff base complex, 18 immobilized metalloporphyrins, 19 TsOH by phenyliodine diacetate as an oxidant, 20 dendritic bis(acylamino) pyridines, 21 Schiff base of Mn(III) complex supported on magnetic cobalt nanoparticles, 22 Schiff base complexes of Ni, Co, Cr, Cd and Zn supported on Fe 3 O 4 magnetic nanoparticles, 23 magnetic nanoparticle immobilized N-propylsulfamic acid, 24 Au/CTN-silica catalyst, 25 cobalt(II), copper(II), zinc(II) and palladium(II) Schiff base complexes, 26 1,4-bis(3-methylimidazolium-1-yl) butane ditribromide, 27 carboxylated multi-walled carbon nano tubes, 28 1,4-bis(3-methylimidazolium-1-yl) butane ditribromide [bMImB](Br 3 ) 2 ionic liquid reagent 29 and Mo(VI) complex supported on Fe 3 O 4 nanoparticles. 30 In this study, new heterogeneous nanocatalysts were synthesized by chemical modication of surface magnetic nanoparticles of Co with Schiff-base ligands, followed by complex formation through the reaction with Co(II) and Mn(III) salts.…”