614-65-3Relevant articles and documents
Metallo-hydrazone complexes immobilized in zeolite Y: Synthesis, identification and acid violet-1 degradation
Ahmed, Ayman H.,Thabet
, p. 527 - 535 (2011)
Copper(II), cobalt(II) and nickel(II) complexes of hydrazone ligand (SAPH) derived from salicylaldehyde and phenylhydrazine have been encapsulated in zeolite-Y super cages via ship-in-a-bottle synthesis. Detailed characterization of the intrazeolitic complexes were performed by elemental analysis, spectral (FT-IR, UV-Vis.) studies, magnetic measurements and X-ray diffraction. Furthers, surface texture and thermal analysis (TG, DTG, DTA) have provided further evidence for successful immobilization of the metal complexes inside zeolite Y. Investigation of the stereochemistry of these incorporated chelates pointed out that, SAPH ligand is capable to coordinate with the central metal through the (CN), phenolic (OH) and (NH) groups forming polynuclear structures. The involvement of zeolite oxygen in coordination was postulated in the hybrid materials. The intrazeolitic copper, cobalt and nickel-SAPH complexes have distorted tetrahedral, octahedral and square-pyramidal configurations, respectively. The zeolite encapsulated complexes are thermally stable up to 800 °C except Cu(II) sample which is thermally stable up to midpoint 428 °C. The assessment of the catalytic activity was performed by the use of the photo-degradation of acid violet-1 dye as a probe reaction in presence of H 2O2 as an oxidant. Decolorization of acid violet-1 dye was examined under the same conditions whereas the unpromoted zeolite and Cu II, CoII, NiII-hydrazone complexes supported on zeolite showed 13% and 76%, 53%, 43% color removal, respectively. The results revealed that, the zeolite encapsulated Cu(II) complex generally exhibited better catalytic efficiency (76%) compared with other investigated zeolite encapsulated metal-hydrazone samples.
Kinetics and Mechanism for o-Hydroxybenzaldehyde Phenylhydrazone Formation
Bastos, M.P.,Alves, K.B.,Oliveira Neto, G. de,Amaral, Luciano do
, p. 3342 - 3344 (1981)
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METHODS OF FORMING IMINES, IMINE-RELATED AND IMINE-DERIVED COMPOUNDS USING GREEN SOLVENTS
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Paragraph 0184-0185, (2021/10/22)
The present disclosure relates to using green solvents to synthesize an array of imines, imine-related and imine-derived compounds in an efficient and eco-friendly matter, satisfying green chemistry requirements. Reaction embodiments are performed using solvents, such as ethyl lactate and dimethyl isosorbide, which are both individually characterized as green. In embodiments, solvents include lactic whey and/or water as co-solvents. In these green solvents, the synthesis process discussed herein can produce up to quantitative yields of product at room temperature in a short duration. Embodiments include a method of forming an imine, imine-related or imine-derived compound product. In embodiments, the methods include mixing an aldehyde reactant with a nucleophilic/nitrogen-containing reactant in a green solvent at a temperature between negative twenty degrees Celsius (?20° C.) and positive fifty degrees Celsius (50° C.); stirring the mixture; and forming an imine, imine-related or imine-derived compound product.
Zeolite enslaved transition metal complexes as novel heterogeneous catalysts for synthesis of polycyclic heterocycles using suzuki–miyaura cross coupling reaction under greener conditions
Dwivedi, Jaya,Jain, Sonika,Kishore, Dharam,Mishra, Shruti,Sain, Shalu,Sankararamakrishnan, Nalini,Sharma, Swapnil,Sharma, Vivek,Srivastava, Manish,Wabaidur, Saikh M
, (2020/10/27)
In the present work we report the construction of zeolite enslaved transition metal complexes (Pd2+, Ni2 + ) as novel heterogenous catalysts for synthesis of polycyclic heterocycles using suzuki–miyaura cross coupling reaction in ethanolic medium. The synthesized catalysts were characterized by employing UV–Vis, FT-IR, magnetic susceptibility, N2 sorption, XRD, XPS, FE-SEM analysis. Results of the study advocate that newly developed catalysts give rise to a rapid and easy synthesis of various polycyclic heterocycles by Suzuki coupling reactions in impressive yields. In conclusion, developed catalyst may be used as versatile tool in the synthesis of various industrially and pharmaceutically important polycyclic heterocycles under greener conditions.
