124397-44-0Relevant academic research and scientific papers
13C NMR and Azomethine 1H NMR Spectra of Substituted N-Benzylideneanilines and Hammett Correlations
Echevarria, Aurea,Miller, Joseph,Nascimento, M. Graca
, p. 809 - 813 (1985)
Twenty-four N-benzylideneanilines (four being new compounds) have been prepared, which are devided conveniently into three series: (I) with 4-substituents, plus one compound with 3- and 4-substituents; (II) with 4'-substituents, plus one compound with 3'-
Liquid crystalline behavior of binary mixtures of structurally dissimilar mesogens and nonmesogens
Dave, Jayrang S.,Patel, Purvang D.,Bhatt, Himanshu S.
, p. 8 - 21 (2013)
We have studied eight binary systems comprising three enantiotropic nematogens, namely 4-(4′-n-butyloxybenzoyloxy)phenylazo-4″- fluorobenzene, 4-(4′-n-butyloxybenzo yloxy)benzylidene-4″-fluoro aniline, and 4-(4′-n-heptyloxybenzoyloxy)phenylazo-4″-fl uorobenzene; a monotropic nematogen, viz. 4-(4′-n-dodecyloxybenzoyloxy) napthylazo-4″-fluorobenzene; and three nonmesogens, viz. 4-(4′-n-butyloxy benzoyloxy)benzalde hyde, 4-methoxybenzylidene-4′- chloroaniline, and 4-methoxybenzylidene-4′-toluidine. The central linkage, terminal group, and central ring system of the components have been varied systematically and the effect of these variations has been evaluated on the liquid crystalline properties of the binary mixtures. The mixed mesomorphic properties of these systems are discussed on the basis of their phase diagrams.
Visible-light-responsive multielectron redox catalysis of lacunary polyoxometalates induced by substrate coordination to their lacuna
Suzuki, Kosuke,Jeong, Jinu,Yamaguchi, Kazuya,Mizuno, Noritaka
, p. 144 - 148 (2015)
We describe herein the efficient visible-light-responsive polyoxometalate-based multielectron photoredox catalysis induced by in situ coordination of alcohols to the lacuna of TBA4H4[γ-SiW10O36] (I, TBA=tetra-n-butylammonium). The coordination of alcohols to the lacuna of I generated a new highest occupied molecular orbital as the electron donor level and enabled the visible-lightresponsive multielectron transfer from alcohols to I, which could be utilized for aerobic alcohol oxidation and onepot synthesis of N-arylimines starting from nitroarenes and primary alcohols.
Cerium(III)-catalyzed synthesis of schiff bases: A green approach
Ravishankar, Lakshmy,Patwe, Siddhartha A.,Gosarani, Nehal,Roy, Aparajita
, p. 3177 - 3180 (2010)
The reaction of primary aromatic amines with aryl aldehydes is found to be catalyzed by cerium chloride heptahydrate under solvent-free conditions to give the corresponding Schiff bases in good yields. Copyright Taylor & Francis Group, LLC.
Synthesis of Green/Blue Light Emitting Quinolines by Aza-D-A Reaction Using InCl3 Catalyst
Singh, Rajkumar Romeshkumar,Singh, Thokchom Prasanta,Singh, Ningthoujam Premananda,Naorem, Shanta Singh,Singh, Okram Mukherjee
, p. 247 - 257 (2020/11/24)
An efficient InCl3-catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysi
Tandem imine formationviaauto-hydrogen transfer from alcohols to nitro compounds catalyzed by a nanomagnetically recyclable copper catalyst under solvent-free conditions
Derakhshan, Seyed Ruhollah,Hosseini Moghadam, Hadis,Sansano, José Miguel,Sobhani, Sara
, p. 19121 - 19127 (2021/06/03)
A direct imination reaction was developed by tandem reaction of alcohols and nitro compounds in the presence of Cu-isatin Schiff base-γ-Fe2O3as a nanomagnetically recyclable catalyst under solvent-free conditions. By this method, various imines were prepared in good to high yields from one-pot reaction of various alcohols (primary aromatic and aliphatic) and nitro compounds (aromatic and aliphatic)viaan auto-hydrogen transfer reaction. Use of an inexpensive and easily reusable catalyst, without requiring any additives or excess amounts of benzyl alcohol as the reaction solvent are the other advantages of this method. This catalytic system has the merits of cost effectiveness, environmental benignity, excellent recyclability and good reproducibility.
Switchable Imine and Amine Synthesis Catalyzed by a Well-Defined Cobalt Complex
Paudel, Keshav,Xu, Shi,Hietsoi, Oleksandr,Pandey, Bedraj,Onuh, Chuka,Ding, Keying
supporting information, p. 418 - 426 (2021/02/01)
Switchable imine and amine synthesis catalyzed by a tripodal ligand-supported well-defined cobalt complex is presented herein. A large variety of primary alcohols and amines were selectively converted to imines or amines in good to excellent yields. It is discovered that the base plays a crucial role on the selectivity. A catalytic amount of base leads to the imine formation, while an excess loading of base results in the amine product. This strategy on product selectivity also strongly depends on the organometallic catalysts in use. We expect that the present study could provide useful insights toward selective organic synthesis and catalyst design.
Synthesis and characterization of tetrachloro-1,3-oxazepine derivatives and evaluation of their biological activities
Kshash, Abdullah Hussein
, p. 113 - 118 (2020/04/01)
6,7,8,9-Tetrachloro[1,3]oxazepine-1,5-dione derivatives 1b-10b have been synthesized by reacting Schiff bases 1a-10a with tetrachlorophthalic anhydride (TCPA) under (2 + 5 → 7) cycloaddition reaction conditons. All reactions had been monitored using TLC.
Study on the interaction of triaryl-dihydro-1,2,4-oxadiazoles with α-glucosidase
Khosravi, Arefeh,Vaezi, Gholamhassan,Hojati, Vida,Abdi, Khosrou
, p. 109 - 117 (2020/01/11)
Purpose: One of the therapeutic approaches in the management of Type 2 diabetes is delaying the absorption of glucose through α-glucosidase enzymes inhibition, which can reduce the incidence of postprandial hyperglycemia. The existence of chronic postpran
Diethylsilane as a Powerful Reagent in Au Nanoparticle-Catalyzed Reductive Transformations
Louka, Anastasia,Kidonakis, Marios,Saridakis, Iakovos,Zantioti-Chatzouda, Elisavet-Maria,Stratakis, Manolis
, p. 3508 - 3514 (2020/06/02)
Diethylsilane (Et2SiH2), a simple and readily available dihydrosilane, that exhibits superior reactivity, as compared to monohydrosilanes, in a series of reductive transformations catalyzed by recyclable and reusable Au nanoparticles (1 mol-%) supported on TiO2. It reduces aldehydes or ketones almost instantaneously at ambient conditions. It can be used in a one pot rapid reductive amination procedure, in which premixing of aldehyde and amine is required prior to the addition of the reducing agent and the catalyst, even in a protic solvent. An unprecedented method for the synthesis of N-arylisoindolines is also shown in the reductive amination between o-phthalaldehyde and anilines. In this transformation, it is proposed that the intermediate N,2-diphenylisoindolin-1-imines are reduced stepwise to the isoindolines. Finally, Et2SiH2 readily reduces amides into amines in excellent yields and shorter reaction times relative to previously known analogous nano Au(0)-catalyzed protocols.
