65481-83-6Relevant academic research and scientific papers
Au nanoparticle-immobilized L-cysteine-paired porous ionic copolymer as an efficient catalyst for additive-free oxidative coupling of alcohols and amines
Du, Shengyu,Zhang, Chenjun,Jiang, Yuchen,Jiang, Pingping,Leng, Yan
, (2019/07/04)
Herein, an L-cysteine-paired ionic copolymer (DVB-[MimLcy]n) with mesoporosity was prepared by free radical copolymerization of divinylbenzene (DVB) and imidazolium ionic liquids (ILs), followed by anion-exchange with L-cysteine. Because of the rich functional groups of –NH2, –SH, and –COO– and the porous framework, the DVB-[MimLcy]3 was revealed to be an ideal stabilizer for metal nanoparticles (NPs). Highly uniform dispersed small Au NPs (2–3 nm) immobilized on DVB-[MimLcy]3 (Aua/DVB-[MimLcy]3) can act as an efficient heterogeneous catalyst for additive-free synthesis of imines through coupling of a broad range of alcohols and organic amines and can be easily recovered and steadily reused several times.
Mechanistic Studies on the Michael Addition of Amines and Hydrazines to Nitrostyrenes: Nitroalkane Elimination via a Retro-aza-Henry-Type Process
Kallitsakis, Michael G.,Tancini, Peter D.,Dixit, Mudit,Mpourmpakis, Giannis,Lykakis, Ioannis N.
, p. 1176 - 1184 (2018/02/09)
In this article we report on the mechanistic studies of the Michael addition of amines and hydrazines to nitrostyrenes. Under the present conditions, the corresponding N-alkyl/aryl substituted benzyl imines and N-methyl/phenyl substituted benzyl hydrazones were observed via a retro-aza-Henry-type process. By combining organic synthesis and characterization experiments with computational chemistry calculations, we reveal that this reaction proceeds via a protic solvent-mediated mechanism. Experiments in deuterated methanol CD3OD reveal the synthesis and isolation of the corresponding deuterated intermediated Michael adduct, results that support the proposed slovent-mediated pathway. From the synthetic point of view, the reaction occurs under mild, noncatalytic conditions and can be used as a useful platform to yield the biologically important N-methyl pyrazoles in a one-pot manner, simple starting with the corresponding nitrostyrenes and the methylhydrazine.
Catalyst-free and environment friendly synthesis of 2-aryl-3-substituted-4-thiazolidinones in water
Thakare, Manoj P.,Shaikh, Rahimullah,Tayade, Dipak
, p. 28619 - 28623 (2016/04/09)
A simple, efficient, eco-friendly, and cost-effective method has been developed for the three component one pot synthesis of 2-aryl-3-substituted-4-thiazolidinones is described. The method provides rapid and easy access to thiazolidinone compounds in good to excellent yields.
Direct and mild palladium-catalyzed aerobic oxidative synthesis of imines from alcohols and amines under ambient conditions
Jiang, Lan,Jin, Luolu,Tian, Haiwen,Yuan, Xueqin,Yu, Xiaochun,Xu, Qing
supporting information; experimental part, p. 10833 - 10835 (2011/11/04)
By ligand, TEMPO, and base screening, we developed a mild and green one-pot imine synthesis from alcohols and amines via a low-loading palladium-catalyzed tandem aerobic alcohol oxidation-dehydrative condensation reaction that can be readily carried out in open air at room temperature.
N,N'-Dialkyl-1,2-bis(hydroxyphenyl)ethylenediamines and N,N'-Dialkyl-4,5-bis(4-hydroxyphenyl)imidazolidines: Syntheses and Evaluation of Their Mammary Tumor Inhibiting Activity
Angerer, Erwin von,Egginger, Guenter,Kranzfelder, Gerhard,Bernhauer, Horst,Schoenenberger, Helmut
, p. 832 - 837 (2007/10/02)
Diastereomeric N,N'-dialyl-1,2-bis(hydroxyphenyl)ethylenediamines (5) were synthesized and tested for their affinity for the estradiol receptor.Only the (+/-)-1,2-bis(4-hydroxyphenyl)ethylenediamines with the alkyl groups C3H7 a=1.1
