3200-36-0Relevant articles and documents
Nanoporous TiO2 containing an ionic liquid bridge as an efficient and reusable catalyst for the synthesis of: N, N ′-diarylformamidines, benzoxazoles, benzothiazoles and benzimidazoles
Mazloumi,Shirini,Goli-Jolodar,Seddighi
, p. 5742 - 5752 (2018/04/23)
In this work, a green and efficient procedure is reported for the preparation of N,N'-diarylformamidines, benzoxazoles, benzothiazoles, and benzimidazoles using nanoporous TiO2 containing an ionic liquid bridge. This reagent is prepared via the modification of nanoporous TiO2 with bis-3-(trimethoxysilylpropyl)-ammonium hydrogen sulfate (TiO2-[bip]-NH2+ HSO4-). The procedure gave the products in excellent yields in very short reaction times under solvent-free conditions. The reusability of the catalyst is the other important feature of the reported method.
An efficient method for the synthesis of formamidine and formamide derivatives promoted by sulfonated rice husk ash (RHA-SO3H)
Seddighi, Mohadeseh,Shirini, Farhad,Mamaghani, Manouchehr
, p. 433 - 439 (2015/02/05)
A mild, simple and efficient method has been developed for the promotion of the preparation of N,N′-diphenylformamidines from various aromatic amines and ethyl orthoformate using sulfonated rice husk ash (RHA-SO3H) solid acid catalyst. This reagent has also been used for the N-formylation of a variety of amines using formic acid under solvent-free conditions. The procedures gave the products in very short reaction times and good-to-high yields. Also this catalyst can be reused for five times without loss of its catalytic activity.
Manipulating magnetism: Ru25+ paddlewheels devoid of axial interactions
Chiarella, Gina M.,Cotton, F. Albert,Murillo, Carlos A.,Ventura, Karen,Villagrán, Dino,Wang, Xiaoping
, p. 9580 - 9589 (2014/07/22)
Variable-temperature magnetic and structural data of two pairs of diruthenium isomers, one pair having an axial ligand and the formula Ru 2(DArF)4Cl (where DArF is the anion of a diarylformamidine isomer and Ar = p-anisyl or m-anisyl
Pushing back the limits of hydrosilylation: Unprecedented catalytic reduction of organic ureas to formamidines
Pouessel, Jacky,Jacquet, Olivier,Cantat, Thibault
, p. 3552 - 3556 (2014/01/06)
Pushing back the limits: A novel catalytic transformation has been designed to prepare formamidine derivatives by reduction of substituted ureas with hydrosilanes. Simple iron catalysts based on commercially available iron salts and phosphine ligands prov
Ultrasound promoted expeditious, catalyst-free and solvent-free approach for the synthesis of N,N′-diarylsubstituted formamidines at room temperature
Dar, Bashir Ahmad,Ahmad, Syed Naseer,Wagay, Mohammad Arif,Hussain, Altaf,Ahmad, Nisar,Bhat, Khursheed Ahmad,Khuroo, Mohammad Akbar,Sharma, Meena,Singh, Baldev
, p. 4880 - 4884 (2013/09/02)
An effortless and efficient protocol was developed for the synthesis of N,N′-diarylsubstituted formamidines under environment-friendly conditions. Ultrasonic energy was employed to obtain the desired products in excellent yields with high purity under solvent-free and catalyst-free conditions. Products were purified by the crystallization technique to avoid excess utilization of organic solvents.
Biomimetic approach for the synthesis of N,N′-diarylsubstituted formamidines catalyzed by β-cyclodextrin in water
Patil, Dipak R.,Dalal, Dipak S.
, p. 1125 - 1128 (2012/11/13)
An environmentally benign and highly efficient biomimetic approach for the synthesis of N,N′-diarylsubstituted formamidines in water catalyzed β-cyclodextrin is described under neutral condition with quantitative yields of products. β-Cyclodextrin has bee
Amine exchange in formamidines: An experimental and theoretical study
Capela, Marinha Df.,Mosey, Nicholas J.,Xing, Liyan,Wang, Ruiyao,Petitjean, Anne
supporting information; experimental part, p. 4598 - 4612 (2011/06/24)
N-H-containing formamidines combine a reasonably strong association to carboxylic acids to form complexes of well-defined geometries with a simultaneous proton-induced electrophilicity enhancement that allows for the exchange of their amine portion. The N