نتایج جستجو برای: oxidative amidation

تعداد نتایج: 128987  

Journal: :Chemical communications 2006
Md Taifur Rahman Takahide Fukuyama Naoya Kamata Masaaki Sato Ilhyong Ryu

A low pressure microflow system was developed for palladium-catalyzed multiphase carbonylation reactions in an ionic liquid. The microflow system resulted in superior selectivity and higher yields in carbonylative Sonogashira coupling and amidation reactions of aryl iodides compared to the conventional batch system.

Journal: :Dalton transactions 2009
Israel Cano M Carmen Nicasio Pedro J Pérez

The complex [Tpm(*,Br)Cu(NCMe)]BF4 (Tpm(*,Br) = HC(3,5-Me2-4-Br-pyrazolyl)3) catalyses the aziridination of alkenes and the amidation of cyclic ethers with chloramine-T as the nitrene source and the ionic liquid [bmim]PF6 as the reaction medium (bmim = 1-n-butyl-3-methylimidazolium). High conversions have been obtained over several cycles of catalyst recovery and reuse.

Journal: :Chemical communications 2004
Dae-Hwan Jung Myung Sup Jung Young Koan Ko Seung Joo Seo Hee-Tae Jung

Carbon nanotube conducting arrays were constructed via consecutive amidation reactions with the aid of a linker molecule and a condensation agent on a patterned amine-terminated glass substrate. The electrical resistivity of the nanotube films was sensitive to the degree of coverage for the substrate, making it possible to tailor nanotube multilayers suitable for use in micro- or nanoscale elec...

2014
Hui Xu Xixue Qiao Shiping Yang Zengming Shen

A Cu-catalyzed aromatic C-H amidation with phthalimide under oxygen as a terminal oxidant without using additional additives has been achieved. This reaction has the broad substrate scope and shows moderate to good yields in most cases. This method is complementary to the previously reported metal-catalyzed C-H amination systems.

Journal: :Chemical communications 2010
Joyce Wei Wei Chang Thi My Uyen Ton Stefani Tania Paul C Taylor Philip Wai Hong Chan

The direct synthesis of amides by insertion into the C-H bond of aldehydes is shown to be a practical procedure through application of cheap, readily available catalysts generated in situ from copper(i) halides and pyridine.

Journal: :Physiological research 2007
M Marounek Z Volek A Synytsya J Copíková

Two experiments were performed to compare the effect of pectin and its hydrophobic derivatives on homeostasis of cholesterol and cecal metabolism in male young rats. Control rats were fed a diet supplemented with palm fat and cholesterol (50 and 10 g/kg, respectively). Rats of other groups were fed the same diet containing citrus pectin or octadecylpectinamide (60 g/kg). Diets were fed for 4 we...

2009
Heng-Shui Shen Nan Liu Zi-Cheng Li Wen-Cai Huang

The title compound, C(16)H(18)N(2)O(2)S, was obtained as an unexpected product while attempting to form carbon-nitro-gen bonds by catalytic amidation. The mol-ecule displays an E conformation about the C=N double bond. The planes of the two aromatic rings in the mol-ecule form a dihedral angle of 47.06 (9)°.

Journal: :Nanoscale 2012
Qiang Zhang Bing Yan Fang Lei Hao-Hong Chen

The solution-phase synthesis of high quality LaOBr nanocrystals has been realized by single source precursors under the assistance of an organic salt (TBAB) and characterized by XRD and TEM. The unique crystallization process of LaOBr NCs is demonstrated and dictated by the amidation reaction. The X-ray luminescence of (Tm, Tb, Eu)-doped LaOBr NCs has also been characterized.

2009
Qiu Wang Stuart L. Schreiber

A copper-mediated aerobic coupling reaction enables direct amidation of heterocycles or aromatics having weakly acidic C-H bonds with a variety of nitrogen nucleophiles. These reactions provide efficient access to many biologically important skeletons, including ones with the potential to serve as inhibitors of HMTs.

Journal: :Chemical communications 2013
Sameer S Kulkarni Xiangdong Hu Roman Manetsch

A practical and efficient amidation reaction involving aromatic aldehydes and various azides under mild conditions is described. A broad spectrum of functional groups was tolerated, and the amides were synthesized in moderate to excellent yields, presenting an attractive alternative to the currently available synthetic methods.

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