نتایج جستجو برای: nitriles

تعداد نتایج: 1359  

Journal: :Chemical communications 2008
Justin R Denton Kevin Cheng Huw M L Davies

Nitrile-substituted cyclopropanes are readily synthesized in a stereocontrolled fashion from the intermolecular cyclopropanation between 2-diazo-2-phenylacetonitrile and electron-rich olefins, catalyzed by the chiral dirhodium complex, Rh(2)(S-PTAD)(4).

Journal: :The Plant Cell 2001

2015
Dattatraya B. Bagal Bhalchandra M. Bhanage

Amines are important building blocks possessing various applications in agrochemicals, the fine chemical industry, pharmaceuticals, materials science and biotechnology. The catalytic hydrogenation of nitriles is an important reaction for the onestep synthesis of diverse amines. However, significant amounts of side product formation during the course of the reaction is a major issue. In recent y...

2017
Yan-Yun Liu Xu-Heng Yang Ren-Jie Song Shenglian Luo Jin-Heng Li

Difunctionalization of alkenes has become a powerful tool for quickly increasing molecular complexity in synthesis. Despite significant progress in the area of alkene difunctionalization involving the incorporation of a nitrogen atom across the C-C double bonds, approaches for the direct 1,2-carboamination of alkenes to produce linear N-containing molecules are scarce and remain a formidable ch...

Journal: :The Journal of biological chemistry 2016
Micah T Nelp Yang Song Vicki H Wysocki Vahe Bandarian

Nitrile hydratase metalloenzymes are unique and important biocatalysts that are used industrially to produce high value amides from their corresponding nitriles. After more than three decades since their discovery, the mechanism of this class of enzymes is becoming clear with evidence from multiple recent studies that the cysteine-derived sulfenato ligand of the active site metal serves as the ...

Journal: :Chemical & pharmaceutical bulletin 2013
Kenzo Yahata Masaki Minami Yuki Yoshikawa Kei Watanabe Hiromichi Fujioka

A methodology for selective transformations of ketones, esters, Weinreb amides, and nitriles in the presence of aldehydes has been developed. The use of a combination of PPh(3)-trimethylsilyl trifluoromethanesulfonate (TMSOTf) promotes selective transformation of aldehydes to their corresponding, temporarily protected, O,P-acetal type phosphonium salts. Because, hydrolytic work-up following ens...

Journal: :Annals of the Rheumatic Diseases 1977

Journal: :Dalton Transactions 2021

Reactions of a diboranate with organic nitriles result in B–C bond formation and variable behaviour that is rationalised as due to substituent-dependent modulation the basicity electrophilicity Mg-coordinated nitrile intermediates.

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