نتایج جستجو برای: Amides

تعداد نتایج: 3739  

Journal: :Organic & biomolecular chemistry 2014
Wandi Zhang Christopher W Haskins Yang Yang Mingji Dai

Palladium-catalyzed synthesis of nitriles from amides has been described. Two similar, but complementary reaction conditions have been identified to convert various amides including α,β,γ,δ-unsaturated amides, cinnamides, aromatic amides and alkyl amides to the corresponding nitriles in good to excellent yield.

Journal: :Dalton transactions 2014
Sun-Hwa Lee Georgii I Nikonov

Secondary amides can be reduced by silane HSiMe2Ph into imines and aldehydes by a two-stage process involving prior conversion of amides into iminoyl chlorides followed by catalytic reduction mediated by the ruthenium complex [Cp(i-Pr3P)Ru(NCCH3)2]PF6 (1). Alkyl and aryl amides bearing halogen, ketone, and ester groups were converted with moderate to good yields under mild reaction conditions t...

2013
Liquan Tan Peng Zhou Cui Chen Weibing Liu

A self-condensation cyclization reaction mediated by phosphorus pentoxide (P2O5) and catalyzed by zinc bromide (ZnBr2) is presented for the synthesis of polysubstituted 4-pyridones and 2-pyridones from β-keto amides. A variety of β-keto amides are used in this approach, and a wide range of functionalized 4-pyridones and 2-pyridones were obtained in good to excellent yields. When employing the N...

Javad Azizian Mahdieh Entezari, Shahab Zomorod bakhsh

The internal strain in cyclic amides are explained as a factor of resonance that are effected on the bond length C-N  and are a major factor of rates of hydrolysis. The cyclic amides in this study are optimized by Gaussian program and the bond length of C-N in the rings are studied by HF/6-31G*.

2014
Siham Raboune Jordyn M. Stuart Emma Leishman Sara M. Takacs Brandon Rhodes Arjun Basnet Evan Jameyfield Douglas McHugh Theodore Widlanski Heather B. Bradshaw

A family of endogenous lipids, structurally analogous to the endogenous cannabinoid, N-arachidonoyl ethanolamine (Anandamide), and called N-acyl amides have emerged as a family of biologically active compounds at TRP receptors. N-acyl amides are constructed from an acyl group and an amine via an amide bond. This same structure can be modified by changing either the fatty acid or the amide to fo...

Abdolkarim Zare, Ahmad Reza Moosavi-Zare Bentolhoda Gholami Maryam Maghsoudi

A highly efficient and simple protocol for the synthesis of 2-amidoalkylphenols has been described. The one-pot multi-component condensation of phenols with aromatic aldehydes and amides in the presence of catalytic amount of SO3H-functionalized phthalimide (SFP) under solvent-free conditions afford the title compounds in high yields and relatively short reaction times. It is noteworthy that th...

Journal: :Chemical communications 2014
Enguerrand Blondiaux Thibault Cantat

Hydrosilylation of secondary and tertiary amides to amines is described using catalytic amounts of B(C6F5)3. The organic catalyst enables the reduction of amides with cost-efficient, non-toxic and air stable PMHS and TMDS hydrosilanes. The methodology was successfully extended to the more challenging reduction of primary amides.

Journal: :Organic & biomolecular chemistry 2012
Bo Chen Nan Wang Wu Fan Shengming Ma

A series of N-allenyl amides was prepared conveniently from N-propargyl amides in good to excellent yields via a modified procedure developed in this group. The palladium-catalyzed coupling-cyclization of these prepared N-allenyl amides in the presence of organic iodides has been developed affording the oxazoline derivatives efficiently.

Journal: :New journal of chemistry = Nouveau journal de chimie 2009
Michael H Abraham William E Acree J Enrique Cometto-Muñiz

Literature data on partitioning of compounds from the gas phase to a number of amides and from water to the amides has been collected and analyzed through the Abraham solvation equations. The resulting equations are statistically good enough to be used for the prediction of further partition coefficients, and allow deductions to be made about the chemical properties of the amides, as solvents. ...

Journal: :Asian Journal of Organic Chemistry 2023

Amides are important compounds in organic synthesis and have significant roles pharmaceuticals, agrochemicals, materials. The Ritter reaction is a classical transformation to amides between nitriles alcohol derivatives or olefins. para-Quinone methides (p-QMs) highly reactive intermediates synthesis. cover picture visualizes that, as new acceptors, para-quinone joining the alcohols alkenes, kno...

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