Results 331 to 340 of about 322,084 (409)
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Journal of the American Chemical Society, 2019
The amide bond is one of the most fundamental functional groups in chemistry and biology, and plays a central role in numerous processes harnessed to streamline the synthesis of key pharmaceutical and industrial molecules.
Guangchen Li +3 more
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The amide bond is one of the most fundamental functional groups in chemistry and biology, and plays a central role in numerous processes harnessed to streamline the synthesis of key pharmaceutical and industrial molecules.
Guangchen Li +3 more
semanticscholar +1 more source
Reactions of amide anions with α-bromo-amides
J. Chem. Soc., Chem. Commun., 1981The reactions of α-bromoisobutyramides with the anions from amides and a thioamide afford oxazolidin-4-ones and a thiazolidin-4-one, respectively; these are useful intermediates for preparation of ester derivatives.
G. Cavicchioni +3 more
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Accounts of Chemical Research, 2018
Transition-metal-catalyzed cross-coupling reactions represent a most powerful tool for the rapid construction of C-C and C-X bonds available to synthetic chemists.
Shicheng Shi, S. Nolan, M. Szostak
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Transition-metal-catalyzed cross-coupling reactions represent a most powerful tool for the rapid construction of C-C and C-X bonds available to synthetic chemists.
Shicheng Shi, S. Nolan, M. Szostak
semanticscholar +1 more source
NiH-Catalyzed Remote Asymmetric Hydroalkylation of Alkenes with Racemic α-Bromo Amides.
Angewandte Chemie, 2019Reported here is a terminal-selective, remote asymmetric hydroalkylation of olefins with racemic α-bromo amides. The reaction proceeds by NiH-catalyzed alkene isomerization and subsequent alkylation reaction, and can enantioconvergently introduce an ...
F. Zhou +3 more
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On the relative strengths of amide…amide and amide…water hydrogen bonds
Chemical Physics Letters, 1991We have performed Hayes—Stone intermolecular perturbation theory (IMPT) calculations on amide…water and amide…amide complexes in order to estimate the change ΔW in intermolecular interaction energy associated with the hydrogen bond exchange process amide(NH)…water+water…(OC)amide⇔amide(NH)…(OC)amide+water…water.
John B.O. Mitchell, Sarah L. Price
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Reliable Determination of Amidicity in Acyclic Amides and Lactams
The Journal of Organic Chemistry, 2012Two independent computational methods have been used for determination of amide resonance stabilization and amidicities relative to N,N-dimethylacetamide for a wide range of acyclic and cyclic amides. The first method utilizes carbonyl substitution nitrogen atom replacement (COSNAR).
Stephen A, Glover, Adam A, Rosser
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Angewandte Chemie - International Edition, 2018
A new concept for the meta-selective borylation of aromatic amides is described. It has been demonstrated that while esters gave para borylations, amides lead to meta borylations.
Ranjana Bisht, Buddhadeb Chattopadhyay
exaly +2 more sources
A new concept for the meta-selective borylation of aromatic amides is described. It has been demonstrated that while esters gave para borylations, amides lead to meta borylations.
Ranjana Bisht, Buddhadeb Chattopadhyay
exaly +2 more sources
21.1.8 Synthesis of Amides by Transamidation and Amidation of Activated Amides and Esters
2020AbstractThis chapter provides a summary of the recent advances in direct transamidation and amidation reactions of activated amides and esters via transition-metal-catalyzed and transition-metal-free C(acyl) —N and C(acyl) —O bond cleavage as a new disconnection for the synthesis of amide bonds.
G. Li, M. Szostak
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ACS Sustainable Chemistry and Engineering, 2019
By using ambient air as an oxidant, various N-acylated 3-aminoquinoxalin-2(1H)-ones were efficiently synthesized through visible-light-promoted rhodamine B-catalyzed amidation reaction of quinoxalin-2(1H)-ones and amides under metal-free and strong ...
Long-Yong Xie +7 more
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By using ambient air as an oxidant, various N-acylated 3-aminoquinoxalin-2(1H)-ones were efficiently synthesized through visible-light-promoted rhodamine B-catalyzed amidation reaction of quinoxalin-2(1H)-ones and amides under metal-free and strong ...
Long-Yong Xie +7 more
semanticscholar +1 more source
Transition-Metal-Free Activation of Amides by N-C Bond Cleavage.
The chemical record, 2019The amide bond N-C activation represents a powerful strategy in organic synthesis to functionalize the historically inert amide linkage. This personal account highlights recent remarkable advances in transition-metal-free activation of amides by N-C bond
Guangchen Li, M. Szostak
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