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Journal articles on the topic 'Amidation reactions'

Author: Grafiati

Published: 1 April 2023

Last updated: 19 July 2025

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1

Liu, Yunyun, and Baoli Zhao. "Step-Economical C–H Activation Reactions Directed by In Situ Amidation." Synthesis 52, no. 21 (2020): 3211–18. http://dx.doi.org/10.1055/s-0040-1707124.

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Owing to the inherent ability of amides to chelate transition-metal catalysts, amide-directed C–H activation reactions constitute a major tactic in directed C–H activation reactions. While the conventional procedures for these reactions usually involve prior preparation and purification of amide substrates before the C–H activation, the step economy is actually undermined by the operation of installing the directing group (DG) and related substrate purification. In this context, directed C–H activation via in situ amidation of the crude material provides a new protocol that can significantly e

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2

Gao, Yunling. "A new specific mechanism for thioacid/azide amidation: electronic and solvent effects." Open Chemistry 8, no. 2 (2010): 308–19. http://dx.doi.org/10.2478/s11532-009-0139-3.

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AbstractDetailed theoretical studies of azide/thioacid amidation are performed using density functional theory. The calculated results indicate that electronic properties of azide have significant effects on reaction pathways, which result in two distinct mechanisms for electron-rich and electron-poor azide coupling in the base-promoted amidation. For electron-rich azide amidation, after the concerted [3+2] cycloaddition of azide/thiocarboxylate, a new reaction channel is found challenging that recently mentioned, which follows two consecutive, unimolecular reactions with very low activation b

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3

Harahap, Chiko, Tuti Wukirsari, Sri Handayani, and Sumi Hudiyono PWS. "Comparison of the Lipoamide Synthesis by Direct Amidation and via Amidation of Fatty Acid Methyl Esters." Jurnal Kimia Sains dan Aplikasi 27, no. 7 (2024): 328–35. http://dx.doi.org/10.14710/jksa.27.7.328-335.

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In this research, the preparation of lipoamide through direct amidation of fatty acid and via amidation of fatty acid methyl ester (FAME) was compared. The reactivity of aromatic amines and cyclohexylamine for the synthesis of lipoamide was investigated in this research. The performance of saturated and unsaturated fatty acids was also compared. The synthesis of lipoamides via direct amidation was conducted under reflux using a Dean-Stark trap and silica gel as the catalyst. On the other hand, the amidation of FAME was carried out without catalysts and solvent. Both reactions were run simultan

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4

Zhao, Bei, Yang Xiao, Dan Yuan, Chengrong Lu, and Yingming Yao. "Synthesis and characterization of bridged bis(amidato) rare earth metal amides and their applications in C–N bond formation reactions." Dalton Transactions 45, no. 9 (2016): 3880–87. http://dx.doi.org/10.1039/c5dt04217h.

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Eight bis(amidato) rare-earth metal amides were successfully synthesized and well characterized, which exhibited high catalytic activities in both the direct amidation of aldehydes and the addition of amines with carbodiimine.

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5

Kasprzak, Artur, Agnieszka Zuchowska, and Magdalena Poplawska. "Functionalization of graphene: does the organic chemistry matter?" Beilstein Journal of Organic Chemistry 14 (August 2, 2018): 2018–26. http://dx.doi.org/10.3762/bjoc.14.177.

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Reactions applying amidation- or esterification-type processes and diazonium salts chemistry constitute the most commonly applied synthetic approaches for the modification of graphene-family materials. This work presents a critical assessment of the amidation and esterification methodologies reported in the recent literature, as well as a discussion of the reactions that apply diazonium salts. Common misunderstandings from the reported covalent functionalization methods are discussed, and a direct link between the reaction mechanisms and the basic principles of organic chemistry is taken into

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6

Santos, A. Sofia, Artur M. S. Silva, and M. Manuel B. Marques. "Sustainable Amidation Reactions - Recent Advances." European Journal of Organic Chemistry 2020, no. 17 (2020): 2501–16. http://dx.doi.org/10.1002/ejoc.202000106.

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7

Mirzoyeva, G. A., and Sh M. Eyvazova. "Study of the amidation reaction of carboxylic acids and their derivatives." World OF PETROLEUM PRODUCTS 2 (2024): 36–47. http://dx.doi.org/10.32758/2782-3040-2024-0-2-36-47.

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The presented work shows the results of research in the field of studying the amidation reaction of carboxylic acids and their functionally substituted derivatives with various amines. The main patterns of the above reaction are shown, the mechanisms of reactions involving carboxylic acids, as well as their derivatives (esters, anhydrides and acid chlorides) are presented. The main areas of application of the synthesized amide products are considered. It is reported that the reaction of direct amidation of carboxylic acids with amine components can occur in the presence of various catalysts or

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8

Ji, Chong-Lei, Pei-Pei Xie, and Xin Hong. "Computational Study of Mechanism and Thermodynamics of Ni/IPr-Catalyzed Amidation of Esters." Molecules 23, no. 10 (2018): 2681. http://dx.doi.org/10.3390/molecules23102681.

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Nickel catalysis has shown remarkable potential in amide C–N bond activation and functionalization. Particularly for the transformation between ester and amide, nickel catalysis has realized both the forward (ester to amide) and reverse (amide to ester) reactions, allowing a powerful approach for the ester and amide synthesis. Based on density functional theory (DFT) calculations, we explored the mechanism and thermodynamics of Ni/IPr-catalyzed amidation with both aromatic and aliphatic esters. The reaction follows the general cross-coupling mechanism, involving sequential oxidative addition,

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9

Szwedo, Peter, Travis Jumper, Karie Sanford, et al. "Dehydrogenative Conversions of Aldehydes and Amines to Amides Catalyzed by a Nickel(II) Pincer Complex." Catalysts 13, no. 11 (2023): 1423. http://dx.doi.org/10.3390/catal13111423.

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A C-N cross-coupling approach involving oxidative amidations of aromatic aldehydes in the presence of an amide-based nickel(II) pincer catalyst (2) is demonstrated. Upon optimization, quick reaction times (15 min) and an ideal temperature (25 °C) were established and implemented for the conversion of 33 different amide products using only 0.2 mol% of catalyst. Moderate to good turnover numbers (TONs) were obtained for secondary benzamide products, and moderate TONs were obtained for tertiary benzamide products, with the highest turnover number calculated for the 4-chloro-N-(3-phenylpropyl)benz

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10

Morteza, Shiri, Notash Behrouz, Zamanian Fatemeh, Yasaei Zahra, and Ranjbar Maryam. "Palladium-catalyzed tandem reaction of 2-chloroquinoline-3-carbaldehydes and isocyanides." Organic and Biomolecular Chemistry 15, no. 47 (2017): 10073–81. https://doi.org/10.1039/c7ob02043k.

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A facile domino reaction of 2-chloroquinoline-3-carbaldehydes in one and two equivalents of isocyanide has been investigated. Three-component reactions of 2chloroquinoline-3-carbaldehydes, isocyanides and amines are also described. In this Pdcatalyzed reaction under controlled conditions, three novel types of quinoline derivatives were formed via amidation, lactamization or carbamate formation along with the formation of C–C, C–N, and C–O bonds in a one-pot procedure.

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11

Pongracz, Tamas, Aswin Verhoeven, Manfred Wuhrer, and Noortje de Haan. "The structure and role of lactone intermediates in linkage-specific sialic acid derivatization reactions." Glycoconjugate Journal 38, no. 2 (2021): 157–66. http://dx.doi.org/10.1007/s10719-020-09971-7.

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AbstractSialic acids occur ubiquitously throughout vertebrate glycomes and often endcap glycans in either α2,3- or α2,6-linkage with diverse biological roles. Linkage-specific sialic acid characterization is increasingly performed by mass spectrometry, aided by differential sialic acid derivatization to discriminate between linkage isomers. Typically, during the first step of such derivatization reactions, in the presence of a carboxyl group activator and a catalyst, α2,3-linked sialic acids condense with the subterminal monosaccharides to form lactones, while α2,6-linked sialic acids form ami

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12

Buhaienko, Ihor, Maksym Kyrylenko, and Volodymyr Mylenkyi. "Mathematical modeling of the technological process and synthesis of the amidation control system." Proceedings of the NTUU “Igor Sikorsky KPI”. Series: Chemical engineering, ecology and resource saving, no. 1 (March 29, 2022): 55–61. http://dx.doi.org/10.20535/2617-9741.1.2022.254159.

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There is still no exact mathematical model or control system for sodium sulphacyl production, so not all available control systems are accurate and not all possible disturbances of the system during operation have been identified. An urgent problem is to create an optimal mathematical model and use it as the basis for the synthesis of an amidator control system using a controller. In creating a mathematical model for the synthesis of the control system for the amidation process, it is necessary to understand the component of its mechanism. The amidation reaction takes place with a signif

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13

Arkhipenko, Sergey, Marco T. Sabatini, Andrei S. Batsanov, et al. "Mechanistic insights into boron-catalysed direct amidation reactions." Chemical Science 9, no. 4 (2018): 1058–72. http://dx.doi.org/10.1039/c7sc03595k.

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14

Tortajada, Andreu, Marino Börjesson, and Ruben Martin. "Nickel-Catalyzed Reductive Carboxylation and Amidation Reactions." Accounts of Chemical Research 54, no. 20 (2021): 3941–52. http://dx.doi.org/10.1021/acs.accounts.1c00480.

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15

Liu, Yi, Puying Luo, Yang Fu, et al. "Recent advances in the tandem annulation of 1,3-enynes to functionalized pyridine and pyrrole derivatives." Beilstein Journal of Organic Chemistry 17 (September 22, 2021): 2462–76. http://dx.doi.org/10.3762/bjoc.17.163.

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Great progress has been made in the tandem annulation of enynes in the past few years. This review only presents the corresponding reactions of 1,3-enyne structural motifs to provide the functionalized pyridine and pyrrole derivatives. The functionalization reactions cover iodination, bromination, trifluoromethylation, azidation, carbonylation, arylation, alkylation, selenylation, sulfenylation, amidation, esterification, and hydroxylation. We also briefly introduce the applications of the products and the reaction mechanisms for the synthesis of corresponding N-heterocycles.

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16

Szostak, Michal, and Guangchen Li. "Non-Classical Amide Bond Formation: Transamidation and Amidation of Activated Amides and Esters by Selective N–C/O–C Cleavage." Synthesis 52, no. 18 (2020): 2579–99. http://dx.doi.org/10.1055/s-0040-1707101.

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In the past several years, tremendous advances have been made in non-classical routes for amide bond formation that involve transamidation and amidation reactions of activated amides and esters. These new methods enable the formation of extremely valuable amide bonds via transition-metal-catalyzed, transition-metal-free, or metal-free pathways by exploiting chemoselective acyl C–X (X = N, O) cleavage under mild conditions. In a broadest sense, these reactions overcome the formidable challenge of activating C–N/C–O bonds of amides or esters by rationally tackling nN → π*C=O delocalization in am

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17

Wan, Jie-Ping, and Yanfeng Jing. "Recent advances in copper-catalyzed C–H bond amidation." Beilstein Journal of Organic Chemistry 11 (November 17, 2015): 2209–22. http://dx.doi.org/10.3762/bjoc.11.240.

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Copper catalysis has been known as a powerful tool for its ubiquitous application in organic synthesis. One of the fundamental utilities of copper catalysis is in the C–N bond formation by using carbon sources and nitrogen functional groups such as amides. In this review, the recent progress in the amidation reactions employing copper-catalyzed C–H amidation is summarized.

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18

Kumar, Dhivya, Richard E. Mains та Betty A. Eipper. "60 YEARS OF POMC: From POMC and α-MSH to PAM, molecular oxygen, copper, and vitamin C". Journal of Molecular Endocrinology 56, № 4 (2016): T63—T76. http://dx.doi.org/10.1530/jme-15-0266.

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A critical role for peptide C-terminal amidation was apparent when the first bioactive peptides were identified. The conversion of POMC into adrenocorticotropic hormone and then into α-melanocyte-stimulating hormone, an amidated peptide, provided a model system for identifying the amidating enzyme. Peptidylglycine α-amidating monooxygenase (PAM), the only enzyme that catalyzes this modification, is essential; mice lacking PAM survive only until mid-gestation. Purification and cloning led to the discovery that the amidation of peptidylglycine substrates proceeds in two steps: peptidylglycine α-

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19

Roscales, Silvia, and Aurelio G. Csáky. "How to make C–N bonds using boronic acids and their derivatives without transition metals." Chemical Society Reviews 49, no. 15 (2020): 5159–77. http://dx.doi.org/10.1039/c9cs00735k.

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20

Vishe, Mahesh, Radim Hrdina, Amalia I. Poblador-Bahamonde та ін. "Remote stereoselective deconjugation of α,β-unsaturated esters by simple amidation reactions". Chemical Science 6, № 8 (2015): 4923–28. http://dx.doi.org/10.1039/c5sc01118c.

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21

Kadari, Lingaswamy, William Erb, Thierry Roisnel, Palakodety Radha Krishna, and Florence Mongin. "Iodoferrocene as a partner in N-arylation of amides." New Journal of Chemistry 44, no. 37 (2020): 15928–41. http://dx.doi.org/10.1039/d0nj03470c.

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22

Ziyaei Halimehjani, Azim, Petr Beier, Maryam Khalili Foumeshi, Ali Alaei та Blanka Klepetářová. "Tandem Alkylation/Michael Addition Reaction of Dithiocarbamic Acids with Alkyl γ-Bromocrotonates: Access to Functionalized 1,3-Thiazolidine-2-thiones". Synthesis 53, № 13 (2021): 2219–28. http://dx.doi.org/10.1055/a-1372-1619.

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AbstractThiazolidine-2-thiones were prepared via a novel multicomponent reaction of primary amines (amino acids), carbon disulfide, and γ-bromocrotonates. The reaction proceeds via a domino alkylation/intramolecular Michael addition to provide the corresponding thiazolidine-2-thiones in high to excellent yields. By using diamines in this protocol, bis(thiazolidine-2-thiones) derivatives were synthesized. The synthetic utility of the adducts was demonstrated by hydrolysis, amidation, and oxidation reactions.

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23

Steven, Alan. "Micelle-Mediated Chemistry in Water for the Synthesis of Drug Candidates." Synthesis 51, no. 13 (2019): 2632–47. http://dx.doi.org/10.1055/s-0037-1610714.

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Micellar reaction conditions, in a predominantly aqueous medium, have been developed for transformations commonly used by synthetic chemists working in the pharmaceutical industry to discover and develop drug candidates. The reactions covered in this review are the Suzuki–Miyaura, Miyaura borylation, Sonogashira coupling, transition-metal-catalysed CAr–N coupling, SNAr, amidation, and nitro reduction. Pharmaceutically relevant examples of these applications will be used to show how micellar conditions can offer advantages in yield, operational ease, amount of waste generated, transition-metal

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24

Ma, Nan, Zheyuan Liu, Jianhui Huang, and Yanfeng Dang. "Mechanistic studies of Cp*Ir(iii)/Cp*Rh(iii)-catalyzed branch-selective allylic C–H amidation: why is Cp*Ir(iii) superior to Cp*Rh(iii)?" Organic & Biomolecular Chemistry 19, no. 17 (2021): 3850–58. http://dx.doi.org/10.1039/d1ob00446h.

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25

Lin, Chia-Hsin, Bor-Cherng Hong, and Gene-Hsiang Lee. "Asymmetric synthesis of functionalized pyrrolizidines by an organocatalytic and pot-economy strategy." RSC Advances 6, no. 10 (2016): 8243–47. http://dx.doi.org/10.1039/c5ra25103f.

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An enantioselective synthesis of indolizidines was achieved with a one-step purification by sequential asymmetric Michael–oxidative esterification–Michael–reduction–reductive Mannich–amidation reactions.

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26

Wang, Xiao. "Challenges and outlook for catalytic direct amidation reactions." Nature Catalysis 2, no. 2 (2019): 98–102. http://dx.doi.org/10.1038/s41929-018-0215-1.

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27

Xia, Ji-Bao, Yan-Lin Li, and Zheng-Yang Gu. "Transition-Metal-Catalyzed Intermolecular C–H Carbonylation toward Amides." Synlett 32, no. 01 (2020): 07–13. http://dx.doi.org/10.1055/s-0040-1706416.

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The amide linkage is one of the most important structural moieties in both chemistry and biology. Here, we briefly discuss recent advances in catalytic intermolecular C–H carbonylation reactions for the synthesis of amides, with particular attention to our intermolecular C–H amidation of arenes with carbon monoxide and organic azides to produce amides.1 Introduction2 Representative Methods for Amide Synthesis3 C–H Aminocarbonylation with Carbon Monoxide and Amines4 C–H Amidation to Amides with Carbon Monoxide and Azides5 Summary and Outlook

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28

Paggiola, Giulia, Nolwenn Derrien, Jonathan D. Moseley, et al. "Application of bio-based solvents for biocatalysed synthesis of amides with Pseudomonas stutzeri lipase (PSL)." Pure and Applied Chemistry 92, no. 4 (2020): 579–86. http://dx.doi.org/10.1515/pac-2019-0808.

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AbstractBio-based solvents were investigated for the biocatalysed amidation reactions of various ester-amine combinations by Pseudomonas stutzeri lipase (PSL). Reactions were undertaken in a range of green and potentially bio-based solvents including terpinolene, p-cymene, limonene, 2-methyl THF, ɣ-valerolactone, propylene carbonate, dimethyl isosorbide, glycerol triacetate and water. Solvent screenings demonstrated the importance and potential of using non-polar bio-based solvents for favouring aminolysis over hydrolysis; whilst substrate screenings highlighted the unfavourable impact of reac

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29

Belousov, Artem S., Anton L. Esipovich, Evgeny A. Kanakov, and Ksenia V. Otopkova. "Recent advances in sustainable production and catalytic transformations of fatty acid methyl esters." Sustainable Energy & Fuels 5, no. 18 (2021): 4512–45. http://dx.doi.org/10.1039/d1se00830g.

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This review highlights the recent advances in the sustainable production of fatty acid methyl esters and their transformations, including oxidation, amidation, hydrogenation, deoxygenation, ethoxylation, metathesis, and isomerisation reactions.

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30

Kurouchi, Hiroaki. "Diprotonative stabilization of ring-opened carbocationic intermediates: conversion of tetrahydroisoquinoline to triarylmethanes." Chemical Communications 56, no. 59 (2020): 8313–16. http://dx.doi.org/10.1039/d0cc01969k.

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Superacid-promoted conversion of tetrahydroisoquinolines to triarylmethanes via tandem reactions of C–N bond scission, Friedel–Crafts alkylation, C–O bond scission, and electrophilic aromatic amidation was developed.

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31

Rocco, Daniele, Isabella Chiarotto, Leonardo Mattiello, Fabiana Pandolfi, Daniela Zane, and Marta Feroci. "Electrochemical synthesis and amidation of benzoin: benzamides from benzaldehydes." Pure and Applied Chemistry 91, no. 10 (2019): 1709–15. http://dx.doi.org/10.1515/pac-2018-1118.

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Abstract The benzoin condensation starting from benzaldehyde and the subsequent benzoin amidation to benzamide can be efficiently carried out under very mild conditions in an electrolysis cell. Among the advantages of using electrochemistry to generate our active reagents, the use of the easily dosed and non pollutant electron, instead of stoichiometric amounts of redox reagents or bases, usually renders the electrochemical methodology “greener” than classical organic reactions. Benzoin is obtained in good yield (85 %) carrying out the reaction in the room temperature ionic liquid BMIm-BF4. In

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Liu, Bingxian, Bin Li, and Baiquan Wang. "Ru(ii)-catalyzed amidation reactions of 8-methylquinolines with azides via C(sp3)–H activation." Chemical Communications 51, no. 91 (2015): 16334–37. http://dx.doi.org/10.1039/c5cc06230f.

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33

Mkhonazi, Blessing D., Malibongwe Shandu, Ronewa Tshinavhe, Sandile B. Simelane, and Paseka T. Moshapo. "Solvent-Free Iron(III) Chloride-Catalyzed Direct Amidation of Esters." Molecules 25, no. 5 (2020): 1040. http://dx.doi.org/10.3390/molecules25051040.

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Amide functional groups are prominent in a broad range of organic compounds with diverse beneficial applications. In this work, we report the synthesis of these functional groups via an iron(iii) chloride-catalyzed direct amidation of esters. The reactions are conducted under solvent-free conditions and found to be compatible with a range of amine and ester substrates generating the desired amides in short reaction times and good to excellent yields at a catalyst loading of 15 mol%.

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34

Wang, Chao, Lingling Huang, Min Lu, et al. "Anionic phenoxy-amido rare-earth complexes as efficient catalysts for amidation of aldehydes with amines." RSC Adv. 5, no. 115 (2015): 94768–75. http://dx.doi.org/10.1039/c5ra20285j.

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A series of anionic organo-rare-earth amido complexes stabilized by dianionic phenoxy-amido ligands were synthesized, and their catalytic property for the amidation reactions of aldehydes with amines was explored.

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Mahato, Sachinta, Sougata Santra, Grigory V. Zyryanov, and Adinath Majee. "Metal-Free Amidation Reactions of Terminal Alkynes with Benzenesulfonamide." Journal of Organic Chemistry 84, no. 6 (2019): 3176–83. http://dx.doi.org/10.1021/acs.joc.8b03065.

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Sumarna, Sabir, Firdaus Firdaus, and Nunuk H. Soekamto. "Sintesis Turunan Amida N-4-O-Asetilferuloilmorfolina dari Asam Ferulat Melalui Metode Konversi Tidak Langsung." Indonesian Journal of Chemical Research 4, no. 1 (2016): 331–34. http://dx.doi.org/10.30598/ijcr.2016.4-sab.

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Synthesis of N-4-O-asetilferuloylmorpholine from ferulic acid via indirect conversion methods with acetylation, chlorination and amidation (in situ) reactions have been conducted. The acetylation was carried out using acetic anhydride reagent in pyridine solvent at room temperature for 6 hours. The chlorination was performed with thionyl chloride in benzene solvent by reflux at 75Â°C for 4 hours, proceeded by in situ amidation utilizing morpholine in the presence of triethylamine and pyridine using dichloromethane solvent at room temperature. The target molecule as white crystalline solids wit

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37

Handogo, Renanto, Michael Adrian Subagio, Kevin Karuniawan, Vibianti Dwi Pratiwi, and Juwari P. Sutikno. "Zero CO₂ emission preliminary plant design of cocamidopropyl betaine (CAPB) surfactant from hydrogenated palm kernel oil (HPKO)." IOP Conference Series: Earth and Environmental Science 1171, no. 1 (2023): 012046. http://dx.doi.org/10.1088/1755-1315/1171/1/012046.

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Abstract Cocamidopropyl betaine (CAPB) is major raw material to generate surfactant and there is only one plant in Indonesia producing CAPB. It is predicted the demand of CAPB in Indonesia reach 53,000 ton annually. Following this journal, a surfactant plant with zero CO2 emission is designed which located at Special Economic Region (KEK) Sei Mangkei, North Sumatra with 70,000 TPA capacity production. Based on the analysis of mass and heat balance need 14,500 TPA HPKO, 81,500 TPA CWS, 6,000 TPA LPS, 2,650 TPA MPS. According to equipment specification, 49,564.34 kJ/hr electricity is needed for

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Chen, Mei-Lan, Jian-Qing Min, Sheng-Dong Pan, and Mi-Cong Jin. "Surface core–shell magnetic polymer modified graphene oxide-based material for 2,4,6-trichlorophenol removal." RSC Advances 4, no. 108 (2014): 63494–501. http://dx.doi.org/10.1039/c4ra14150d.

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A novel well-designed graphene oxide-based magnetic polymer (GO-Fe<sub>3</sub>O<sub>4</sub>@P) has been successfully synthesizedviadistillation–precipitation polymerization, ring-opening and amidation reactions and showed good adsorption capacity to 2,4,6-TCP.

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Li, C., C. D. Oldham та S. W. May. "NN-dimethyl-1,4-phenylenediamine as an alternative reductant for peptidylglycine α-amidating mono-oxygenase catalysis". Biochemical Journal 300, № 1 (1994): 31–36. http://dx.doi.org/10.1042/bj3000031.

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C-terminal alpha-amidation is a structural feature essential to the biological activity of many peptide hormones. Peptidylglycine alpha-amidating mono-oxygenase (PAM; EC 1.14.17.3) catalyses conversion of glycine-extended peptide hormone precursors into their corresponding alpha-hydroxyglycine derivatives. This reaction is the first step in the C-terminal amidation process. We report here that in the presence of molecular O2, copper and PAM substrate, NN-dimethyl-1,4-phenylenediamine (DMPD) serves as the requisite electron donor for the mono-oxygenase, being oxidized in the process to a stable

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40

MOORE, Allison B., and Sheldon W. MAY. "Kinetic and inhibition studies on substrate channelling in the bifunctional enzyme catalysing C-terminal amidation." Biochemical Journal 341, no. 1 (1999): 33–40. http://dx.doi.org/10.1042/bj3410033.

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A series of experiments has been conducted to investigate the possibility that substrate channelling might occur in the bifunctional forms of enzymes carrying out C-terminal amidation, a post-translational modification essential to the biological activity of many neuropeptides. C-terminal amidation entails sequential action by peptidylglycine mono-oxygenase (PAM, EC 1.14.17.3) and peptidylamidoglycolate lyase (PGL, EC 4.3.2.5), with the mono-oxygenase catalysing conversion of a glycine-extended pro-peptide into the corresponding α-hydroxyglycine derivative, which is then converted by the lyase

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Kasahara, Takahito, and Marco A. Ciufolini. "Further studies toward himandrine via sequential oxidative amidation – intramolecular Diels–Alder reactions." Canadian Journal of Chemistry 91, no. 1 (2013): 82–90. http://dx.doi.org/10.1139/cjc-2012-0340.

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Exploratory work toward the alkaloid himandrine evaluated the directing ability of a pyrrolidine C-3 substituent in a diastereotopic group elective intramolecular Diels–Alder reaction of a spirodienone obtained by the oxidative amidation of a phenol. The study also defined a technique for the construction of ring D of the alkaloid.

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Bera, Shyamal Kanti, Rosalin Bhanja, and Prasenjit Mal. "DDQ in mechanochemical C–N coupling reactions." Beilstein Journal of Organic Chemistry 18 (June 1, 2022): 639–46. http://dx.doi.org/10.3762/bjoc.18.64.

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2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) is a commonly known oxidant. Herein, we report that DDQ can be used to synthesize 1,2-disubstituted benzimidazoles and quinazolin-4(3H)-ones via the intra- and intermolecular C–N coupling reaction under solvent-free mechanochemical (ball milling) conditions. In the presence of DDQ, the intramolecular C(sp2)–H amidation of N-(2-(arylideneamino)phenyl)-p-toluenesulfonamides leads to 1,2-disubstituted benzimidazoles and the one-pot coupling of 2-aminobenzamides with aryl/alkyl aldehydes resulted in substituted quinazolin-4(3H)-one derivatives in hig

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Hernández, José G., Karen J. Ardila-Fierro, Dajana Barišić, and Hervé Geneste. "Multi-faceted reactivity of N-fluorobenzenesulfonimide (NFSI) under mechanochemical conditions: fluorination, fluorodemethylation, sulfonylation, and amidation reactions." Beilstein Journal of Organic Chemistry 18 (February 7, 2022): 182–89. http://dx.doi.org/10.3762/bjoc.18.20.

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In the search for versatile reagents compatible with mechanochemical techniques, in this work we studied the reactivity of N-fluorobenzenesulfonimide (NFSI) by ball milling. We corroborated that, by mechanochemistry, NFSI can engage in a variety of reactions such as fluorinations, fluorodemethylations, sulfonylations, and amidations. In comparison to the protocols reported in solution, the mechanochemical reactions were accomplished in the absence of solvents, in short reaction times, and in yields comparable to or higher than their solvent-based counterparts.

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Yoshino, Tatsuhiko, and Shigeki Matsunaga. "Cp*CoIII-Catalyzed C–H Functionalization and Asymmetric Reactions Using External Chiral Sources." Synlett 30, no. 12 (2019): 1384–400. http://dx.doi.org/10.1055/s-0037-1611814.

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This account describes Cp*CoIII-catalyzed C–H functionalization reactions developed in our group between 2013 and 2018. Cp*CoIII catalysts not only serve as inexpensive alternatives to Cp*RhIII catalysts but also exhibit unique reactivity and selectivity in several transformations. In the latter part of this review, we introduce catalytic asymmetric C–H functionalization reactions using achiral RhIII or CoIII catalysts with chiral disulfonates or carboxylic acids as external chiral sources.1 Introduction and Overview2 Cp*CoIII-Catalyzed C–H Functionalization Reactions2.1 C–H Addition Reactions

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Wang, Danfeng, Hai Huang, and Xiaolin Zhu. "Development of anthrazoline photocatalysts for promoting amination and amidation reactions." Chemical Communications 58, no. 21 (2022): 3529–32. http://dx.doi.org/10.1039/d1cc07315j.

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Herein, we report the synthesis, photophysical and electrochemical properties of a series of anthrazoline organophotocatalysts, as well as their photocatalytic competencies in promoting C–N bond formation in combination with nickel catalyst.

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Pravinsing, S. Girase1 &. Bhata R. Chaudhari*2. "SYNTHETIC METHODS OF CARBOXYAMIDES BY USING ISOCYANIDES." GLOBAL JOURNAL OF ENGINEERING SCIENCE AND RESEARCHES 6, no. 4 (2019): 1–7. https://doi.org/10.5281/zenodo.2630901.

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The amide functional group is an important and ubiquitous in nature as well as synthetic organic chemicals. <em>N</em>-Aryl amides are valuable compounds that are widely present in pharmaceutically active compounds, agrochemicals, polymers, important organic functional materials and a vast number of naturally occurring and artificial molecules with biological activity [1]. In the present review gives overall scenario and opportunities amidation reactions.    

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Vázquez, Ester, and Maurizio Prato. "Functionalization of carbon nanotubes for applications in materials science and nanomedicine." Pure and Applied Chemistry 82, no. 4 (2010): 853–61. http://dx.doi.org/10.1351/pac-con-09-10-40.

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Carbon nanotubes (CNTs) can be functionalized using a variety of efficient protocols. Especially, esterification and amidation reactions are exploited along with 1,3-dipolar cycloadditions. The use of microwaves (MWs) to activate the reactivity of CNTs is also reported. Innovative NMR methodologies can be introduced to investigate the covalent attachment of organic moieties to CNTs.

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Cho, Inha, Zhi-Jun Jia, and Frances H. Arnold. "Site-selective enzymatic C‒H amidation for synthesis of diverse lactams." Science 364, no. 6440 (2019): 575–78. http://dx.doi.org/10.1126/science.aaw9068.

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A major challenge in carbon‒hydrogen (C‒H) bond functionalization is to have the catalyst control precisely where a reaction takes place. In this study, we report engineered cytochrome P450 enzymes that perform unprecedented enantioselective C‒H amidation reactions and control the site selectivity to divergently construct β-, γ-, and δ-lactams, completely overruling the inherent reactivities of the C‒H bonds. The enzymes, expressed in Escherichia coli cells, accomplish this abiological carbon‒nitrogen bond formation via reactive iron-bound carbonyl nitrenes generated from nature-inspired acyl-

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Martin, Stephen F., Michael P. Dwyer, and Christopher L. Lynch. "Application of AlMe3-mediated amidation reactions to solution phase peptide synthesis." Tetrahedron Letters 39, no. 12 (1998): 1517–20. http://dx.doi.org/10.1016/s0040-4039(98)00071-9.

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Ganiek, Maximilian A., Matthias R. Becker, Guillaume Berionni, Hendrik Zipse, and Paul Knochel. "Barbier Continuous Flow Preparation and Reactions of Carbamoyllithiums for Nucleophilic Amidation." Chemistry – A European Journal 23, no. 43 (2017): 10280–84. http://dx.doi.org/10.1002/chem.201702593.

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