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Academic literature on the topic 'Amino group'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Amino group"

1

Dong, Jinhuan, Mengying Jia, and Xianxiu Xu. "Aryl groups, supplement of amino protecting group chemistry!" Chinese Chemical Letters 32, no. 6 (June 2021): 1831–33. http://dx.doi.org/10.1016/j.cclet.2021.01.034.

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Manoharan, Muthiah, Thazha P. Prakash, Isabelle Barber-peoc'h, Balkrishen Bhat, Guillermo Vasquez, Bruce S. Ross, and P. Dan Cook. "A New Protecting Group Strategy for Amino Groups in Oligonucleotide Chemistry: CEOC Group." Nucleosides and Nucleotides 18, no. 6-7 (June 1999): 1199–201. http://dx.doi.org/10.1080/07328319908044661.

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Li, Zhiwei, Qiulong Hu, Shaoying Kang, Jiangsheng Li, Heping Li, and Xingyao Xiong. "Practical and Scalable Synthesis of Isosorbide Derivatives Containing an Active Amine Group." Journal of Chemical Research 42, no. 4 (April 2018): 215–18. http://dx.doi.org/10.3184/174751918x15241285739442.

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The synthesis of two derivatives of isosorbide containing an amine group, 6-amino-6-deoxy- O-3-methyl-isosorbide and 6-amino- O-3-benzoyl-6-deoxy-isosorbide, has been achieved. These compounds provide scope for the introduction of additional groups via their amino functions and thereby can provide access to novel isosorbide derivatives that can be screened for biological activity.

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Heyboer, N., G. Heymens Visser, and K. E. T. Kerling. "Note on the conversion of the amino group of amino acids into the nitroguanidino group." Recueil des Travaux Chimiques des Pays-Bas 81, no. 1 (September 2, 2010): 69–72. http://dx.doi.org/10.1002/recl.19620810110.

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Kinoshita, Hideki, Katsuhiko Inomata, Takuo Kameda, and Hiroshi Kotake. "THE CINNAMYLOXYCARBONYL GROUP AS A NEW AMINO-PROTECTING GROUP." Chemistry Letters 14, no. 4 (April 5, 1985): 515–18. http://dx.doi.org/10.1246/cl.1985.515.

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YOSHIMURA, Tomokazu, and Shiho YADA. "Amino Acid Surfactants with Hydroxy Group." Oleoscience 20, no. 9 (2020): 425–30. http://dx.doi.org/10.5650/oleoscience.20.425.

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Dekany, Gyula, Laurent Bornaghi, John Papageorgiou, and Stephen Taylor. "A novel amino protecting group: DTPM." Tetrahedron Letters 42, no. 17 (April 2001): 3129–32. http://dx.doi.org/10.1016/s0040-4039(01)00366-5.

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Manoharan, Muthiah, Thazha P. Prakash, Isabelle Barber-Peoc'h, Balkrishen Bhat, Guillermo Vasquez, Bruce S. Ross, and Cook P. Dan Cook P. Dan. "ChemInform Abstract: A New Protecting Group Strategy for Amino Groups in Oligonucleotide Chemistry: CEOC Group." ChemInform 30, no. 43 (June 13, 2010): no. http://dx.doi.org/10.1002/chin.199943226.

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Berkowitz, David B., and Michelle L. Pedersen. "Simultaneous Amino and Carboxyl Group Protection for .alpha.-Branched Amino Acids." Journal of Organic Chemistry 59, no. 18 (September 1994): 5476–78. http://dx.doi.org/10.1021/jo00097a064.

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Barrett, Graham C. "ChemInform Abstract: Thioacylation of the Amino Group of an Amino Acid." ChemInform 31, no. 40 (October 3, 2000): no. http://dx.doi.org/10.1002/chin.200040267.

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Dissertations / Theses on the topic "Amino group"

1

Heydenrych, Greta. "New amino- and titanoxycarbene complexes of group 6 metals." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52355.

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O'Sullivan, Michael B. "Homochiral group transfer via diazocarbonyl intermediates derived from natural amino acids." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388067.

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Booysen, Irvin Noel. "Rhenium(V)-Imido complexes with potentially multidentate ligands containing the amino group." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/479.

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The complex trans-[Re(dab)Cl3(PPh3)2] (H2dab=1,2-diaminobenzene) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2dab in ethanol. The ligand dab is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only, in a distorted octahedral coordination geometry around the metal ion. The complex trans-[Re(ada)Cl3(PPh3)2] (H2ada=2-aminodiphenylamine) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2ada in acetonitrile. The ligand ada is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only, in a distorted octahedral coordination geometry around the metal ion. Surprisingly, the Re-Cl bond length trans to the Re=N bond is shorter than the two equatorial Re-Cl bond lengths. The reaction of equimolar quantities of cis-[ReO2I(PPh3)2] with 5,6-diamino-1,3- dimethyluracil (H2ddd) in acetonitrile led to the formation of [Re(ddd)(Hddd)I(PPh3)2](ReO4). The X-ray crystal structure shows that the ligand ddd is coordinated monodentately through the doubly deprotonated amino nitrogen and is therefore present as an imide. The chelate Hddd is coordinated bidentately via the neutral amino nitrogen, which is coordinated trans to the imido nitrogen, and the singly deprotonated amido nitrogen, trans to the iodide. The reaction of equimolar quantities of [NH4(ReO4)] with H2ddd in methanol under reflux conditions led to the isolation of [C12H12N6O4] as only product. The [ReO4]- ion is therefore instrumental in the formation of [C12H12N6O4], and since the product contains no rhenium in any oxidation state, the conclusion is that [ReO4]- catalyses the oxidative deamination of H2ddd. The X-ray crystal structure consists of two centrosymmetric, tricyclic rings, comprising a central pyrazine ring and two terminal pyrimidine rings. The reaction of a twofold molar excess of H2apb (H2apb=2-(2-aminophenyl)-1Hbenzimidazole) with trans-[ReO2(py)4]Cl in ethanol gave the green product of the formulation [ReO(Hapb)(apb)] in good yield. The rhenium atom lies in a distorted trigonal-bipyramidal environment. The two imidazole N(2) atoms lie in the apical positions trans to each other, with the oxo-oxygen and two amido N(1) atoms in the trigonal plane. The complex has C2-symmetry. The two amino groups are singly deprotonated and provide a negative charge each, so that they are coordinated as amides. The oxo group provides two negative charges. In order to obtain electroneutrality for the rhenium(V) complex, the two coordinated imidazole nitrogens provide one negative charge. The complex salt trans-[Re(mps)Cl(PPh3)2](ReO4) (H3mps=N-(2-amino-3- methylphenyl)salicylideneimine) was prepared by the reaction of trans- [ReOCl3(PPh3)2] with a twofold molar excess of H3mps. The X-ray crystal structure shows that the trianionic ligand mps acts as a tridentate chelate via the doubly deprotonated amino nitrogen (which is present in trans- [Re(mps)Cl(PPh3)2](ReO4) as an imide), the neutral imino nitrogen and the deprotonated phenolic oxygen. The [ReO4]- anion has approximately regular tetrahedral geometry. Two significant hydrogen bonds are formed between two of the perrhenyl oxygens and the water of crystallization. The six-coordinated complex cis-[Re(mps)Cl2(PPh3)2] was prepared by the reaction of trans-[ReOCl3(PPh3)2] with a twofold molar excess of H3mps in benzene. The Xray crystal structure shows that the mps ligand coordinates as a tridentate chelate via the doubly deprotonated 2-amino nitrogen, the neutral imino nitrogen and the phenolate oxygen. The imide and phenolate oxygen coordinate trans to each other in a distorted octahedral geometry around the rhenium(V) centre, with the two chlorides in cis positions.

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Zhou, Guannan. "Polycondensation of Bridged Amino-Functionalized Trialkoxysilanes." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etd/1292.

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The reduction of CO2 emission has been a worldwide mission to resolve global warming predicament. Mesoporous silsesquioxanes, which stabilized by organobridges and has high content aminon absorption site, can serve as a potential CO2 adsorbent. Synthesis of such material is done by hydrolysis and polycondensation of trialkoxysilane. The fastest gelation was observed at reaction in the absence of acids or bases. However, addition of surfactant to the reaction mixture catalyzed formation of silsesquioxanes in acidic media. Obtained materials are strongly hydrophilic and possess a high thermostability. Study of particle size distributions showed that in all cases it was bimodal. The largest particles formed in basic media. Mesoporous silsesquioxanes were obtained from bridged alkyltrimethoxysilanes in the presence of surfactants.

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Booysen, Irvin Noel. "Rhenium (I) and (V) complexes with potentially mulidentate ligands containing the Amino group." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1270.

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The complex trans-[Re(dab)Cl3(PPh3)2] (H2dab = 1,2-diaminobenzene) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2dab in ethanol. The ligand dab is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only in a distorted octahedral coordination geometry around the metal ion. The complex trans- [Re(ada)Cl3(PPh3)2] (H2ada = 2-aminodiphenylamine) was prepared from the reaction of trans-[ReOCl3(PPh3)2] with H2ada in acetonitrile. The ligand ada is coordinated to the rhenium(V) centre through a dianionic imido nitrogen only, in a distorted octahedral coordination geometry around the metal ion. The ‘2 + 1’ complex fac- [Re(CO)3(Hamp)(amp)] (Hamp = 2-aminophenol) was isolated from the reaction of a two molar ratio of Hamp with [Re(CO)5Br] in toluene. The reaction of a 1:1 molar ratio of [Re(CO)5Br] and H2ada led to the isolation of the Re(I) complex, fac- [Re(CO)3Br(H2ada)]. The reaction of equimolar quantities of cis-[ReO2I(PPh3)2] with 5,6-diamino-1,3- dimethyluracil (H2ddd) in acetonitrile led to the formation of [Re(ddd)(Hddd)I(PPh3)2](ReO4). The X-ray crystal structure shows that the ligand ddd is coordinated monodentately through the doubly deprotonated amino nitrogen and is therefore present as an imide. The chelate Hddd is coordinated bidentately via the neutral amino nitrogen, which is coordinated trans to the imido nitrogen, and the singly deprotonated amido nitrogen, trans to the iodide. The reaction of trans-[ReOCl3(PPh3)2] with N-(2-aminobenzylidene)-5-amino-1,3-dimethyl uracil (H3dua) in ethanol gave a mixed crystal which contains both the neutral oxorhenium(V) complex [ReOCl(Hdua)] and the imido rhenium(V) [Re(dua)Cl2(PPh3)] in an equimolar ratio in the asymmetric unit. The reaction of equimolar quantities of [NH4(ReO4)] with H2ddd in methanol under reflux led to the isolation of [C12H12N6O4] as only product. The [ReO4]- anion is therefore instrumental in the formation of [C12H12N6O4], and since the product contains no rhenium in any oxidation state, the conclusion is that [ReO4]- catalyses the oxidative deamination Abstract I.N. Booysen Nelson Mandela Metropolitan University vii of H2ddd. The X-ray crystal structure consists of two centrosymmetric, tricyclic rings, comprising a central pyrazine ring and two terminal pyrimidine rings. The reaction of 2-(2-aminophenyl)benzothiazole (Habt) with [Re(CO)5Br] led to the isolation of the rhenium(I) complex fac-[Re(Habt)(CO)3Br]. With trans-[ReOCl3(PPh3)2], the ligand Habt decomposed to form the oxofree rhenium(V) complex [Re(itp)2Cl(PPh3)] (itp = 2-amidophenylthiolate). From the reaction of trans-[ReOBr3(PPh3)2] with 2-(2- hydroxyphenyl)benzothiazole (Hhpd) the complex [ReVOBr2(hpd)(PPh3)] was obtained. The reaction of a twofold molar excess of H2apb (2-(2-aminophenyl)-1-benzimidazole) with trans-[ReO2(py)4]Cl in ethanol gave the green product of formulation [ReO(Hapb)(apb)] in good yield. The rhenium atom lies in a distorted trigonalbipyramidal environment. The two imidazole N(2) atoms lie in the apical positions trans to each other, with the oxo-oxygen and two amido N(1) atoms in the trigonal plane. A new nitrosylrhenium(II) complex salt, [Re(NO)BrL2(PPh3)2](ReO4) (H2L2 = 2-amino-5- (triphenylphosphino)phenol), is the first example of a complex containing the triphenylphosphonium-amidophenolate ligand L2, formed by the nucleophilic attack of a PPh3 on a coordinated amidophenolate ring. The complex salt trans-[Re(mps)Cl(PPh3)2](ReO4) (H3mps = N-(2-amino-3- methylphenyl)salicylideneimine) was prepared by the reaction of trans-[ReOCl3(PPh3)2] with a twofold molar excess of H3mps. The X-ray crystal structure shows that the trianionic ligand mps acts as a tridentate chelate via the doubly deprotonated amino nitrogen (an imide), the neutral imino nitrogen and the deprotonated phenolic oxygen. The six-coordinated complex cis-[Re(mps)Cl2(PPh3)2] was prepared by the reaction of trans-[ReOCl3(PPh3)2] with a twofold molar excess of H3mps in benzene. The X-ray crystal structure show that the mps ligand coordinates as a tridentate chelate via the doubly deprotonated 2-amino nitrogen, the neutral imino nitrogen and the phenolate oxygen. The imide and phenolate oxygen coordinate trans to each other in a distorted octahedral geometry, around the rhenium(V) centre, with the two chlorides in cis positions. A new oxofree rhenium(V) complex salt, [Re(bbd)2](ReO4) ( H2bbd = N-(2- Abstract I.N. Booysen Nelson Mandela Metropolitan University viii aminobenzylidene)benzene-1,2-diamine), has been synthesized and the chelates bbd are coordinated as dianionic tridentate N,N,N-donor diamidoimines. The rhenium(V) ion is centered in a distorted trigonal prism. The rhenium(I) compound fac-[Re(CO)3(daa)].Hpab.H2O (Hpab = N1,N2-(1,2- phenylene)bis(2-aminobenzamide); Hdaa = 2-amino-N-(2-aminophenyl)benzamide) was synthesized from the reaction of [Re(CO)5Br] with a two equivalents of Hpab in toluene. The monoanionic tridentate ligand daa was formed by the rhenium-mediated cleavage of an amido N-C bond of the potentially tetradentate ligand Hpab. Daa is coordinated as a diaminoamide via three nitrogen-donor atoms. The reaction of a twofold molar excess of H2amben (H2amben = N1,N2-bis(2-aminobenzylidene)ethane-1,2-diamine) with trans- [ReOBr3(PPh3)2] gave the oxorhenium(V) cationic complex [ReO(amben)]X (X = Br-, PF6 -). The Re(V) oxo-bridged compound, {μ-O}[ReO(omben)]2.H2O (H2omben = N1,N2- bis(2-hydroxybenzylidene)ethane-1,2-diamine) was isolated from the reaction of a 2:1 molar ratio of H2omben and trans-[ReO2(py)4]Cl in methanol. The seven-coordinate rhenium(III) complex cation [ReIII(dhp)(PPh3)2]+ was isolated as the [ReO4]- salt from the reaction of cis-[ReVO2I(PPh3)2] with 2,6-bis(2- hydroxyphenyliminomethyl)pyridine (H2dhp) in ethanol. In the complex fac- [Re(CO)3(H2dhp)Br], prepared from [Re(CO)5Br] and H2dhp in toluene, the H2dhp ligand acts as a neutral bidentate N,N-donor chelate. An equimolar ratio reaction of 2-aminobenzaldehyde and 2-(2-aminophenyl)-1- benzimidazole in methanol led to 2-(5,6-dihydrobenzimidazolo[1,2-c]-quinazolin-6- yl)aniline. In an attempt to explore the template formation of this class of ligand with rhenium, the reaction of salicylaldehyde and 2-(2-aminophenyl)-1-benzimidazole in ethanol which was followed by the addition of trans-[ReOBr3(PPh3)2] led to the formation of the salt, 6-(2-hydroxyphenyl)-5,6-dihydrobenzimidazolo[1,2-c]quinazolin- 12-ium bromide. The compound 6-(2-methylthiophenyl)-5,6-dihydrobenzimidazolo[1,2- c]quinazolin-12-ium was synthesized via the reaction of 2-aminobenzaldehyde and 2- methylthiobenzaldehyde in methanol.

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Miller, Suzanne M. "Examination of specific amino acid residues of desulfovibrio desulfuricans cytochrome C₃ in electron transfer." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4252.

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Thesis (M.S.)--University of Missouri-Columbia, 2005.
"December 2005" The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Vita. Includes bibliographical references.

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Lundberg, Helena. "Group (IV) Metal-Catalyzed Direct Amidation : Synthesis and Mechanistic Considerations." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-116955.

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The amide unit constitutes the backbone of proteins, and it is present in a large number of pharmaceutically active molecules, polymeric materials such as nylon and Kevlar, as well as in food additives like aspartame. Amides are produced in enormous amounts every year, thus, environmentally friendly and selective methods for their formation are of great importance. This thesis deals with the direct formation of amides from non-activated carboxylic acids and amines with the aid of group (IV) metal complexes. Water is the only by-product of this environmentally benign process. This fact stands in contrast to the most common methods for amide formation to date, which involve the use of waste-intensive, expensive and often toxic coupling reagents. The catalytic protocols presented herein use titanium, zirconium and hafnium complexes under mild reaction conditions to produce amides in good to excellent yields. Furthermore, carbamates are demonstrated to be suitable sources of gaseous amines for the formation of primary and tertiary amides under catalytic conditions. In addition, preliminary results from on-going mechanistic investigations of the zirconium- and hafnium-catalyzed processes are presented.
Amidbindningen är en kemisk enhet som utgör ryggraden i proteiner, och som även återfinns i en stor mängd läkemedelsmolekyler, polymera material som nylon och Kevlar, samt i tillsatser i livsmedelsindustrin, exempelvis aspartam. Amider produceras i enorma mängder varje år, och det är av stor vikt att utveckla miljövänliga och selektiva metoder för deras framställning. Denna avhandling behandlar direkt amidering av icke-aktiverade karboxylsyror och aminer med hjälp av katalytiska mängder metallkomplex, baserade på titan, zirkonium och hafnium. Den enda biprodukten från denna amideringsreaktion är vatten. Jämfört med de metoder som generellt används idag för amidsyntes, så är de presenterade metoderna avsevärt mer miljövänliga med avseende på toxicitet hos reagensen såväl som på mängden avfall som genereras. Dessutom redovisas här en katalytisk metod för syntes av primära och tertiära amider genom att använda olika karbamat som källa till gasformiga aminer, vilka annars kan vara praktiskt svåra att arbeta med. Preliminära resultat från en pågående mekanistisk studie av de zirkonium- och hafnium-katalyserade processerna är också inkluderade.

At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 2: Accepted.

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Göring, M., A. Seifert, K. Schreiter, P. Müller, and S. Spange. "A non-aqueous procedure to synthesize amino group bearing nanostructured organic–inorganic hybrid materials." Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-152006.

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Amino-functionalized organic–inorganic hybrid materials with a narrow distributed nanostructure of 2–4 nm in size were obtained by means of a template-free and non-aqueous procedure. Simultaneous twin polymerization of novel amino group containing twin monomers with 2,2′-spirobi[4H-1,3,2-benzodioxasiline] has been applied for this purpose. The amino groups of the organic–inorganic hybrid material are useful for post derivatization
Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich

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Inokuma, Tsubasa. "Development of Novel Hydrogen-Bond Donor Catalysts Bearing Amino or Hydroxy Group for Asymmetric Synthesis." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/152053.

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Zhu, Li. "Studies of soy protein adhesive performance on the effects of ph, amino acid group, and temperature /." Search for this dissertation online, 2006. http://wwwlib.umi.com/cr/ksu/main.

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Books on the topic "Amino group"

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Patai, Saul, ed. The Chemistry of Amino, Nitroso, Nitro and Related Groups. Chichester, UK: John Wiley & Sons, Ltd, 1996. http://dx.doi.org/10.1002/047085720x.

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Phillips, Steven Paul. A study of amine protecting group stability in polymer-supported synthesis. Wolverhampton: WolverhamptonPolytechnic, 1990.

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Bowers, Simeon George. A new and orthogonal amine protecting group and a strategy towards two-directional oligosaccharide syntheses. Birmingham: University of Birmingham, 1998.

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Lednicer, Daniel. The organic chemistry of drug synthesis. New York: Wiley, 1995.

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Lednicer, Daniel. The organic chemistry of drug synthesis. Chichester: Wiley, 1990.

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Ricci, Alfredo, ed. Amino Group Chemistry. Wiley, 2007. http://dx.doi.org/10.1002/9783527621262.

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Rabier, Daniel. Amino Acids. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199972135.003.0083.

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Amino acids present in the different biological fluids belong to two groups: the protein group, with the 21 classical amino acids constituting the backbone of the protein, and the nonprotein group, appearing in different metabolic pathways as intermediate metabolites. It is important to know and to be able to recognize the latter, as they are the markers of many inherited metabolic diseases. Three kinds of pathways must be considered: the catabolic pathways, the synthesis pathways, and the transport pathways. A disorder on a catabolic pathway induces an increase of all metabolites upstream and so an increase of the starting amino acid in all fluids. Any disorder on the synthetic pathway of a particular amino acid will induce a decrease of this amino acid in all fluids. When a transporter is located on a plasma membrane, its deficiency will result in normal or low concentration in plasma concomitant to a high excretion in urine.

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Amino Group Chemistry: From Synthesis to the Life Sciences. Wiley-VCH, 2008.

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1939-, Ricci Alfredo, ed. Amino group chemistry: From synthesis to the life sciences. Weinheim: John Wiley & Sons, Inc., 2008.

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1939-, Ricci Alfredo, ed. Amino group chemistry: From synthesis to the life sciences. Weinheim: John Wiley & Sons, Inc., 2008.

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Book chapters on the topic "Amino group"

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Gooch, Jan W. "Aliphatic Amino Group." In Encyclopedic Dictionary of Polymers, 26. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_414.

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Tadaki, Toshihiro, Iwakazu Hattori, and Fumio Tsutsumi. "Polymerization of Butadiene with Noveltert-Amino Group Initiator." In ACS Symposium Series, 62–76. Washington, DC: American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0696.ch005.

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Krass, Norbert, Ludger Wessjohann, Dahai Yu, and Armin Meijere. "Cyclopropyl Group Containing Amino Acids From α-Chlorocyclopropylidenacetates." In Strain and Its Implications in Organic Chemistry, 509–12. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0929-8_42.

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Holmes, C. P., and B. Kiangsoontra. "Development of a new photo-removable protecting group for the amino and carboxyl groups of amino acids." In Peptides, 110–12. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0683-2_31.

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Munegumi, Toratane, Tokanori Yoshii, Masahide Nakamura, and Kunie Sakurai. "Synthesis of Peptide Mimetics and Amino Acid Mimetics Bearing Aminoxy Instead of Amino Group." In Peptides: The Wave of the Future, 608–9. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0464-0_282.

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Kim, Jungahn, Jae Cheol Cho, Keon Hyeong Kim, Kwang Ung Kim, Won Ho Jo, and Roderic P. Quirk. "Anionic Synthesis of Macromonomer Carrying Amino Group Using Diphenylethylene Derivative." In ACS Symposium Series, 85–95. Washington, DC: American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0704.ch007.

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Hu, Jianjun, and Fan Zhang. "Improving Protein Localization Prediction Using Amino Acid Group Based Physichemical Encoding." In Bioinformatics and Computational Biology, 248–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00727-9_24.

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Salvadori, Severo, Roberto Tomatis, Gianfranco Balboni, Paolo Marchetti, Ferruccio D’Angeli, and Lawrence H. Lazarus. "2-Aminoamides and pseudopeptides carrying an amino group common to two residues." In Peptides 1992, 185–86. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1470-7_70.

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Pedersen, Søren W., Christopher J. Armishaw, and Kristian Strømgaard. "Synthesis of Peptides Using Tert-Butyloxycarbonyl (Boc) as the α-Amino Protection Group." In Methods in Molecular Biology, 65–80. Totowa, NJ: Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-544-6_4.

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Tamaki, Makoto, Sadatoshi Akabori, and Ichiro Muramatsu. "Synthesis of gramicidin S without protection of δ-amino group of ornithine residue." In Peptide Chemistry 1992, 162–65. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1474-5_48.

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Conference papers on the topic "Amino group"

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Dzimbova, Tatiana A., Tamara I. Pajpanova, and Evgeny V. Golovinsky. "Synthesis of some sulfoguanidino group-containing amino acids." In VIIIth Conference Biologically Active Peptides. Prague: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 2003. http://dx.doi.org/10.1135/css200306012.

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Tian, Teng fei, Gui zhong Liu, Xian hui Meng, Xiao qian Tan, and Yong liang Liu. "Study of R-group positively charged amino acids' UV." In International Conference on Photonics and Image in Agriculture Engineering (PIAGENG 2009). SPIE, 2009. http://dx.doi.org/10.1117/12.836869.

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Bower, John F. "Directing Group Enhanced Carbonylative Ring Expansions of Amino Substituted Cyclopropanes." In 15th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-young4.

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Da-Jeng Yao and Yong-Ruei Yang. "Bio-chemical sensor using polyaniline nanofibers for sensing amino-group type of gas." In 2005 IEEE International Conference on Robotics and Biomimetics - ROBIO. IEEE, 2005. http://dx.doi.org/10.1109/robio.2005.246365.

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Boroznina, N. P., A. A. Grechko, I. V. Zaporotskova, S. V. Boroznin, and P. A. Zaporotskov. "Study of carbon dioxide interaction with modified functional amino group of carbon nanotubes." In THE 2ND INTERNATIONAL CONFERENCE ON PHYSICAL INSTRUMENTATION AND ADVANCED MATERIALS 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0033060.

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Baghishov, Ilgar, Gayan A. Abeykoon, Mingyuan Wang, Francisco J. Argüelles Vivas, and Ryosuke Okuno. "Glycine for Enhanced Water Imbibition in Carbonate Reservoirs – What is the Role of Amino Group?" In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206294-ms.

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Abstract Previous studies indicated the efficacy of the simplest amino acid, glycine, as an aqueous additive for enhanced water imbibition in carbonate reservoirs. The objective of this research was to investigate the importance of the amino group of glycine in its enhanced water imbibition. To this end, glycine was compared with two carboxylates (acetate and formate) with/without adding hydrogen chloride (HCl) for adjusting the solution pH. Note that the amino group is the only difference between glycine and acetate. Contact-angle experiments on calcite were carried out at 347 K and atmospheric pressure with 68000-ppm reservoir brine (RB), and 4 different concentrations of glycine, acetate, and formate solutions in RB. To test the hypothesis that calcite dissolution is one of the main mechanisms in wettability alteration by glycine, we performed another set of contact angle experiments by adding HCl to brine, acetate, and formate solutions. HCl was added to match the pH of the glycine solution at the same concentration. We also performed imbibition tests with Texas Cream Limestone cores at 347 K with brine, glycine, acetate, and formate solutions (with and without HCl) in RB at 5.0 wt%. Contact-angle results indicated that glycine changed calcite's wettability from oil-wet to water-wet (45°). However, acetate solution was not able to change the wettability to water-wet; and formate moderately decreased the contact angle to 80°. The pH level increased from 6.1 to 7.6 after the contact angle experiment in glycine solution, indicating the consumption of hydrogen ions due to calcite dissolution. The levels of pH in formate and acetate solutions, however, decreased from 8.4 to 7.8. The acidity of glycine above its isoelectric point arises from the deprotonation of the carboxyl group. Imbibition tests with carbonate cores supported the observations from the contact-angle experiments. The oil recovery was 31% for glycine solution, 20% for RB, 21% for formate solution, and 19% for acetate solution. This re-confirmed the effectiveness of glycine as an additive to improve the oil recovery from carbonates. An additional set of imbibition tests revealed that acetate at the pH reduced to the same level as glycine was still not able to recover as much oil as glycine. This showed that glycine recovered oil not only because of the calcite dissolution and the carboxyl group, but also because of the amino group. It is hypothesized that the amino group with its electron donor ability creates a chelation effect that makes glycine entropically more favorable to get attached to the calcite surface than acetate. Another important result is that the formate solution at an adjusted pH resulted in a greater oil recovery than RB or RB at the same pH. This indicates that there is an optimal pH for the carboxyl group to be effective in wettability alteration as also indicated by the pH change during the contact-angle experiment.

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Abbo, Hanna, Marvin Piet, Salam Titinchi, Wilhelm Schwieger, and Olav Bolland. "Amino-Functionalized Silica Materials for Carbon Dioxide Capture." In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49743.

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Amine-functionalized mesoporous silica has attracted much attention as a promising chemical sorbent for capturing carbon dioxide. It has the combination of several features viz., high adsorption capacity, high selectivity toward CO2, fast kinetics, mild conditions for desorption and should be stable under operating conditions. In this study, a chemical grafting route has been developed to synthesize mesoporous adsorbents with amines functionalization for CO2 capture. The initial silylation step was achieved by grafting of different silane linkers (3-aminopropyl)-trimethoxysilane (APS) and 3-chloropropyl)-trimethoxysilane (CPS) via direct condensation and hydrolysis reaction. After silylation the CPS-supports was reacted with tris(2-aminoethyl)amine (TREN) to introduce the amine group to increase the adsorptive capabilities for these sorbents. The synthesized sorbents were characterized by N2 adsorption/desorption, XRD, FTIR and HR-SEM. The adsorption capacities of the modified solid sorbents show a significant enhancement in their adsorption capacity by 3–4 times higher than that of the parent materials which indicate the affirmative impact of amines for CO2 adsorption after grafting.

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Zapata-Romero, Gilberto A., Markus Doerr, and Martha C. Daza. "Lipase-catalyzed O-acylation of (RS)-propranolol is determined by the acyl group length." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol2020130.

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We employed a computational modeling approach to study the Michaelis complexes of (R)- and (S)-propranolol with serine-acylated Candida antarctica lipase B using four acyl groups: ethanoyl, butanoyl, octanoyl and hexadecanoyl. Our methodology involves sampling Michaelis complex conformations, first through ensemble docking using consensus scoring, and second by molecular dynamics simulations employing a quantum mechanics/molecular mechanics approach. The conformations are then categorized into two classes of near attack conformations, according to the distance of (a) the amino and (b) the hydroxy group of propranolol to the catalytic residues. The relative populations of these two classes of conformations was found to be consistent with the experimentally-observed exclusive chemoselectivity toward O-acylation with ethanoyl. Furthermore, we predict that increasing the length of the hydrocarbon chain of the acyl group will cause O-acylation to be unfavorable.

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Bian, Dakai, Jason C. Tsui, Robert R. Kydd, D. J. Shim, Marshall Jones, and Y. Lawrence Yao. "Interlaminar Toughening of Fiber Reinforced Polymers by Synergistic Modification of Resin and Fiber." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6528.

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The synergistic effect of combining different modification methods was investigated in this study to improve the interlaminar toughness and delamination resistance of fiber reinforced polymers (FRP). Epoxy-compatible polysulfone (PSU) was end-capped with epoxide group through functionalization, and the fiber surface was chemically grafted with amino functional group to form a micron-size rough surface. Consequently, the long chain of PSU entangles into crosslinked thermoset epoxy network, additionally, epoxide group on PSU further improves the bonding through chemical connection to the epoxy network and amino group on fiber surface. The combined modification methods can generate both strong physical and chemical bonding. The feasibility of using this method in vacuum assisted resin transfer molding was determined by rheometer. The impact of formed chemical bonds on the crosslinking density was examined through glass transition temperatures. The chemical modifications were characterized by Raman Spectroscopy to determine the chemical structures. Synergistic effect of the modification was established by Mode I and Mode II fracture tests which quantify the improvement on composites delamination resistance and toughness. The mechanism of synergy was explained based on the fracture mode and interaction between the modification methods. Finally, Numerical simulation was used to compare samples with and without modifications. The experiment results showed that synergy is achieved at low concentration of modified PSU because the formed chemical bonds compensate the effect of low crosslinking density and interact with the modified fiber.

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Dinh Thanh, Nguyen, Do Son Hai, Vu Thi Tuyet Thuy, Do Tien Tung, Cao Thi Le, and Hoang Thi Kim Van. "CATALYSIS INVESTIGATION FOR SYNTHESIS OF 2-AMINO-4H-PYRAN-3-CARBONITRILES CONTAINING PROPARGYL GROUP." In The 21st International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/ecsoc-21-04769.

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Reports on the topic "Amino group"

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Nokuri, Samuel S., Jennifer Dean, and Marquita N. Price. The AMIGO Clinical Study: Attrition Rates Among Military Beneficiaries Undergoing Intensive Group Outpatient Pre-Diabetes Care. Fort Belvoir, VA: Defense Technical Information Center, November 2013. http://dx.doi.org/10.21236/ada606936.

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