Synthesis and Characterization of Hydrophobic, Organically-Soluble Gold Nanocrystals Functionalized with Primary Amines

Langmuir ◽  
1996 ◽  
Vol 12 (20) ◽  
pp. 4723-4730 ◽  
Author(s):  
Daniel V. Leff ◽  
Lutz Brandt ◽  
James R. Heath
Keyword(s):  
Primary Amines ◽  
Synthesis And Characterization ◽  
Gold Nanocrystals

scholarly journals Synthesis and Characterization of New Mannich Bases Derived from 7-hydroxy-4-methyl Coumarin

2016 ◽  
Vol 13 (2) ◽  
pp. 235-243
Author(s):  
Baghdad Science Journal
Keyword(s):  
Spectral Analysis ◽  
Mass Spectrum ◽  
Physical Properties ◽  
Benzene Ring ◽  
Sodium Acetate ◽  
Mannich Bases ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Coumarin Derivatives

Coumarin is a natural substance isolated from different plants. It belonges to a group of benzobyrones which consists of a benzene ring joined to a pyrone nucleus. In the present research, a new series of coumarin derivatives were formed. Compound (1) (7-hydroxy-4-methyl Coumarin) was converted into 4-methylquinolin-2(H) derivative (2) by reaction with acetamide, and then reaction of (2) with thiosemicarbazide in ethanol leads to the synthesize of hydrazincarbothioamide derivative (3).The reaction of (3) with ethylchloroacetate in presence of sodium acetate leads to closure ring to get [(1-(5-oxo-2-thioxoimidazolidin-1-ylimino) ethyl)]quinolin-2(1H)-one (4). Mannich bases were prepared through the reaction of (4) with primary amines to form compounds (5-6). New coumarin derivatives were characterized by their physical properties and various spectral analysis like: FTIR, 1HNMR spectra and GC-Mass spectrum for some of them.

scholarly journals Synthesis and Characterization of the Novel Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-Carboxy Anhydride. Synthesis of Well-Defined Linear and Branched Polypeptides

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2819
Author(s):  
Varvara Athanasiou ◽  
Pandora Thimi ◽  
Melina Liakopoulou ◽  
Foteini Arfara ◽  
Dimitra Stavroulaki ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Vacuum ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Stimuli Responsive ◽  
Linear Poly ◽  
Compositional Homogeneity ◽  
High Degree

The synthesis of well-defined polypeptides exhibiting complex macromolecular architectures requires the use of monomers that can be orthogonally deprotected, containing primary amines that will be used as the initiator for the Ring Opening Polymerization (ROP) of N-carboxy anhydrides. The synthesis and characterization of the novel monomer Nε-9-Fluorenylmethoxycarbonyl-l-Lysine N-carboxy anhydride (Nε-Fmoc-l-Lysine NCA), as well as the novel linear Poly(Nε-Fmoc-l-Lys)n homopolypeptide and Poly(l-Lysine)78–block–[Poly(l-Lysine)10–graft–Poly(l-Histidine)15] block-graft copolypeptide, are presented. The synthesis of the graft copolypeptide was conducted via ROP of the Nε-Boc-l-Lysine NCA while using n-hexylamine as the initiator, followed by the polymerization of Nε-Fmoc-l-Lysine NCA. The last block was selectively deprotected under basic conditions, and the resulting ε-amines were used as the initiating species for the ROP of Nim-Trityl-l-Histidine NCA. Finally, the Boc- and Trt- groups were deprotected by TFA. High Vacuum Techniques were applied to achieve the conditions that are required for the synthesis of well-defined polypeptides. The molecular characterization indicated that the polypeptides exhibited high degree of molecular and compositional homogeneity. Finally, Dynamic Light Scattering, ζ-potential, and Circular Dichroism measurements were used in order to investigate the ability of the polypeptide to self-assemble in different conditions. This monomer opens avenues for the synthesis of polypeptides with complex macromolecular architectures that can define the aggregation behavior, and, therefore, can lead to the synthesis of “smart” stimuli-responsive nanocarriers for controlled drug delivery applications.

Synthesis and characterization of a methacrylic polyelectrolyte capable of reacting with primary amines at room temperature in water

Polymer ◽  
2009 ◽  
Vol 50 (11) ◽  
pp. 2335-2340 ◽  
Author(s):  
Julien Barruet ◽  
Romain Molle ◽  
Julien Babinot ◽  
Jacques Penelle
Keyword(s):  
Room Temperature ◽  
Primary Amines ◽  
Synthesis And Characterization

Synthesis and Characterization of Hyperbranched Poly(ester-amide)s from Commercially Available Dicarboxylic Acids and Multihydroxyl Primary Amines

2006 ◽  
Vol 39 (23) ◽  
pp. 7889-7899 ◽  
Author(s):  
Xiuru Li ◽  
Xianfeng Lu ◽  
Ying Lin ◽  
Jie Zhan ◽  
Yuesheng Li ◽  
...  
Keyword(s):  
Dicarboxylic Acids ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Hyperbranched Poly

scholarly journals Synthesis and characterization of some N-substituted amides of salicylic acid

2003 ◽  
pp. 5-10 ◽  
Author(s):  
Xenia Lupea ◽  
Mirabela Padure
Keyword(s):  
Salicylic Acid ◽  
Organic Solvent ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Direct Reaction ◽  
Physical Methods

The synthesis of some N-substituted aromatic amides in the salicylic acid series was achieved, by direct reaction between primary amines and salicylic acid in inert organic solvent, in the presence of PCl3. The compounds that were obtained, partially not described in literature, were characterized by chemical-physical methods.

scholarly journals Synthesis of New bis 1-Substituted 1H-Tetrazoles via Efficient Heterocyclizations from Symmetric Dianilines, Methyl Orthoester, and Sodium Azide

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 26
Author(s):  
Julio C. Flores-Reyes ◽  
Roberto E. Blanco-Carapia ◽  
Alfredo López-Olvera ◽  
Perla Islas-Jácome ◽  
Yizrell Medina-Martínez ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Sodium Azide ◽  
Primary Amine ◽  
Single Step ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Synthetic Strategy ◽  
Group Reduction ◽  
Nitro Group Reduction

The synthesis and characterization of three new bis 1-substituted 1H-tetrazoles are described. Two products were synthesized in a single step via a direct heterocyclization of primary amines, methyl orthoester (trymethyl orthoformate), and sodium azide in 30% and 91% yields, respectively. Besides, another one was prepared via a three-step synthetic strategy: SNAr (32%), nitro-group reduction (66%), and primary amine heterocyclization (83%), yielding 18%, overall. The aim behind the synthesis of new tetrazole-containing products is to construct novel MOF-like structures to evaluate their gas capture properties (CO2, CO, and SO2) under relative humidity conditions.

scholarly journals Synthesis and characterization of a linker for primary amines used in the solid phase organic synthesis of spermidine

2011 ◽  
Vol 22 (1) ◽  
pp. 86-91
Author(s):  
Emerson T. da Silva ◽  
Rosane A. S. San Gil ◽  
Stefano Caldarelli ◽  
Fabio Ziarelli ◽  
Edson L. S. Lima
Keyword(s):  
Organic Synthesis ◽  
Solid Phase ◽  
Primary Amines ◽  
Synthesis And Characterization ◽  
Solid Phase Organic Synthesis
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