Chlorine/UV treatment of anatoxin-a by activation of the secondary amine functional group

2020 ◽  
Vol 6 (5) ◽  
pp. 1412-1420
Author(s):  
Moshan Chen ◽  
Ernest R. Blatchley
Keyword(s):  
Secondary Amine ◽  
Treatment Process ◽  
Functional Group ◽  
Amine Group ◽  
Uv Treatment ◽  
Uv Photodegradation ◽  
Amine Functional Group

A UV treatment process with prechlorination promotes the direct UV photodegradation of anatoxin-a by forming an N–Cl bond on the amine group.

scholarly journals Versatile Synthetic Route for Resveratrol Modification via Amine Functionalization

2019 ◽  
Vol 14 (9) ◽  
pp. 1934578X1987621
Author(s):  
Masayoshi Yanagi ◽  
Noriyuki Uchida ◽  
Hiroki Hamada
Keyword(s):  
Rhodamine B ◽  
Trifluoroacetic Acid ◽  
Primary Amine ◽  
Functional Group ◽  
Amine Group ◽  
Amine Functionalization ◽  
Synthetic Route ◽  
Amine Functional Group ◽  
Ether Synthesis ◽  
Williamson Ether Synthesis

Resveratrol derivatives containing a primary amine functional group were synthesized by an introduction of N-Boc-bromoethylamine to resveratrol using Williamson ether synthesis and subsequent deprotection of the Boc group with trifluoroacetic acid. After conjugation of fluorescent NBD-F or rhodamine B with isothiocyanate (Rhd B-ITC) using the amine group, resveratrols modified with NBD or Rhd B (Resveratrol-NBD and Resveratrol-Rhd B, respectively) were successfully obtained.

Infrared spectra of the interactions of aniline and porous glass surfaces

1969 ◽  
Vol 47 (8) ◽  
pp. 1281-1287 ◽  
Author(s):  
M. J. D. Low ◽  
V. V. Subba Rao
Keyword(s):  
Nitrogen Atom ◽  
Aromatic Ring ◽  
Secondary Amine ◽  
Infrared Spectra ◽  
Porous Glass ◽  
Weak Interactions ◽  
Amine Group ◽  
Oh Groups ◽  
Glass Surfaces ◽  
Adsorption And Dissociation

Infrared spectra were recorded of aniline sorbed on highly dehydroxylated, deuterated, and on fluoridated porous glass as well as on pure and boria-impregnated silica. The results suggest that two types of weak interactions involving the surface SiOH and B—OH groups occurred; the nitrogen atom of the amine was hydrogen bonded to surface OH and there was an interaction between OH groups and the π system of the aromatic ring. Some aniline chemisorbed on surface boron via the nitrogen atom of the amine group. Some aniline chemisorbed dissociatively to form secondary amine structures bonded through the nitrogen to surface boron atoms and new B—OH groups formed. Surface boron impurity acted as an adsorption and dissociation center.

ChemInform Abstract: Novel Syntheses of Monofunctionalized Triaza-Crowns and Cyclams with a Secondary Amine Group on a Side Chain.

ChemInform ◽  
1990 ◽  
Vol 21 (4) ◽  
Author(s):  
K. E. KRAKOWIAK ◽  
J. S. BRADSHAW ◽  
N. K. DALLEY ◽  
W. JIANG ◽  
R. M. IZATT
Keyword(s):  
Secondary Amine ◽  
Side Chain ◽  
Amine Group ◽  
Secondary Amine Group

scholarly journals Investigation of the Binding Affinity of a Broad Array of l-Fucosides with Six Fucose-Specific Lectins of Bacterial and Fungal Origin

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2262 ◽  
Author(s):  
Son Thai Le ◽  
Lenka Malinovska ◽  
Michaela Vašková ◽  
Erika Mező ◽  
Viktor Kelemen ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Functional Group ◽  
Click Reaction ◽  
Inhibition Assay ◽  
Promising Candidate ◽  
Hemagglutination Inhibition Assay ◽  
Broad Array ◽  
Amine Functional Group ◽  
Potential Inhibitors ◽  
Better Than

Series of multivalent α-l-fucoside containing glycoclusters and variously decorated l-fucosides were synthesized to find potential inhibitors of fucose-specific lectins and study the structure-binding affinity relationships. Tri- and tetravalent fucoclusters were built using copper-mediated azide-alkyne click chemistry. Series of fucoside monomers and dimers were synthesized using various methods, namely glycosylation, an azide-alkyne click reaction, photoinduced thiol-en addition, and sulfation. The interactions between compounds with six fucolectins of bacterial or fungal origin were tested using a hemagglutination inhibition assay. As a result, a tetravalent, α-l-fucose presenting glycocluster showed to be a ligand that was orders of magnitude better than a simple monosaccharide for tested lectins in most cases, which can nominate it as a universal ligand for studied lectins. This compound was also able to inhibit the adhesion of Pseudomonas aeruginosa cells to human epithelial bronchial cells. A trivalent fucocluster with a protected amine functional group also seems to be a promising candidate for designing glycoconjugates and chimeras.

Novel syntheses of monofunctionalized triaza-crowns and cyclams with a secondary amine group on a side chain

1989 ◽  
Vol 30 (22) ◽  
pp. 2897-2900 ◽  
Author(s):  
Krzysztof E. Krakowiak ◽  
Jerald S. Bradshaw ◽  
N.Kent Dalley ◽  
Weiming Jiang ◽  
Reed M. Izatt
Keyword(s):  
Secondary Amine ◽  
Side Chain ◽  
Amine Group ◽  
Secondary Amine Group

scholarly journals Effect of O3 Dose on the O3/UV Treatment Process for the Removal of Pharmaceuticals and Personal Care Products in Secondary Effluent

2019 ◽  
Vol 3 (2) ◽  
pp. 53 ◽  
Author(s):  
N. Evelin Paucar ◽  
IIho Kim ◽  
Hiroaki Tanaka ◽  
Chikashi Sato
Keyword(s):  
Municipal Wastewater ◽  
Treatment Process ◽  
Limit Of Detection ◽  
Personal Care Products ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Secondary Effluent ◽  
Municipal Wastewater Treatment ◽  
Personal Care ◽  
Uv Treatment

A municipal wastewater treatment plant (WWTP) is a melting pot of numerous pharmaceuticals and personal care products (PPCPs) together with many other substances. The removal of PPCPs using advanced oxidation processes within a WWTP is one way to reduce the amount of PPCPs that potentially enter an aquatic environment. The aim of this study was to examine the effectiveness of the ozone (O3)/UV treatment process, especially, the effects of O3 dose and reaction time, on the removal of PPCPs in the secondary effluent of a WWTP. Experiments were conducted using a pilot-scale treatment process that consisted of two flow-through reactors connected in series. Each reactor was equipped with three 65 W lamps (UV65W). The experimental variables were ozone dosage (1, 2, 3, 4, and 6 mg L−1) and hydraulic retention time (HRT; 5 and 10 min). On the basis of the PPCP concentrations after O3/UV65W treatment and their limit of detection (LOD), 38 PPCPs detected in the secondary effluent were classified into 5 groups ranging from the category of “sensitive” to O3/UV65W or “unstable” in the O3/UV65W process to the category of “insensitive” to O3/UV65W or “very stable” in the O3/UV65W process.

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