A New Thermo-, pH-, and CO2-Responsive Homopolymer of Poly[N-[2-(diethylamino)ethyl]acrylamide]: Is the Diethylamino Group Underestimated?

2015 ◽  
Vol 49 (1) ◽  
pp. 162-171 ◽  
Author(s):  
Zefeng Song ◽  
Ke Wang ◽  
Chengqiang Gao ◽  
Shuang Wang ◽  
Wangqing Zhang
Keyword(s):  
Diethylamino Group

Modification of silica gel with diethylamino group by novel reaction and its characterization

1993 ◽  
Vol 271 (5) ◽  
pp. 486-493 ◽  
Author(s):  
T. Suhara ◽  
H. Kutsuna ◽  
H. Fukui ◽  
M. Yamaguchi
Keyword(s):  
Silica Gel ◽  
Diethylamino Group

Hydrolytic stability and pesticidal activity of N'-methyl- and N'-arylcarbamates of 3-(N,N-diethylamino)phenol

1983 ◽  
Vol 48 (5) ◽  
pp. 1440-1446
Author(s):  
Alexandr Čegan ◽  
Miroslav Večeřa
Keyword(s):  
Effective Dose ◽  
Hydrolytic Stability ◽  
Aqueous Media ◽  
Herbicidal Activity ◽  
Hydrolysis Rate ◽  
Reaction Constant ◽  
Hydrolysis Of ◽  
Diethylamino Group

Twelve carbamates based on 3-(N,N-diethylamino)phenol have been prepared, and their hydrolysis rate in aqueous media of pH 7-12.5, their inhibition of butyrylcholin esterase and acetylcholin esterase and herbicidal activity have been studied. The hydrolysis of the compounds studied in the mentioned media proceeds by the ElcB mechanism, the value of reaction constant at 25 °C is ρ = 1.12 ± 0.08. The hydrolysis rate in the pH region 7-8.5 is affected by protonation of the 3-N,N-diethylamino group. The compounds I-XII inhibit butyrylcholin esterase (pI50 value 5.1-6.5). Acetylcholin esterase is inhibited most efficiently by the carbamates XII (pI50 = 8.3), XI (pI50 = 6.25) and VII (pI50 = 5.07). Herbicidal effects are small, the effective dose being above 5 kg/ha.

Design and Synthesis of a Luminescent Cyclometalated Iridium(III) Complex Having N,N-Diethylamino Group that Stains Acidic Intracellular Organelles and Induces Cell Death by Photoirradiation

2012 ◽  
Vol 51 (23) ◽  
pp. 12697-12706 ◽  
Author(s):  
Shinsuke Moromizato ◽  
Yosuke Hisamatsu ◽  
Toshihiro Suzuki ◽  
Yasuki Matsuo ◽  
Ryo Abe ◽  
...  
Keyword(s):  
Cell Death ◽  
Design And Synthesis ◽  
Intracellular Organelles ◽  
Diethylamino Group

scholarly journals Synthesis and crystal structure of allyl 7-(diethylamino)-2-oxo-2H-chromene-3-carboxylate

2021 ◽  
Vol 77 (4) ◽  
pp. 331-334
Author(s):  
Vanessa Nowatschin ◽  
Christian Näther ◽  
Ulrich Lüning
Keyword(s):  
Title Compound ◽  
Allyl Bromide ◽  
Carboxyl Group ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Compound C ◽  
Pure Phase ◽  
Flash Column Chromatography ◽  
Diethylamino Group

The title compound, C17H19NO4, was synthesized by the reaction of 7-(diethylamino)-2-oxo-2H-chromene-3-carboxylic acid with allyl bromide and purified by flash column chromatography on silica gel. Crystals suitable for single-crystal X-ray diffraction were obtained by recrystallization from acetone. The aromatic core of the molecule is not planar with the diethylamino group and with the carboxyl group that are rotated out of the 2-oxo-2H-chromene plane by 6.7 (2)° and 11.4 (2)°. The NC2 unit of the diethylamino group is planar with an angle sum close to 360°. Intermolecular Car—H...Ocarbonyl interactions lead to the formation of chains parallel to the b axis. X-ray powder diffraction analysis proves that the title compound was obtained as a pure phase.

scholarly journals 4,6-Di-tert-butyl-2-({[4-(diethylamino)phenyl]imino}methyl)phenol

IUCrData ◽  
2017 ◽  
Vol 2 (4) ◽  
Author(s):  
C. Vidya Rani ◽  
L. Mitu ◽  
G. Chakkaravarthi ◽  
G. Rajagopal
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bond ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Minor Components ◽  
Aromatic Rings ◽  
Π Interactions ◽  
Compound C ◽  
Diethylamino Group

The title compound, C25H36N2O, adopts anEconformation about the C=N bond. The dihedral angle between the aromatic rings is 35.6 (6)°. The molecular structure is stabilized by an O—H...N hydrogen bond, which forms anS(6) loop, and weak C—H...O contacts. Weak intermolecular C—H...π interactions are observed in the crystal packing. The diethylamino group has rotational disorder with site occupancies of 0.85 (2) and 0.15 (2) for the major and minor components, respectively. The structure was refined as a three-component twin.

Fluorinated 3-diethylaminopropenoates and their reactions

1981 ◽  
Vol 46 (6) ◽  
pp. 1389-1396 ◽  
Author(s):  
Jiří Svoboda ◽  
Oldřich Paleta ◽  
František Liška ◽  
Václav Dědek
Keyword(s):  
Thermal Decomposition ◽  
Point Of View ◽  
Hydroxyl Group ◽  
Chlorine Atoms ◽  
Vinylic Substitution ◽  
Diethylamino Group ◽  
Fluoro Derivatives

The reaction of diethylamine with methyl trifluoropropenoate (I), methyl 2-chloro-3,3-difluoropropenoate (II), methyl 3,3-difluoropropenoate III) and methyl 3-chloro-2,3-difluoropropenoate (IV) affords halogenated 3-diethylaminopropenoates V-VII via the vinylic substitution of fluorine or chlorine atoms. When hydrolyzed the latter give methyl N,N-diethylcarbamoylacetates X-XII. On addition of 1-butanol and 2,2,3,3-tetrafluoropropanol to aminopropenoates V-VII fluorinated 3-alkoxy-3-diethylaminopropenoates XIII-XVI were prepared which when hydrolyzed eliminate the diethylamino group under formation of alkyl methylpropanedioates XX to XXIII. Heating of aminoethers XIII-XVI at 150 °C gives 1-fluorobutane or 1,1,2,2,3-pentafluoropropane, respectively. These fluoro derivatives are also formed on heating of the mentioned alcohols with 3-diethylaminopropenoates V-VII. During the thermal decomposition of methyl 2-chloro-3-diethylamino-3-fluoro-3-(2,2,3,3-tetrafluoropropoxy)propanoate (XV) 3-chloro-1,1,2,2-tetrafluoropropane was formed as a by-product. The substitution of the hydroxyl group with fluorine is discussed from the point of view of preparative application.

scholarly journals Highly selective deethylation of rhodamine B: Adsorption and photooxidation pathways of the dye on theTiO2/SiO2composite photocatalyst

2003 ◽  
Vol 5 (4) ◽  
pp. 209-217 ◽  
Author(s):  
Feng Chen ◽  
Jincai Zhao ◽  
Hisao Hidaka
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Active Oxygen Species ◽  
Aqueous Dispersion ◽  
Surface Characteristics ◽  
Bulk Solution ◽  
Experimental Conditions ◽  
Diethylamino Group ◽  
Positively Charged

The photocatalytic degradation of Rhodamine B (RhB) withTiO2andTiO2/SiO2in the aqueous dispersion was investigated under both the visible light (λ>480 nm) and UV irradiation. The detailed photocatalytic oxidative process of RhB under these different conditions was revealed by measurement of the isoelectric points of the catalysts, UV-VIS spectra, HPLC and LC-MS. RhB adsorbs on the surface ofTiO2/SiO2particles by the positively-charged diethylamino group while, in the case of netTiO2, it adsorbs through the negatively-charged carboxyl group under the experimental conditions (pH∼4.3). In the RhB-TiO2/SiO2system, RhB firstly underwent a highly selective stepwise deethylation process before the destruction of the chromophore structure under visible light irradiation. The average yield of the every deethylation step was higher than 86%. It is confirmed that visible light-induced photocatalytic degradation of dye proceeds on the surface of catalysts rather than in the bulk solution and active oxygen species preferentially attack the molecular portion that connects directly to the surface of catalysts. This work provides a possibility for the modification of the surface characteristics ofTiO2to adsorb effectively the special colored organic molecules in selective mode for selective modification or deeply extent photooxidation.

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