Catalysis-chemistry

Mori, Sadao published the artcileThin-layer chromatography of diamines, dicarboxylic acids, and ¦Ø-amino acids, Name: Propane-1,3-diamine dihydrochloride, the publication is Journal of Chromatography (1970), 47(2), 224-31, database is CAplus.

A method, which involves thin-layer chromatog. and densitometry, was developed for the quant. and qual. determination of the diamine dihydrochlorides, dicarboxylic acids, and ¦Ø-amino acid hydrochlorides recovered from acid hydrolyzed copolyamides prepared from diamine-diacid and (or) ¦Ø-amino acids (or their lactams). Two different solvent systems consisting of PhOH-BuOH-HCO2H-H2O and PhOH-HCO2H-H2O were used. The qual. anal. of the 3 homologous series was attained on the same chromatogram. For quant. determination the method has an average relative error of ¡À5%. A linear relation between the R’m values [R’m = log (1/1.1 Rf -1 )] and the solute C numbers was observed. The deviation from linearity for the longer chain compounds might be caused by a gradient effect. The linearity between Rf values and the number of C atoms depended upon the exptl. conditions.

Journal of Chromatography published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Name: Propane-1,3-diamine dihydrochloride.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sueki, Shunsuke published the artcileSynthesis of 1,4-Dihydropyridines and Their Fluorescence Properties, Application of Propane-1,3-diamine dihydrochloride, the publication is European Journal of Organic Chemistry (2014), 2014(24), 5281-5301, database is CAplus.

We have successfully synthesized 3,4,5-substituted 1,4-dihydropyridines (1,4-DHPs) from amine hydrochloride salts, aldehydes, and acetals in good yields without the addition of a catalyst. The synthesized 1,4-DHPs exhibit various wavelengths of fluorescence, which could be tuned by changing the substituents at the 3- and 5-positions of the 1,4-DHPs.

European Journal of Organic Chemistry published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C10H11NO4, Application of Propane-1,3-diamine dihydrochloride.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Usui, Shinnosuke published the artcileSeparation of quartz and hematite by reverse flotation using dodecylamine. II. Effect of particle size on reverse flotation of quartz from hematite using dodecylamine in alkaline media, SDS of cas: 2016-56-0, the publication is Nippon Kogyo Kaishi (1983), 99(1149), 995-8, database is CAplus.

Reverse flotation of a mixture of powd. quartz and hematite was carried out in the presence of dodecylamine?acetate??[2016-56-0] in alk. solution of pH 10, where both quartz and hematite are neg. charged. The separation was complete (except when hematite particle size was <10¦Ì) owing to concurrent flotation of hematite or ineffective flotation of quartz caused by preferential adsorption of dodecylamine acetate on hematite.

Nippon Kogyo Kaishi published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C48H47FeP, SDS of cas: 2016-56-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Usui, Shinnosuke published the artcileSeparation of quartz and hematite by reverse flotation using dodecylamine. I. Effect of particle size on reverse flotation of quartz from hematite using dodecylamine in acidic media, SDS of cas: 2016-56-0, the publication is Nippon Kogyo Kaishi (1983), 99(1148), 915-20, database is CAplus.

Separation by reverse flotation of a mixture of powd. quartz and hematite was carried out in the presence of docecylamine?acetate??[2016-56-0] in acidic solution of pH 5, where quartz is neg. and hematite is pos. charged. The separation was complete except when hematite particle size was 10¦Ì, owing to coagulation of quartz and hematite or slime coating of hematite on quartz. A critical particle size of hematite likely to cause the slime coating was 0.3¦Ì.

Nippon Kogyo Kaishi published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H10O4, SDS of cas: 2016-56-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Notake, Takashi published the artcileCharacterization of all second-order nonlinear-optical coefficients of organic N-benzyl-2-methyl-4-nitroaniline crystal, Product Details of C14H14N2O2, the publication is Scientific Reports (2019), 9(1), 1-8, database is CAplus and MEDLINE.

Full elements of second-order nonlinear optical (NLO) tensor can be completely characterized for an organic NLO crystal for the first time. As-grown bulk N-benzyl-2-methyl-4-nitroaniline (BNA) crystal was processed to expose (100) and (010) crystal orientations with fine optical surfaces by using precision lathe and diamond blade. Then, every five nonvanishing second-order NLO coefficient of BNA can be determined quant. using the precisely processed crystals based on 1st-kind Maker fringe measurements. Our method makes it possible to clarify uncertain NLO property of any organic materials and to accelerate application study via precise device fabrications even for fragile organic materials.

Scientific Reports published new progress about 201157-13-3. 201157-13-3 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is N-Benzyl-2-methyl-4-nitroaniline, and the molecular formula is C14H14N2O2, Product Details of C14H14N2O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Tsunekawa, Masami published the artcileInterfacial characteristics of barite, calcite, and scheelite in aqueous solution, and their flotation, Category: catalysis-chemistry, the publication is Nippon Kogyo Kaishi (1981), 97(1118), 251-6, database is CAplus.

A surface chem. study was made on the floatability of barite??[13462-86-7] and calcite??[13397-26-7] and scheelite??[14913-80-5] with dodecyl?ammonium?acetate (DAA) [2016-56-0] and sodium?dodecyl?sulfate (SDS) [151-21-3]. Floatability of barite changed when pH deviated from the equivalence point, EP (pH = 7.6), due to the surface hydrolysis. EP compared well with the isoelec. point. Barite was well floated with SDS, irresp. of pH, because of the chem. adsorption of SDS. The flotation of calcite changed considerably with pH, due to the change in the concentration of chem. species in the aqueous phase with pH.

Nippon Kogyo Kaishi published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C12H6F6O6S2, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Hirajima, Tsuyoshi published the artcileQuantitative determination of fatty acid salts and alkyl amine salts by infrared analysis method, COA of Formula: C14H31NO2, the publication is Nippon Kogyo Kaishi (1980), 96(1114), 897-900, database is CAplus.

Fatty acid salts, Na oleate and Na palmitate (1-7) ¡Á 10^-5M, and alkyl amine salts, dodecylammonium acetate (I) (1-7) ¡Á 10^-5M, in aqueous solutions (used as collectors in nonsulfide mineral flotation) were determined by IR absorption spectrometry at 3.4-3.5 ¦Ìm, after extraction with CCl₄ at pH <2.9 and >10.6 for Na oleate and palmitate and pH <1.5-2.5 and >13.0-13.5 for I.

Nippon Kogyo Kaishi published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, COA of Formula: C14H31NO2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Yamamoto, Yoshihiko published the artcileSynthesis of ¦Ã-trifluoromethyl tetronate derivatives from squarates, Quality Control of 1206-46-8, the publication is Heterocycles (2017), 95(1), 525-539, database is CAplus.

Squarates and semisquarates were treated with TMSCF₃ in the presence of a catalytic amount of AcONa in DMF at room temperature to afford 4-trifluoromethyl-4-hydroxycyclobutenones. Subsequent oxidative ring expansion of these products was performed using Pb(OAc)₄ in the presence of MS 4A in 1,2-dichloroethane at 50¡ã to afford ¦Ã-trifluoromethyl tetronate derivatives

Heterocycles published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C6H20Cl2N4, Quality Control of 1206-46-8.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Hyodo, Yuki published the artcileAssemblies of 1,4-Bis(diarylamino)naphthalenes and Aromatic Amphiphiles: Highly Reducing Photoredox Catalysis in Water, COA of Formula: C8H8O2, the publication is Synlett (2022), 33(12), 1184-1188, database is CAplus.

Host-guest assemblies of a designed 1,4-bis(diarylamino)naphthalene and V-shaped aromatic amphiphiles consisting of two pentamethylbenzene moieties bridged by an m-phenylene unit bearing two hydrophilic side chains emerged as highly reducing photoredox catalysis systems in water. An efficient demethoxylative hydrogen transfer of Weinreb amides had been developed. The present supramol. strategy permitted facile tuning of visible-light photoredox catalysis in water.

Synlett published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, COA of Formula: C8H8O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Hashimoto, Hideki published the artcileCharacteristics of the terahertz radiation from single crystals of N-substituted 2-methyl-4-nitroaniline, Recommanded Product: N-Benzyl-2-methyl-4-nitroaniline, the publication is Journal of Physics: Condensed Matter (2001), 13(23), L529-L537, database is CAplus.

Terahertz (THz) radiation was generated via optical rectification from organic single crystals, i.e. N-substituted (N-benzyl, N-diphenylmethyl, and N-2-naphthylmethyl) derivatives of 2-methyl-4-nitroaniline (MNA), and it was detected by means of the electrooptic sampling method. The intensity and the spectrum of the THz radiation were compared with those of ZnTe and DAST (N,N-dimethylamino-N’-methylstilbazolium p-toluenesulfonate) crystals. The integrated intensity of the THz radiation from the N-benzyl-MNA crystal was two thirds of that for the ZnTe crystal, the best-known practical THz emitter, and was as intense as that for the DAST crystal, the best organic THz emitter ever studied. The spectrum of the ZnTe crystal extended to 3 THz, while that of the N-benzyl MNA and DAST crystals dropped off around 2.5 THz. The THz radiation intensities from all of the organic crystals were compared quant., on the basis of the consideration of mol. arrangements in the crystals. It was suggested that the absorption due to low-frequency phonon modes affected both the intensity and the spectral band shape of the THz radiation.

Journal of Physics: Condensed Matter published new progress about 201157-13-3. 201157-13-3 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is N-Benzyl-2-methyl-4-nitroaniline, and the molecular formula is C14H14N2O2, Recommanded Product: N-Benzyl-2-methyl-4-nitroaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia