Catalysis-chemistry

Shibuya, Isao published the artcileThe synthesis of 1,3,5-thiadiazinylium salts, Category: catalysis-chemistry, the publication is Bulletin of the Chemical Society of Japan (1980), 53(11), 3369-70, database is CAplus.

1,3,5-Thiadiazinylium salts I [R, R¹ = Me₂N, (un)substituted phenyl; R² = Ph, Me₂N, PhCH₂S, p-ClC₆H₄, p-MeC₆H₄, p-MeOC₆H₄, EtCHMeS; X^– = ClO₄^–, BF₄^– were synthesized in good yields by the reaction of N-acyl imidoyl chlorides with thioamides or the treatment of 4H-1,3,5-thiadiazines with trityl salts.

Bulletin of the Chemical Society of Japan published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C15H24O2, Category: catalysis-chemistry.

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

Shibuya, Isao published the artcileThe reaction of 2-methylthio-4,6-diphenyl-1,3-thiazin-1-ium perchlorate with nucleophiles, Product Details of C3H8N2S, the publication is Nippon Kagaku Kaishi (1986), 780-4, database is CAplus.

Several 2-substituted 4,6-diphenyl-1,3-thiazin-1-ium salts I (R = MeS, Ph, Me₂N, 4-Me₂NC₆H₄; X = ClO₄, BF₄) were accessible conveniently by the reaction of benzoylphenylacetylene with RCSNH₂ in the presence of HX. The reactivity of I (R = MeS, X = ClO₄) (II) toward nucleophiles, such as active methylenes and various amino compounds, was investigated. Active methylenes and monofunctional primary amines attacked the 2-position of the thiazinium ring to afford 2-(disubstituted methylene)- and 2-(substituted imino)-4,6-diphenyl-2H-1,3-thiazines, resp. On the other hand, bifunctional nucleophiles, such as hydrazine and hydroxylamine, reacted at the 4- and 6-positions of II to give 3,5-diphenylpyrazole and isoxazole, resp.

Nippon Kagaku Kaishi published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C14H28O5S, Product Details of C3H8N2S.

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

Seyedi, Neda published the artcileMicrowave-assisted eco-friendly method for the synthesis of cinnamic acids, Related Products of catalysis-chemistry, the publication is Heterocyclic Letters (2014), 4(1), 13-16, 4 pp., database is CAplus.

Condensation of acylals RCH(OAc)₂ (R = Ph, 2-ClC₆H₄, 2,4-Cl₂C₆H₃, etc.) with malonic acid in the presence of ammonium acetate under microwave irradiation conditions allowed for the green synthesis of cinnamic acids RCH:CHCO₂H in 70-90% yields.

Heterocyclic Letters published new progress about 1772-76-5. 1772-76-5 belongs to catalysis-chemistry, auxiliary class Benzenes, name is (E)-3-(3-Nitrophenyl)acrylic acid, and the molecular formula is C18H23N3O4S, Related Products of catalysis-chemistry.

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

Serve, D. published the artcileElectrochemical properties of diphenylamines and their oxidation products in organic media. IV. The p-monosubstituted diphenylamines and the mechanism of coupling product formation for different diphenylamines, Application In Synthesis of 1821-27-8, the publication is Electrochimica Acta (1976), 21(12), 1171-81, database is CAplus.

The anodic oxidation of 9 paramonosubstituted diphenylamines, e.g. (RC6H4)2NH, R = NH2, OMe, Br, in MeCN was studied by rotating disk electrode voltammetry, cyclic voltammetry, and controlled-potential electrolysis with simultaneous recording of ESR and visible spectra. Depending on the acidity/basicity of the medium, the primary cation radical gives one or two of the coupling products, N,N’-diarylbenzidine, 5,10-diaryl-5,10-dihydrophenazine, N,N,N’-triaryl-p-phenylenediamine, or tetraarylhydrazine; the last 2 are observed only in basic media. N,N’-diarylbenzidine results from Cp-Cp coupling of two R2NH?+ (R = aryl) radicals, whereas tetraarylhydrazine comes from the dimerization of two R2N? in basic media. Dihydrophenazine and phenylenediamine result from Cp-N coupling between R2NH and the corresponding R2N+ (R = aryl). Selection rules for the formation of dihydrophenazines are presented.

Electrochimica Acta published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C15H10O2, Application In Synthesis of 1821-27-8.

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

Schwarzenbach, G. published the artcileThe calculation of intramolecular atomic separation from the dissociation constants of dibasic acids. II. The acidity of some dicarboxylic acids and polymethylene-diammonium ions in water-alcohol mixtures, Name: Propane-1,3-diamine dihydrochloride, the publication is Helvetica Chimica Acta (1933), 522-8, database is CAplus.

cf. C. A. 27, 1556. From e. m. f. determinations in 0-80% aqueous EtOH at 20¡ã are obtained the 1st and 2nd dissociation constants of the acids (CH₂)_n-2(CO₂H)₂ and (CH₂)_n (NH₃⁺)2 where n = 2, 3, 4, 5, 8. For each acid, except oxalic, the relation ?D^x = constant holds (? = work of removing the 2nd proton, D = dielec. constant of the solution, x = constant).

Helvetica Chimica Acta 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 C12H13NO3, Name: Propane-1,3-diamine dihydrochloride.

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

Schmitz-Moormann, Paul published the artcileTissue staining by basic dyes. I. Influence of the pH of the staining solution and of the dye-affinity on the adsorption of the dye, HPLC of Formula: 10510-54-0, the publication is Histochemie (1968), 16(1), 23-35, database is CAplus and MEDLINE.

Diluted heat-coagulated egg-white, citrated defibrinated beef-serum, and minced beef muscle were washed with alc., acetone, and ether, dried at 50¡ã and ground. Dye adsorption on the protein powders and on Sephadex, G-25 fine, was determined by shaking 1 g. dry protein or Sephadex with 20 ml. buffered 10-4M dye for 1 hr., leaving at room temperature overnight, shaking again, and centrifuging. Michaelis buffers, ionic strength 0.1, 0.1 N HCl, and N HCl were used. Methylene blue, toluidine, blue, cresyl fast violet, crystal violet, alcain blue, thioflavine T, and acridine orange were tested. Except for Sephadex, which failed to stain with methylene blue, the 3 protein powders stained minimally at pH 1 and staining increased to a maximum at pH 9. Swelling of proteins was maximal at pH 1, but varied little with pH above pH 2. A chromatog. method was developed in which 10 g. protein or Sephadex was allowed to swell in water overnight, transferred to a chromatographic column, and washed with buffer. Dye (0.01 M) diluted with 1 volume buffer was applied and the column developed with buffer. The fraction (25 ml.) in which the peak dye concentration appeared varied with pH. Plots of the number of the peak fractions against pH gave a measure of the affinity of various dyes. All dyes were retarded with increasing pH. The order of affinity was crystal violet > acridine orange > toluidine blue > methylene blue ¡Ö thioflavine T. With Sephadex there was no dependence on pH and the order of dye affinity was reversed.

Histochemie published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, HPLC of Formula: 10510-54-0.

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

Sangster, James published the artcileOctanol-water partition coefficients of simple organic compounds, COA of Formula: C10H20O2, the publication is Journal of Physical and Chemical Reference Data (1989), 18(3), 1111-229, database is CAplus.

Octanol-water partition coefficients (log P) for 634 organic compounds representing all principle classes were retrieved from the literature and are critical evaluated. Recommendations are given. Pertinent thermodn. relations are presented, with a discussion of direct and indirect methods of measurements.

Journal of Physical and Chemical Reference Data published new progress about 3115-28-4. 3115-28-4 belongs to catalysis-chemistry, auxiliary class Aliphatic Chain, name is 2-Butylhexanoic acid, and the molecular formula is C10H20O2, COA of Formula: C10H20O2.

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

Sakurai, Masao published the artcileApparent molal volumes of some organic electrolytes in a dilute aqueous solution at 5, 25, and 45.deg., Category: catalysis-chemistry, the publication is Bulletin of the Chemical Society of Japan (1973), 46(6), 1596-602, database is CAplus.

The apparent molal volumes, ?v, of 5 series of homologous organic salts of the H(CH2)n-COONa (n = 0-6), (CH2)n(COONa)2 (n = 0, 2, 3, 4, 6, 8), H-(CH2)nNH3Cl (n = 0, 2, 6), (CH2)n(NH3Cl)2 (n = 2, 3, 6), and H(CH2)nSO3Na (n = 1,2) types in a dilute aqueous solution were measured by means of a float method as a function of the concentration and the temperature The coefficients of the deviation of ?v from the Debye-Hueckel limiting law, bv, are neg. for most organic electrolytes. The large pos. bv values observed for the Na oxalate and Na succinate solutions at 5¡ã were attributed to ion-pair formation. The partial molal expansibility of organic ions were evaluated and interpreted on the basis of the multilayer hydration model. The estimation of volume increments per CH2 group suggests that the influences of ammonium ions on the hydrophobic hydration around CH2 groups differ significantly from those of carboxylate ions. The volume change accompanying the substitution of a terminal H atom with an ionic group was calculated, and discussed in connection with the overlapping effect of electrostriction in bolaform electrolytes.

Bulletin of the Chemical Society of Japan 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, Category: catalysis-chemistry.

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

Saito, Shuji published the artcilePrecipitation of nonionic surfactants with polymeric acids – effect of organic cations, Category: catalysis-chemistry, the publication is Tenside Detergents (1980), 17(2), 84-5, database is CAplus.

Poly(acrylic acid) [9003-01-4] forms a complex with C₈H₁₇C₆H₄O(CH₂CH₂O)_nH [9036-19-5] (average n = 9.2), and the complex is precipitated from aqueous solution by the addition of H(CH₂)_nNH₂.HCl (I) (n = 1, 4, 6, 8, or 12) or H₂N(CH₂)_nNH₂.2HCl (II) (n = 3, 4, 6, or 8) to the solution At high concentrations of the amine salt, the precipitate is redispersed. The I are more effective than the II for precipitating the complex, and the precipitation and redispersion occur at lower salt concentrations with increasing alkyl chain length of the amines.

Tenside Detergents 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, Category: catalysis-chemistry.

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

Sahoo, Santosh K. published the artcileAn unprecedented oxidative intermolecular homo coupling reaction between two sp³C-sp³C centers under metal-free condition, SDS of cas: 457-68-1, the publication is Tetrahedron Letters (2016), 57(31), 3476-3480, database is CAplus.

An unprecedented formation of benzylic sp³C-sp³C coupled dibenzylic products was illustrated. The reactions were carried out in the presence of three oxidizing reagents, i.e., diacetoxy-iodobenzene (IBDA), N-fluorobenzenesulfonimide (NFSI), and pyridine (Py) using toluene derivatives

Tetrahedron Letters published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, SDS of cas: 457-68-1.

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