Tag: M.W=100-150

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

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

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

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

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

Pantel, Siegbert published the artcileCatalytic-kinetic determination of substituted thioureas and thioacetamide by an absorptiostat method with bromopyrogallol red/hydrogen peroxide as the indicator reaction, Related Products of catalysis-chemistry, the publication is Analytica Chimica Acta (1984), 158(1), 85-91, database is CAplus.

In the absorptiostat method described, the concentration of the dye in the bromopyrogallol red/H₂O₂ reaction is kept very low and constant by the automatic addition of increments of bromopyrogallol red solution This is used in aqueous solutions at pH 4.0 to determine the catalyst thiourea, N-methylthiourea, N‘-allylthiourea, and thioacetamide in the 0.1-1 mmol L^-1 range with only 0.5-mL samples. The catalytic activities of another nine substituted thioureas are described; they depend on the kind of N-substituents as has been shown before for the NaN₃/I₂ reaction, but the sequence of activities for different compounds is quite different.

Analytica Chimica Acta 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 C3H8N2S, Related Products of catalysis-chemistry.

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

Pantel, Siegbert published the artcileCatalytic-kinetic determination of thioureas by a biamperostatic method with iodine-azide as the indicator reaction, Formula: C3H8N2S, the publication is Analytica Chimica Acta (1983), 215-22, database is CAplus.

A biamperostatic method, in which the I concentration in the I-azide reaction mixture is kept very low and constant by the automatic addition of increments of a KI₃ solution, was used to determine the catalysts thiourea, phenylthiourea, benzoylthiourea, and tetramethylthiuram sulfide in the nanomolar range in aqueous as well as in 20% ethanolic solution The catalytic activities of another 15 substituted thioureas were also measured and listed.

Analytica Chimica Acta 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 C3H8N2S, Formula: C3H8N2S.

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

Raasch, Maynard S. published the artcileChemistry of sulfur tetrafluoride. IX. Reaction with amino acids in hydrogen fluoride, Name: 1,1,1-Trifluoropropan-2-amine, the publication is Journal of Organic Chemistry (1962), 1406-9, database is CAplus.

cf. Smith, CA 55, 6419i. SF₄ (I) converted the CO group in amino acids to a trifluoromethyl group when the reaction was carried out in HF. When an optically active amino acid was used, optical activity was retained in the resulting fluoro amine. Picolinic, nicotinic, and isonicotinic acids were converted into the Na salts of pipecolic, nipecotic, and isonipecotic acids by dissolving 100 g. of the acid in 300 ml. H₂O containing 33 g. NaOH and charging the solution and 3 g. Ru-C into a bomb, hydrogenating 9 hrs. at 120¡ã, filtering, evaporating, and drying the Na salt 16 hrs. at 90¡ã. Heating 95 g. dodecylamine and 18.5 g. 2-chloropropionic acid 15 hrs. at 100¡ã gave 19 g. N-dodecyl-DL-alanine, m. 210-13¡ã (AcOH-H₂O). The general procedure was to heat 8 hrs. at 120¡ã 0.4 equivalent of the amino acid, 50 g. HF, and 100 g. I in a shaker tube. p-Aminobenzoic acid (14 g.), 100 g. HF, and 30 g. I heated 4 hrs. to 125¡ã then maintained 6 hrs. gave 37% p-aminobenzotrifluoride. With 2-aminobutyric acid, addnl. HF did not raise the low yield. In the absence of HF, I converted nicotinic acid to nicotinoyl fluoride in 50% yield, b₆ 50-2¡ã. This was easily hydrolyzed by H₂O. Except for the picolines, the reaction products were poured into a dish and heated to expel HF. The residue may be transferred to a steam distillation apparatus and steam distilled For the lower amines it was best to isolate as the hydrochloride. In the case of the products from simple aliphatic amino acids, the residue remaining after evaporation of HF stirred with H₂O, filtered, and the filtrate evaporated gave the solid amine-HF. The amine was liberated by addition of 40% KOH. The trifluoromethylpicolines were volatile and such weak bases that evaporation of the reaction mixture, unless carefully done, gave the free picoline. Hence, it was diluted with 75 ml. H₂O, made basic, the mixture steam distilled, and the oil separated The product obtained from quinaldie acid was warmed to expel most of the HF, the residue stirred with H₂O, crystalline 2-(trifluoromethyl)quinoline collected, and recrystallized from hexane. The product from 4,5-imidazoledicarboxylic acid was similarly treated. The following fluoro amines were thus obtained (product, starting amino acid, % yield, b.p., n²⁵_D, and pK_a given): CF₃CH₂NH₂, glycine, 24, 36¡ã, 1.3004, 5.6; CF₃(CH₂)₂NH₂, ¦Â-alanine, 41, 67.5-8.0¡ã, 1.3270, 8.6; CF₃(CH₂)₃NH₂, 4-H₂N(CH₂)₃CO₂H, 7.1, 90-1¡ã, 1.3452, 9.6; MeCH(CF₃)NH₂, DL-alanine, 29, 46-7¡ã, 1.3180, 5.8; EtCH(CF₃)NH₂, DL-2-aminobutyric acid, 3.5, 65-6¡ã, -, 5.7; PrCH(CF₃)NH₂, DL-norvaline, 2.5, 87-8¡ã, 1.3568, 5.7; BuCH(CF₃)NH₂, DL-norleucine, 14, 113-16¡ã, 1.3635, 5.7; Me(CH₂)₅CH(CF₃)NH₂, DL-2-aminooctanoic acid, 39, 158-60¡ã, 1,3825, -; Me₂C(CF₃)NH₂, 2-methylalanine, 35, 54¡ã, 1.3305, 5.8; iso-PrCH(CF₃)NH₂, DL-valine, 4.2, 83-4¡ã, 1.3540, 5.6; iso-PrCH₂CH(CF₃)NH₂, L-leucine, 22, 103-4¡ã, 1.3610, 5.6; CF₃(CH₂)₂CH(CF₃)NH₂, L-glutamic acid, 12, 106¡ã, 1.3222, 4.7; MeS(CH₂)₂CH(CF₃)NH₂, DL-methionine, 1.5, 160-2¡ã, 1.4260, 4.8; MeCH(CF₃)NH(CH₂)₁₁Me, N-dodecyl-DL-alanine, 61, 74-6¡ã/0.18 mm., 1.4119, -; PhCH₂CH(CF₃)NH₂, DL-phenylalanine, 3.6, 53-5¡ã/1 mm., 1.4613, -; p-CF₃C₆H₄NH₂, p-H₂NC₆H₄CO₂H, 37, 85¡ã/14 mm., -, -; 2-CF₃C₅H₁₀N, Na DL-pipecolate, 9.6, 122-4¡ã, 1.3905, 6.4; 3-CF₃C₅H₁₀N, Na DL-nipecotate, 40, 128-30¡ã, 1.3910, 8.7; 4-CF₃C₅H₁₀N, Na isonipecotate, 34, 133¡ã, 1.3920, 9.4; 2-CF₃C₅H₄N, picolinic acid, 53, 139-40¡ã, 1.4166, -; 3-CF₃C₅H₄N, nicotinic acid, 25, 113-15¡ã, 1.4150, -; 4-CF₃C₅H₄N, isonicotinic acid, 57, 108-10¡ã, 1.4155, -; 2-(trifluoromethyl)quinoline, quinaldic acid, 72, 233¡ã (m. 61.5-2.5¡ã), -, -; 4,5-bis(trifluoromethyl)imidazole, 4,5-imidazoledicarboxylic acid, 80, -(m. 167.5-8.0¡ã), -, -.

Journal of Organic Chemistry published new progress about 421-49-8. 421-49-8 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Amine,Aliphatic hydrocarbon chain, name is 1,1,1-Trifluoropropan-2-amine, and the molecular formula is C3H6F3N, Name: 1,1,1-Trifluoropropan-2-amine.

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

Raisfeld, Ilene H. published the artcileRole of terminal substituents in the pulmonary toxicity of bleomycins, Quality Control of 10517-44-9, the publication is Toxicology and Applied Pharmacology (1981), 57(3), 355-66, database is CAplus and MEDLINE.

Amines with structures identical to the chem. substituents X linked to the bithiazole rings of various bleomycins (I) were studied for their pulmonary toxicity in mice. Thus, intratracheally administered putrescine-2HCl [333-93-7], spermidine-3HCl [334-50-9], spermine-4HCl [306-67-2], histamine-HCl [56-92-8], 1,3-diaminopropane-HCl [10517-44-9], and agmatine sulfate [2482-00-0] produced dose-related lesions of pulmonary fibrosis and metaplasia indistinguishable from lesions produced by intact bleomycins. The high pulmonary toxicity of bleomycin A5 [11116-32-8] relative to bleomycin B2 [9060-10-0] corresponded to the changes produced by their resp. spermidine and agmatine substituents. An important role is suggested for the terminal substituent in bleomycin-induced lung injury.

Toxicology and Applied Pharmacology 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, Quality Control of 10517-44-9.

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

Keniston, Richard Chace published the artcilePolyamine-pyridoxal 5′-phosphate interaction: effects of pH and phosphate concentration in Schiff’s base formation, Product Details of C3H12Cl2N2, the publication is Physiological Chemistry and Physics (1979), 11(5), 465-70, database is CAplus.

The polyamines, spermine, spermidine, and putrescine, reacted rapidly with pyridoxal phosphate (I) in aqueous solution at neutral pH to yield Schiff bases. At high pH, spermine and spermidine cyclized with I to give aldamines. The rate of reaction of polyamines with I was inversely proportional to the phosphate concentration of the buffer and directly proportional to the pH over the physiol. range (pH 6.0-8.0). Spermine reacted faster, and at a lower molar concentration, than any other amine or amino acid tested.

Physiological Chemistry and Physics 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, Product Details of C3H12Cl2N2.

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