Tag: M.W=100-150

Fripiat, Jose J. published the artcileAdsorption of amines by montmorillonites. III. Nature of the aminemontmorillonite bond, Formula: C3H12Cl2N2, the publication is Bulletin de la Societe Chimique de France (1962), 635-44, database is CAplus.

The complexes formed between Macid or Msatd. and C₆H₆ solutions of BuNH₂, PrNH₂, ethylenediamine and propylenediamine were studied by infrared spectroscopy. In the Macid complexes there are alkyl mono- and alkyl diammonium cations. Since the amount of adsorption of the diamines is larger than the exchange capacity of the montmorillonite, R(NH₃⁺)₂ becomes converted to the form of (NH₂)R(NH₃⁺). Neutral amine adsorption is identified in these complexes and is similar to that observed on Msatd. Spectroscopic evidence also supports the existence of 2 orientations for the C chains, parallel and perpendicular to the plane of the silicates. Addition of NaOMe to the monoamine complexes expels the amine but MeOH is trapped inside the lattice as it contracts. The infrared spectra of this material shows a pattern characteristic of solid MeOH. When NaOMe is added to the diamine complexes, there is only a partial lattice contraction and the infrared pattern shows pure MeOH vapor characteristics.

Bulletin de la Societe Chimique de France 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, Formula: C3H12Cl2N2.

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

Vignesh, Rajendran Babhu published the artcileCorrosion protection behaviour of sol-gel derived N,N-dimethylthiourea doped 3-glycidoxypropyltrimethoxysilane on aluminium, Recommanded Product: 1,1-Dimethylthiourea, the publication is Progress in Organic Coatings (2014), 77(1), 136-141, database is CAplus.

The present work describes the anticorrosion features of inhibitor doped sol-gel coating on Al metal. Sol-gel coatings were prepared by using 3-glycidoxypropyltrimethoxysilane (GPTMS) as parent precursor. In order to improve the corrosion resistance property of coating, N,N-dimethylthiourea was added into the sol-gel matrix. The corrosion inhibitor doped sol-gel coating on metal was characterized by Fourier transform IR anal. (FTIR) and scanning electron microscope (SEM). Inhibition effect of N,N-dimethylthiourea doped GPTMS coating on Al substrates in 1% NaCl solution was investigated using electrochem. impedance (EIS) and polarization studies. EIS results showed that the corrosion resistance of sol-gel coating significantly improved upon addition of N,N-dimethylthiourea. The study had outlined the nuances of doping an organic inhibitor to enhance the protection ability of sol-gel coating on Al metal.

Progress in Organic Coatings 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 C8H10S, Recommanded Product: 1,1-Dimethylthiourea.

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

Khomutov, R. M. published the artcileHydroxylamine derivatives. IX. Synthesis of some O-substituted hydroxylamines, Computed Properties of 6084-58-8, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1967), 1820-3, database is CAplus.

Saturation of 150 g. dry MeCN in 170 ml. EtOH with HCl at 0-5¡ã and keeping 2 days in the cold gave a precipitate of Et acetimidoacetate-HCl, which was separated and treated with aqueous NaOH at -10¡ã, then with 275 g. NH2OH.HCl in C6H6-H2O and stirred 1 hr. at room temperature to yield 45-50% MeC(:NOH)OEt (I), m. 32¡ã, b12 62¡ã. I was converted to the Na salt by MeONa in MeOH and treated with an alkyl halide to give the following MeC(:NOR)OEt (II): (R, % yield, b.p., and n20D given): Et, 70, b55 60¡ã, 1.4141; iso-Pr 84, 134-6¡ã, 1.4155; iso-Bu, 81, 160¡ã, 1.4240; MeSCH2CH2, 34, b7 85-7¡ã, -; PhCH2, 75, b12 122¡ã, 1.5030. II in Et2O was treated with 1 mole H2O and HCl in Et2O to yield on standing the following RONH2.Hcl (R and m.p. given): Et, 128¡ã; iso-Pr, 85-6.5¡ã; iso-Bu 129.5-30.5¡ã; MeSCH2CH2, 96¡ã (decomposition); PhCH2, 224-6¡ã (free base b3 64-4.5¡ã). BrCH2CO2K (0.32 mole) in H2O treated with 0.32 mole KOH and 0.32 mole I 0.5 hr. at 35¡ã, then diluted at -10¡ã with (CH2Cl)2 and acidifying with HCl, then evaporating in vacuo, gave a residue that on reevapn. with HCl gave 65-70% aminoxyacetic acid-HCl, m. 150-1¡ã (iso-PrOH); heating with EtOH-HCl gave the Et ester HCl salt, m. 115-16¡ã, while heating with benzyl alc. in the presence of p-MeC6H4SO3H in C6H6 gave, after azeotropic removal of H2O, 77% benzyl aminoxyacetate, m. 135-7¡ã. Heating Me N-(ethylidenethoxy)aminoxypropionate in concentrated HCl 2.5 hrs. gave on evaporation 80% free acid-HCl, m. 151¡ã, which with benzyl alc. as above gave the benzyl ester of ¦Â-aminoxypropionic acid, m. 112-14¡ã. I and CF2:CFCl kept in an autoclave with alc. EtONa several days gave 85% MeC(OEt):NOCF2CHFCl, b12 61-2.5¡ã. CCl3CH2OH and ClNH2 in the presence of EtONa in Et2O at -10¡ã, then at room temperature 1 day, gave CCl3CH2ONH2.HCl, m. 196-7¡ã (iso-PrOH), after saturation of the crude product with dry HCl in Et2O.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published new progress about 6084-58-8. 6084-58-8 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is O-Isobutylhydroxylamine hydrochloride, and the molecular formula is C4H12ClNO, Computed Properties of 6084-58-8.

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

Limmer, Matt A. published the artcileAltering the localization and toxicity of arsenic in rice grain, Name: (S)-2-Amino-4-(methylthio)butanoic acid, the publication is Scientific Reports (2022), 12(1), 5210, database is CAplus and MEDLINE.

Abstract: Previous work has shown that inorganic As localizes in rice bran whereas DMA localizes in the endosperm, but less is known about co-localization of As and S species and how they are affected by growing conditions. We used high-resolution synchrotron X-ray fluorescence imaging to image As and S species in rice grain from plants grown to maturity in soil (field and pot) and hydroponically (DMA or arsenite dosed) at field-relevant As concentrations In hydroponics, arsenite was localized in the ovular vascular trace (OVT) and the bran while DMA permeated the endosperm and was absent from the OVT in all grains analyzed, and As species had no affect on S species. In pot studies, soil amended with Si-rich rice husk with higher DMA shifted grain As into the endosperm for both japonica and indica ecotypes. In field-grown rice from low-As soil, As localized in the OVT as arsenite glutathione, arsenite, and DMA. Circumferential model of grain filling for arsenite and DMA and show Si-rich soil amendments alter grain As localization, potentially lessening risk to rice consumers.

Scientific Reports published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Name: (S)-2-Amino-4-(methylthio)butanoic acid.

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

Friedrichsen, Willy published the artcileReactions of mesoionic five-membered heterocycles with o-quinonoid compounds. IV. Mono- and tricyclic 1,3-thiazolium-4-olates, 1,3-dithiolylium-4-olates, Related Products of catalysis-chemistry, the publication is Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie (1981), 36B(5), 609-21, database is CAplus.

Monocyclic 1,3-thiazolium-4-olates I (R = H, NO₂; R¹ = Ph, p-ClC₆H₄) react with o-quinonoid compounds to give [¦Ð4 + ¦Ð4]cycloadducts II and III; tricyclic 1,3-thiazolium-4-olates IV (X = CH:CH, S) similarly yield compounds V (Z = O, PhSO₂N), which can formally be derived from a ketene tautomer. 1,3-Dithiolylium-4-olates are borderline cases; both [¦Ð4 + ¦Ð2], e.g., VI, and [¦Ð4 + ¦Ð4]adducts VII were obtained.

Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie 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

Wiedmaier-Czerny, Nina published the artcileStable isotope analysis confirms substantial changes in the fatty acid composition of bacteria treated with antimicrobial random peptide mixtures (RPMs), HPLC of Formula: 63-68-3, the publication is Scientific Reports (2022), 12(1), 11230, database is CAplus and MEDLINE.

Resistance of plant-pathogenic bacteria to classic antibiotics has prompted the search for suitable alternative antimicrobial substances. One promising strategy could be the use of purposely synthesized random peptide mixtures (RPMs). Six plant-pathogenic bacteria were cultivated and treated with two RPMs previously found to show antimicrobial activity mainly by bacterial membrane disruption. Here, we show that bacteria treated with RPMs showed partly remarkable changes in the fatty acid pattern while those unaffected did not. Quant. changes could be verified by compound specific isotope anal. of ¦Ä13C values (¡ë). This technique was employed due to the characteristic feature of stronger bonds between heavier isotopes in (bio)chem. reactions. As a proof of concept, the increase in abundance of a fatty acid group after RPM treatment was accompanied with a decrease in the 13C content and vice versa. We propose that our findings will help designing and synthesizing more selective antimicrobial peptides.

Scientific Reports published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C20H19NO4, HPLC of Formula: 63-68-3.

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

Xu, Guozhang published the artcileDiscovery of novel 4-amino-6-arylaminopyrimidine-5-carbaldehyde oximes as dual inhibitors of EGFR and ErbB-2 protein tyrosine kinases, Recommanded Product: O-Isobutylhydroxylamine hydrochloride, the publication is Bioorganic & Medicinal Chemistry Letters (2008), 18(12), 3495-3499, database is CAplus and MEDLINE.

We herein disclose a novel series of 4-aminopyrimidine-5-carboxaldehyde oximes that are potent and selective inhibitors of both EGFR and ErbB-2 tyrosine kinases, with IC₅₀ values in the nanomolar range. Structure-activity relationship (SAR) studies elucidated a critical role for the 4-amino and C-6 arylamino moieties. The X-ray co-crystal structure of EGFR with a (fluorobenzylindazolylamino)aminopyrimidine carboxaldehyde O-(2-methoxyethyl) oxime was determined and validated our design rationale.

Bioorganic & Medicinal Chemistry Letters published new progress about 6084-58-8. 6084-58-8 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is O-Isobutylhydroxylamine hydrochloride, and the molecular formula is Al2H32O28S3, Recommanded Product: O-Isobutylhydroxylamine hydrochloride.

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

Becker, Hinnerk Gordon published the artcileIntroduction of cyclic amidines into nitrile-containing polymers in the melt, Name: Propane-1,3-diamine dihydrochloride, the publication is Chemie Ingenieur Technik (2003), 75(1-2), 108-112, database is CAplus.

The reaction of nitrile-containing polymers (such as SAN) with diamines using ZnCl₂ and DBTO as catalysts to give cyclic amidines in the melt was studied as a function of several reaction parameters.

Chemie Ingenieur Technik 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

Bream, John B. published the artcileSeven-membered heterocycles. 25. Synthesis of 1- and 5-aryl-2,4-benzothiazepines, Application In Synthesis of 6972-05-0, the publication is Helvetica Chimica Acta (1977), 60(8), 2872-80, database is CAplus.

Benzothiazepines I (R = H, Me, R¹ = H, 7-Cl, R² = H) and II [R¹ = R² = H, R³ = R⁴ = Me, R³R⁴ = (CH₂)_2-4; R¹ = 8-Cl, R² = H, R³R⁴ = (CH₂)₃; R¹ = H, R² = Me, F, R³R⁴ = (CH₂)₃] were prepared by treating the xylyl dibromides III with thioureas and cyclizing with base. The intermediate IV gave V. Benzothiazepines VI (R⁵ = H, 7-Cl, 8-Cl; R⁶ = H, Me, CH₂CH₂Ph; R⁷ = H, Me) and VII [R⁵ = same; R⁸ = H, Me, R⁹ = Me; R⁸R⁹ = (CH₂)_2-3] were obtained by cyclizing VIII.

Helvetica 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, Application In Synthesis of 6972-05-0.

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

Susnik, Marko P. published the artcileSynthesis of novel 4-(2-amino-5-thiazolyl)-pyrimidine-2-amines as potential protein kinase inhibitors, Safety of 1,1-Dimethylthiourea, the publication is Monatshefte fuer Chemie (2009), 140(4), 423-430, database is CAplus.

A short and efficient sequence for the synthesis of a series of 4-(2-amino-5-thiazolyl)-pyrimidine-2-amines I [R¹ = Ph, 4-MeOC₆H₄; R² = MeNH, Me₂N, H₂N; Ph, 3-MeOC₆H₄, 3-(MeCO)C₆H₄] was developed. 1-Phenyl-2-(4-pyrimidinyl)ethanones, obtained via Weinreb’s methodol., were used in a Hantzsch thiazole cyclization reaction, followed by introduction of the aniline moieties via nucleophilic substitution. Graphical abstract

Monatshefte fuer Chemie 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 C15H24BN3O2, Safety of 1,1-Dimethylthiourea.

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