Tag: M.W=100-150

Kawamatsu, Yutaka published the artcile2-Amino-4-phenylthiazole derivatives as anti-atherogenic agents, Formula: C3H8N2S, the publication is European Journal of Medicinal Chemistry (1981), 16(4), 355-62, database is CAplus.

Thiazoles I [R = (un)substituted benzyloxy, Ph, PhO, 4-ClC₆H₄O, PhCH₂, PhCH₂CH₂O, 4-ClC₆H₄CO₂, 4-ClC₆H₄CONHCH₂CH₂, 4-ClC₆H₄CH₂NH, 4-ClC₆H₄CH₂S, 3-pyridylmethoxy, 2-thienylmethoxy, cyclohexylmethoxy, 1-methyl-1-cyclohexylmethoxy, Me₃CCH₂O, Me(CH₂)₁₄CH₂O; R¹ = H, Me; R² = H, CHO, acyl, Me, MeSO₂, 4-MeC₆H₄SO₂, allyl, cyclohexyl, Ph; R¹R² = (CH₂)₅] were prepared E.g. refluxing 4-ClC₆H₄CH₂OC₆H₄COCH₂Cl-4 with thiourea and NaOAc in H₂O/EtOH gave 77.5% I (R = 4-ClC₆H₄CH₂O, R¹ = R² = H). I.HCl (R = 4-FC₆H₄CH₂O, R¹ = R² = H) showed pronounced antiatherogenic activity in rats.

European Journal of Medicinal Chemistry 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

Fiuza, S. M. published the artcileOn the correction of calculated vibrational frequencies for the effects of the counterions – ¦Á,¦Ø-diamine dihydrochlorides, Recommanded Product: Propane-1,3-diamine dihydrochloride, the publication is Journal of Molecular Modeling (2015), 21(10), 1-13, database is CAplus and MEDLINE.

The present work provides sets of correction factors to adjust the calculated vibrational frequencies of a series of ¦Á,¦Ø-diamines hydrochloride salts to account for the intermol. interactions with the counterion. The study was performed using different theory levels for predicting the vibrational data of isolated dicationic ¦Á,¦Ø-diamines and their hydrochloride forms, with and without the explicit account of the interactions with the chloride counterions. Different sets of correction factors were determined for each theory level considering the four smallest elements for the ¦Á,¦Ø-diamines series, while their transferability and reliability was evaluated considering the larger elements of the series. The theory level simplification was also evaluated and was found to neither compromise the vibrational frequencies estimates nor the magnitude and accuracy of the pre-defined scaling factors. This suggests that transferability of the correction factors is possible not only for different diamines but also between different levels of theory with the averaged group correction factor, ¦Æ^a_g, being the best choice to account for the effects of the N-H¡¤¡¤¡¤Cl interactions. The possibility of simplifying the theory level without compromising efficiency and accuracy is addnl. of utmost importance. This computational approach can constitute a valuable tool in the future for studying the hydrochloride forms of larger and more complex diamine systems.

Journal of Molecular Modeling 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, Recommanded Product: Propane-1,3-diamine dihydrochloride.

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

Cao, Xiaosong published the artcileTandem Functionalization in a Highly Branched Polymer with Layered Structure, Category: catalysis-chemistry, the publication is Chemistry – A European Journal (2018), 24(22), 5974-5981, database is CAplus and MEDLINE.

A hyperbranched polymer with multilayer structure was developed to demonstrate the possibility of highly efficient tandem functionalization reactions at different domains within one nanostructured platform. The polymer scaffold was constructed by chain-growth copper-catalyzed azide-alkyne cycloaddition polymerization of three functional monomers with sequential monomer addition in one pot. Subsequent reactions with different monomer units resulted in efficient functionalization of each segment with construction of a highly sophisticated polymer structure by a robust procedure. As a proof of concept, the ability of this polymer structure to quant. load six species of guest mols. through three different types of conjugation reactions was demonstrated.

Chemistry – A European Journal 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, Category: catalysis-chemistry.

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

Yonemoto, Katsumi published the artcileReaction of 1,4,2-dithiazolium salts with amino compounds, Quality Control of 6972-05-0, the publication is Bulletin of the Chemical Society of Japan (1988), 61(11), 4043-9, database is CAplus.

Systematic studies on the behavior of 1,4,2-dithiazolium cations I (R = Et, R¹ = Ph, 4-ClC₆H₄, 4-MeC₆H₄, 4-MeOC₆H₄; NR² = NMe₂, NPhMe, morpholino, R¹ = Ph) toward various amino compounds (ammonia, aliphatic and aromatic amines, hydrazine, semicarbazide, thiosemicarbazide derivatives, etc.) were performed. The reaction pathway could be classified into three types, depending on three possible fission modes of the initially formed adduct. The main products were 5-imino-1,4,2-dithiazole, thiourea, and 1,3,4-thiadiazole derivatives, through the three different pathways, resp. In order to clarify the factors controlling the reaction courses, the reactions of I with p-substituted aniline derivatives were carried out under systematically varying conditions. The strength of bases and the polarity of solvents had clear influence on the reactivity. The reaction mechanism is also discussed.

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 C7H7IN2O, Quality Control of 6972-05-0.

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

Rotti, P. B. published the artcileEffect of thiourea and substituted thioureas on electrocrystallization of copper, Formula: C3H8N2S, the publication is Bulletin of Electrochemistry (1987), 3(4), 305-11, database is CAplus.

The presence of traces of thiourea (TU), N,N-dimethylthiourea (DMTU) and phenylthiourea (PTU) in highly purified acid CuSO₄ bath affects the morphol. of Cu electrodeposits and the cathodic polarization on Cu single crystal (100), (110) and (111) planes, in a range of c.d. 2-20 mA/cm². At low c.d. on (100) plane these addition agents bring about a transition from layer type of deposit to ridge type and to pyramidal type of deposit which finally transformed to polycrystalline At high c.ds., layers, truncated pyramids and blocks obtained in pure solution transformed to ridges and pyramidal type which got transformed to polycrystalline deposit. The cathodic overpotentials in the presence of these addition agents were always lower compared to those observed in pure acid CuSO₄ bath, but the trend in the variation of overpotential with time remained the same. The morphol. and overpotential changes observed during electroplating of Cu depend on the concentration of addition agents and the c.d. The cathodic Tafel slope of 120 + 5 mV obtained in pure bath changed slightly in the presence of these addition agents.

Bulletin of Electrochemistry 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

Subramanyam, N. C. published the artcileThiourea and substituted thioureas as corrosion inhibitors for aluminum in sodium nitrite solution, Name: 1,1-Dimethylthiourea, the publication is Corrosion Science (1993), 34(4), 563-71, database is CAplus.

The effect of sulfur-containing organic compounds such as thiourea (TU), Ph thiourea (PTU), di-Ph thiourea (DPTU), allyl thiourea (ATU), p-tolyl thiourea (p-TTU) and N,N-di-Me thiourea (DMTU) on the corrosion of aluminum in sodium nitrite solution at 303 K was investigated using weight loss and polarization techniques. A significant decrease in the corrosion rate of aluminum was observed by the presence of traces of these compounds The corrosion rate was a function of the nature, concentration of the inhibitor, and temperature of the medium. The degree of surface coverage calculated from the results was used to evaluate the free energy of adsorption of the inhibitors. All the inhibitors follow the Frumkin adsorption isotherm. The mechanism of inhibitor action has been discussed on the basis of adsorption and mol. polarizability of the inhibitor. These compounds act as cathodic inhibitors. The neg. values of free energy of adsorption and high degree of protection also confirm the strong interaction of these compounds on the corroding aluminum surface.

Corrosion Science 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 C17H29BO2, Name: 1,1-Dimethylthiourea.

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

Etefagh, R. published the artcileEffect of Zn doping on optical properties and photoconductivity of SnS₂ nanocrystalline thin films, SDS of cas: 6972-05-0, the publication is Bulletin of Materials Science (2013), 36(3), 411-416, database is CAplus.

Zn-doped SnS₂ thin films have been deposited simply by spray pyrolysis technique. The doping level was changed from [Zn/Sn] = 0 to 7.5 at%. The films were characterized by x-ray diffraction, STM, energy dispersive x-ray anal. (EDX), photoluminescence, and UV-vis spectroscopy. XRD patterns of the films with different zinc contents show that all samples have polycrystalline structure with Berndtite dominant phase and preferred orientation of (001) growth plane. Zn insertion causes a significant decrease in grain size. Optical bandgap of the films were calculated for different dopant concentrations and they lie in the region of 2.3-2.7 eV. Surprisingly, regardless of doping level, the luminescent properties of films are related to the fundamental bandgap energy and deep levels inside the bandgap. Photoconductivity of the films were measured under visible light. Sensitivity to the light increases by zinc incorporation, which was a large amount for SnS₂:Zn of 7.5%.

Bulletin of Materials Science 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, SDS of cas: 6972-05-0.

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

Bhaskar Reddy, Manda published the artcileDesign and synthesis of Tr?ger’s base ditopic receptors: host-guest interactions, a combined theoretical and experimental study, SDS of cas: 10517-44-9, the publication is Organic & Biomolecular Chemistry (2015), 13(4), 1141-1149, database is CAplus and MEDLINE.

Two flexible Troeger base ditopic receptors C4TB and C5TB incorporating an aza-crown ether were designed and synthesized for bis[ammonium ion] complexation. A comprehensive study of host-guest interactions was established by ¹H NMR spectroscopy and DFT calculations Bis[ammonium chloride] with a short alkyl chain spacer showed the highest affinity for the receptors. M06-2X/cc-pVTZ calculations including the solvent effects on host-guest complexes were employed to explain and rationalize the exptl. trends. The short N-H¡¤¡¤¡¤O or N-H¡¤¡¤¡¤N hydrogen-bond distances observed in the range of 1.71-1.98 ? indicate the existence of a strong charge assisted hydrogen bonding between the host and the guest. The unusual behavior (higher binding constant) of A5 in ¹H NMR titration is traced to the conformational folding of the guest. The synthesis of the target compounds was achieved by a reaction of 1,4,7-trioxa-10-azacyclododecane and 1,4,7,10-tetraoxa-13-azacyclopentadecane with a bis(bromoethoxy)6H,12H-5,11-Methanodibenzo[b,f][1,5]diazocine derivative (Troger’s base).

Organic & Biomolecular 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 C3H12Cl2N2, SDS of cas: 10517-44-9.

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

Li, Yantao published the artcileHighly selective synthesis of all-carbon tetrasubstituted alkenes by deoxygenative alkenylation of carboxylic acids, Application In Synthesis of 118-90-1, the publication is Nature Communications (2022), 13(1), 10, database is CAplus and MEDLINE.

The synthesis of all-carbon tetrasubstituted olefins under mild reaction conditions is challenging because of the inevitable issues including significant steric hindrance and the uncontrolled Z/E stereoselectivity. In this paper, authors report the synthesis of all-carbon tetrasubstituted alkenes from readily available carboxylic acids and alkenyl triflates with the synergistic catalysis of cyclo-octa-1,5-diene(tetramethyl-1,4-benzoquinone)nickel and visible light under an air atm., thus avoiding the need for a glovebox or a Schlenk line. A wide range of aromatic carboxylic acids and cyclic and acyclic alkenyl triflates underwent the C-C coupling process smoothly, forming structurally diverse alkenes stereospecifically in moderate to good yields. The practicality of the method is further illustrated by the late-stage modification of complex mols., the one pot synthesis and gram-scale applications. This is an important step towards the valuable utilization of carboxylic acids, and it also simplifies the exptl. operation of metallophotoredox catalysis with moisture sensitive nickel(0) catalysis.

Nature Communications 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, Application In Synthesis of 118-90-1.

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

Goswami, Ravi Kumar published the artcileEffect of Lemna minor supplemented diets on growth, digestive physiology and expression of fatty acids biosynthesis genes of Cyprinus carpio, Product Details of C5H11NO2S, the publication is Scientific Reports (2022), 12(1), 3711, database is CAplus and MEDLINE.

The potential nutritional value of duckweed Lemna minor (Lemnaceae) was evaluated for common carp Cyprinus carpio fry. Fish were fed diets containing five graded levels of duckweed: 0% (LM0, control), 5% (LM5), 10% (LM10), 15% (LM15) and 20% (LM20). The final weight and specific growth rate were significantly higher in LM15 and LM20 diets fed fish compared to others. Amylase activity was significantly higher in LM0 treatment. Total protease, trypsin and chymotrypsin activities showed linear relationships with the increased level of duckweed in the diet. Protein and essential amino acids contents were significantly higher in carp fed diets LM15 and LM20 compared to others. Lipid content was significantly higher in fish fed duckweed-based diets compared to control. A direct relationship was found between the inclusion level of duckweed in the diet and n-3 long-chain polyunsaturated fatty acid (LC-PUFA) content of carp. Contents of desatd. and elongated products of dietary linolenic acid (18:3n-3) including 20:4n-3, 20:5n-3, 22:5n-3 and 22:6n-3 increased in a graded manner with increasing dietary duckweed. The monounsaturated fatty acids and n-6 PUFA contents reduced significantly in fish fed duckweed. Expression of fads2d6, elovl2, elovl5 and fas were higher in carp fed diets LM10, LM15 and LM20 compared to control fish. The inclusion of L. minor in diet enhanced the nutritional value of carp by increasing protein, lipid, amino acids and n-3 PUFA contents.

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, Product Details of C5H11NO2S.

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