Tag: M.W=100-150

Zheng, Hongli published the artcileDocosahexaenoic acid production of the marine microalga Isochrysis galbana cultivated on renewable substrates from food processing waste under CO₂ enrichment, SDS of cas: 63-68-3, the publication is Science of the Total Environment (2022), 157654, database is CAplus and MEDLINE.

Leftover dough is a starch-rich food processing waste of Chinese steamed bread. Leftover dough hydrolyzates enriched with glucose and amino acids were used to cultivate the marine microalga Isochrysis galbana to produce docosahexaenoic acid (DHA) under CO₂ enrichment. Isochrysis galbana could use mixed carbon sources (CO₂, glucose, and amino acids) synchronously to grow and accumulate DHA. Cell growth, the uptake of glucose and amino acids, and DHA production were significantly affected by CO₂ enrichment. The maximum biomass concentration of 3.85 g L^-1 was achieved with 3% CO₂. And the maximum DHA yield was 65.5 mg L^-1 d^-1. To enhance DHA production, a two-stage cultivation strategy was successfully developed by this work. The maximum DHA yield of the two-stage culture was elevated by 2.3-fold. It is feasible to produce DHA by Isochrysis galbana using leftover dough under CO₂ enrichment.

Science of the Total Environment 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 C15H14Cl2S2, SDS of cas: 63-68-3.

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

Zhao, Min-Min published the artcileSynthesis, crystal structure and dielectric property of clathrate based on 18-crown-6 with biprotonated 1,3-propane-diamine, COA of Formula: C3H12Cl2N2, the publication is Wuji Huaxue Xuebao (2011), 27(6), 1212-1218, database is CAplus.

The reaction of 1,3-propanediamine hydrochloride, 18-crown-6 and trivalent ferric chloride in methanol solution yields an unusual supramol. clathrate, 18-crown-6 and 1,3-propane-diaminium (¦Ì₂-oxo)-hexachloro-di-iron(III) clathrate, [(C₃N₂H₁₂)¡¤(18-Crown-6)₂][Fe₂OCl₆] (1). The biprotonated 1,3-propane-diaminium cation contains two -NH₃⁺ ammonium cations, resulting in a sandwich-type [(C₃N₂H₁₂)²⁺¡¤(18-crown-6)₂] supramol. structure, through N-H¡¤¡¤¡¤O hydrogen bonding interactions within the crystals between the ammonium moieties of cations (-NH₃⁺) and the oxygen atoms of the crown ethers. Dielec. constants of compound 1 were measured at different temperatures and frequencies, showing there is no distinct dielec. anomaly occurred in this case and suggesting that there may be no phase transition within the measured temperature range.

Wuji Huaxue Xuebao 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 C10H7NO3, COA of Formula: C3H12Cl2N2.

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

Bianchini, Robert J. published the artcileSynthesis and characterization of the three geometrical isomers of difluoro(1,3-propanediamine-N,N’-diacetato)chromate(III). Crystal structure of trans-Li[CrF₂(1,3-pdda)].2H₂O, Synthetic Route of 10517-44-9, the publication is Inorganic Chemistry (1986), 25(13), 2129-34, database is CAplus.

sym–cis-, unsym–cis-, And trans-Li[CrF₂(pdda)] (H₂ppda = 1,3-propanediamine-N,N‘-diacetic acid), unsym–cis-Li[CrL(pdda)] (H₂L = oxalic and malonic acids) were prepared and characterized by UV-visible and ²H NMR spectroscopy. trans-Li[CrF₂(pdda)].2H₂O crystallizes in the orthorhombic space group Pnma with a 12.137(6), b 15.450(6), c 7.050(3) ?, Z = 4, and R = 0.053 for 1985 independent observed reflections collected at ambient temperature by a full-matrix least-squares refinement procedure. The complex has distorted-octahedral geometry around the Cr, with 2 F atoms trans to 1 another and a F-Cr-F angle of 176.67(9)¡ã. The Cr-F distances are 1.878(2) and 1.901(2) ?. The independent Cr-O and Cr-N distances are 1.992(2) and 2.060(2) ?, resp. The stability of trans-[CrF₂(pdda)]^– was established by ²H NMR and is attributed in part to the chair conformation of the ligand diamine hydrocarbon backbone. A new preparation scheme for incorporating deuterons into polyaminopoly(carboxylic acid) ligands is also reported.

Inorganic 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, Synthetic Route of 10517-44-9.

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

Talari, Kalpana published the artcileGas chromatography-mass spectrometric determination of organic acids by ion pair liquid extraction followed by in-situ butylation from aqua feed samples, Name: 2-Methylbenzoic acid, the publication is European Journal of Mass Spectrometry (2022), 28(1-2), 25-34, database is CAplus and MEDLINE.

A rapid and sensitive anal. method was developed to quant. determine organic acids (OAs) from fish feed samples extracted by ion-pair (IP) solvent extraction, followed by in-situ butylation and gas chromatog.-mass spectrometric (GC-MS) anal. The extraction of OAs was carried out with acetonitrile containing 10 mM tetrabutylammonium hydroxide (TBAH), and the analytes were derivatized to their Bu esters in the injection port of the GC-MS system. The developed method was validated in the range of 1-5000 ng/g, with recoveries ranging from 93-117%. The limit of detection (LOD) and limit of quantification (LOQ) of the method was 1-5 ng/g and 2-10 ng/g, resp., yielding good linearity (R² > 0.9990) and precision with a relative standard deviation less than 10%. The proposed method was successfully applied to analyze OAs in sinking and floating fish feed samples. The analyzed samples showed the presence of benzoic, succinic, fumaric, glutaric, adipic, and phthalic acids in sinking feed samples; and benzoic, succinic, adipic, phthalic acids in floating feed samples, resp.

European Journal of Mass Spectrometry 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 C10H14O2, Name: 2-Methylbenzoic acid.

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

Yu, Mingming published the artcileElectrochemical-induced benzyl C-H amination towards the synthesis of isoindolinones via aroyloxy radical-mediated C-H activation, Recommanded Product: 2-Methylbenzoic acid, the publication is Green Chemistry (2022), 24(4), 1445-1450, database is CAplus.

A novel electrochem. strategy to selectively and sustainably access isoindolinones I [R¹ = H, 7-Me, 5-F, etc.; R² = H, Me, Et, n-Pr, i-Pr, n-Bu; R³ = Me, n-Pr, i-Pr, n-Bu, cyclopropyl, CD₃] using simple o-alkyl benzoic acids and nitriles as substrates under metal catalyst and external oxidant-free conditions was developed. Meanwhile, nitrile as the nitrogen source plays a vital role, as its derived intermediate facilitates the construction of the amide bond in the product. Mechanistic investigations suggest that aroyloxy radicals were involved in this transformation, which initiated the benzylic C-H amination event by a 1,5-HAT process. The protocol showed a very good functional group tolerance.

Green Chemistry 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 C20H28B2O4S2, Recommanded Product: 2-Methylbenzoic acid.

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

Bregier-Jarzebowska, R. published the artcileInteractions of diamines with adenosine-5′-triphosphate (ATP) in the systems including copper(II) ions, Recommanded Product: Propane-1,3-diamine dihydrochloride, the publication is Journal of Inorganic Biochemistry (2016), 73-82, database is CAplus and MEDLINE.

Interactions were studied in the systems ATP/tn and ATP/Put (tn = 1,3-diaminopropane, Put = putrescine) whereas the complexation reactions in ternary systems Cu(II)/ATP/tn and Cu(II)/ATP/Put. Results of the potentiometric and spectroscopic studies evidenced the formation of adducts of the type (ATP)H_x(PA), where PA = diamine. The thermodn. stability of the complexes and the mode of interactions were determined The interaction products are (ATP)H₃(tn) (1), (ATP)H₂(tn) (2), (ATP)H₃(Put) (3), and (ATP)H₂(Put) (4). On the basis of anal. of changes in the positions of NMR signals, in the pH range of (ATP)H₃(Put) (3) formation, the preferred centers of the interaction between ATP and Put are the endocyclic nitrogen atoms from the nucleotide. However, the shorter diamine tn in the entire pH range reacts with the phosphate groups from ATP. The pos. centers of noncovalent interactions are the protonated -NH⁺_x groups from amines. In both complexes Cu(ATP)H₂(tn) (9) and Cu(ATP)H₃(Put) (11) formed in ternary systems at pH < 6.5, the amines are in the outer sphere of coordination with the noncovalent interaction with anchoring Cu(ATP). Only the phosphate groups from the nucleotide take part in metalation. At higher pH in the range of Cu(ATP)(PA) complex formation, significant differences in the reactions of the two amines appear. The shorter one (tn) binds Cu(II) ions with two nitrogen atoms, while putrescine coordinates in the monofunctional mode, which is undoubtedly related to the differences in lengths of methylene chain. This explains the considerable differences in the stability of Cu(ATP)(tn) (10) and Cu(ATP)(Put) (12). In both complexes the nucleotide is coordinated through phosphate groups. As a result of noncovalent interactions ATP forms mol. complexes with 1,3-diaminopropane and 1,4-diaminobutane (putrescine). Significant differences in the mode of interactions between the two diamines were observed in ATP/diamine binary systems and in ternary systems Cu(II)/ATP/diamine, at high pH.

Journal of Inorganic Biochemistry 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

Lomozik, Lechoslaw published the artcileCopper(II) ions as a factor interfering in the interaction between bioligands in systems with adenosine and polyamines, Related Products of catalysis-chemistry, the publication is Journal of Inorganic Biochemistry (1996), 63(3), 191-206, database is CAplus.

Noncovalent interactions were found to occur in metal-free adenosine-polyamine systems. Overall stability constants and equilibrium constants of adduct formation were determined The ranges in which the adducts occur overlap with the ranges in which nucleoside is deprotonated while polyamine is protonated. Stability constants and complex distribution in the Cu/Ado/PA (PA = polyamine) systems were identified. The coordination mode of the complexes in solution was determined Unlike in 1,3-diaminopropane (tn), putrescine (Put) and 1,7-diamino-4-azaheptane (3,3-tri), in the systems containing spermidine (Spd), the coordination dichotomy between the N(1) and N(7) atoms of the nucleoside disappeared. In some complexes occurring in the systems with tn, 3,3-tri (but not with Put and Spd), coordination with nitrogen atoms at axial positions was detected in solution Generally, however, a tendency to form square-planar structures dominates. Differences in the coordination mode of complexes in solution and solid complexes were determined

Journal of Inorganic Biochemistry 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, Related Products of catalysis-chemistry.

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

Abrahami, Renata A. published the artcileA de novo synthetic route to 1,2,3,4-tetrahydroisoquinoline derivatives, Application In Synthesis of 421-49-8, the publication is Synlett (2018), 29(15), 2066-2070, database is CAplus.

A novel synthetic approach was developed for the construction of the 1,2,3,4-tetrahydroisoquinoline framework, e.g. I (R¹ = Et, CHF₂CH₂, CF₃CH₂, CF₃CHMe, PhCH₂, etc.; R² = H, Br), possessing varied functions. The synthetic strategy is based on oxidative ring opening of the corresponding indandiols, e.g. II, followed by double reductive amination of the dicarbonyl intermediates with various primary alkyl- or fluoroalkylamines R¹NH₂.

Synlett 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, Application In Synthesis of 421-49-8.

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

Dietrich, Bernard published the artcileAnion coordination chemistry: polyguanidinium salts as anion complexons, COA of Formula: C3H12Cl2N2, the publication is Helvetica Chimica Acta (1979), 62(8), 2763-87, database is CAplus.

A series of polyguanidinium salts [(H₂N)₂C⁺NH]_nQ nX^– [I, Q = a polyvalent group, e.g., CH₂CH₂, (CH₂)₃, 1,2-cyclohexylene, nitrilotriethylene; n = valence of Q; X = Br, Cl, picrate, etc.] were prepared by several methods, the best of which was via polynitroguanidine intermediates. Acidity constants for some I were determined and the ability of I to complex phosphate and carboxylate anions was determined by titration data. Stability constants were determined for the complexes and, with NMR data, indicated a chelate effect for the polydentate ligands.

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 C3H12Cl2N2, COA of Formula: C3H12Cl2N2.

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

Boulanouar, Omar published the artcileDissociative electron attachment to DNA-diamine thin films: Impact of the DNA close environment on the OH^– and O^– decay channels, HPLC of Formula: 10517-44-9, the publication is Journal of Chemical Physics (2013), 139(5), 055101/1-055101/9, database is CAplus and MEDLINE.

We measure the desorption of anions stimulated by the impact of 0-20 eV electrons on highly uniform thin films of plasmid DNA-diaminopropane. The results are accurately correlated with film thickness and composition by AFM and XPS measurements, resp. Resonant structures in the H^–, O^–, and OH^– yield functions are attributed to the decay of transient anions into the dissociative electron attachment (DEA) channel. The diamine induces ammonium-phosphate bridges along the DNA backbone, which suppresses the DEA O^– channel and in counter-part increases considerably the desorption of OH^–. The close environment of the phosphate groups may therefore play an important role in modulating the rate and type of DNA damages induced by low energy electrons. (c) 2013 American Institute of Physics.

Journal of Chemical 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, HPLC of Formula: 10517-44-9.

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