Tag: M.W=100-150

Czerney, Peter published the artcileHeterocyclic substituted coumarins from ¦Â-chloropropeniminium salts, Computed Properties of 6972-05-0, the publication is Journal fuer Praktische Chemie (Leipzig) (1982), 324(2), 255-66, database is CAplus.

The chloropropeniminium salts I (X = N⁺Me₂ ClO₄^–; R = H, 6-Br, 7-OH, 7-OMe, 7-NMe₂, 7-pyrrolidino, 8-OMe, 7-NEt₂, R¹ = H; RR¹ = 5,6-CH:CHCH:CH, 7,8-CH:CHCH:CH) and the aldehydes I (X = O) were prepared by treating 3-acetylcoumarins with DMF-POCl₃ in the presence of HClO₄ or H₂O, resp. I are versatile synthetic intermediates giving I (X = CR²CN, R² = cyano, CO₂Et, 2-benzimidazolyl, 4-O₂NC₆H₄) which were converted to the aminobutadienes. I were also cyclized to pyrylium, thiopyrylium, pyrazolyl, and thiazinyl derivatives

Journal fuer Praktische Chemie (Leipzig) 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, Computed Properties of 6972-05-0.

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

Brusoe, Andrew T. published the artcilePalladium-Catalyzed Arylation of Fluoroalkylamines, Recommanded Product: 1,1,1-Trifluoropropan-2-amine, the publication is Journal of the American Chemical Society (2015), 137(26), 8460-8468, database is CAplus and MEDLINE.

We report the synthesis of fluorinated anilines by palladium-catalyzed coupling of fluoroalkylamines with aryl bromides and aryl chlorides. The products of these reactions are valuable because anilines typically require the presence of an electron-withdrawing substituent on nitrogen to suppress aerobic or metabolic oxidation, and the fluoroalkyl groups have steric properties and polarity distinct from those of more common electron-withdrawing amide and sulfonamide units. The fluoroalkylaniline products are unstable under typical conditions for C-N coupling reactions (heat and strong base). However, the reactions conducted with the weaker base KOPh, which has rarely been used in cross-coupling to form C-N bonds, occurred in high yields in the presence of a catalyst derived from com. available AdBippyPhos and [Pd(allyl)Cl]₂. Under these conditions, the reactions occur with low catalyst loadings (<0.50 mol % for most substrates) and tolerate the presence of various functional groups that react with the strong bases that are typically used in Pd-catalyzed C-N cross-coupling reactions of aryl halides. The resting state of the catalyst is the phenoxide complex, [BippyPhosPd(Ar)OPh]; due to the electron-withdrawing property of the fluoroalkyl substituent, the turnover-limiting step of the reaction is reductive elimination to form the C-N bond.

Journal of the American Chemical Society 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, Recommanded Product: 1,1,1-Trifluoropropan-2-amine.

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

Trebichalsky, Pavol published the artcileReduction of herbicide and water stress in spring barley by regulators of polyamine biosynthesis, Product Details of C3H12Cl2N2, the publication is Journal of Microbiology, Biotechnology and Food Sciences (2014), 3(Special2), 171-173, 3 pp., database is CAplus.

The experiment was carried out under artificial light of fluorescent lamps starting with 60% full water capacity which was afterwards decreased on 40% and finally the plants of barley were not watered. 30 plants of this cereal after plant emergence were thinned on 22 pieces. Experiment was treated by triazine herbicide, as well as its mixtures of regulators of polyamine synthesis: ¦Ã-aminobutyric acid, 1.3-propylenediamine dihydrochloride and salicyl acid. Solo application of triazine herbicide during water stress had neg. balance on formation of root and above ground biomass. Addition of regulators of polyamine synthesis had pos. effects on mentioned parameters, but not in comparison to control variant. These stress factors were eliminated most significantly only the application of GABA (100 g.ha-1) in mixture with herbicide.

Journal of Microbiology, Biotechnology and Food Sciences 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 C12H6NNaO4, Product Details of C3H12Cl2N2.

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

Gillon, David W. published the artcileN,N-Disubstituted 2-aminothiazole-5-carboxaldehydes: preparation and investigation of structural features, SDS of cas: 6972-05-0, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1983), 341-7, database is CAplus.

N,N-Disubstituted 2-aminothiazoles were prepared and converted into the corresponding 5-carboxaldehydes by Vilsmeier formylation. The aldehydes were studied by IR and ¹H NMR spectroscopy. The aldehyde group adopts the carbonyl O,S-syn conformation. With N,N-di-Me and N-benzyl-N-Me compounds the barrier to rotation of the amine group is 50-55 kJ/mol and is insensitive to the nature of the 4-substituent. The amine group of the N-methyl-N-Ph compounds has a marked preference for one orientation. Thus, x-ray crystallog. anal. of triazole I showed the Ph group to be directed towards the S of the thiazole ring. The results of the phys. methods overlap in establishing the importance of a mesomeric interaction between the functional groups of 2-aminothiazole-5-carboxaldehydes.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) 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

Hu, Hanqiao published the artcileTranscriptomic analysis of Vigna radiata in response to chilling stress and uniconazole application, Safety of (S)-2-Amino-4-(methylthio)butanoic acid, the publication is BMC Genomics (2022), 23(1), 205, database is CAplus and MEDLINE.

Chilling injury of mung bean (Vigna radiata (L.)) during the blooming and podding stages is a major agricultural threat in Northeast China. Uniconazole (UNZ) can alleviate water deficit stress in soybean and waterlogging stress in mung bean. However, there has been no report on the effect of UNZ application on the growth and transcriptomic profile of mung bean under chilling stress. UNZ application before chilling stress at the R1 stage alleviated the decline in mung bean yield. UNZ delayed the decrease in leaf chlorophyll content under chilling stress at the R1 stage and accelerated the increase in leaf chlorophyll content during the recovery period. Eighteen sep. RNA-Seq libraries were generated from RNA samples collected from leaves exposed to six different treatment schemes. The numbers of DEGs specific for UNZ treatment between D1 + S vs. D1 and D4 + S vs. D4 were 708 and 810, resp. GO annotations showed that photosynthesis genes were obviously enriched among the genes affected by chilling stress and UNZ application. KEGG pathway enrichment anal. indicated that 4 pathways (cutin, suberin and wax biosynthesis; photosynthesis; porphyrin and chlorophyll metabolism; and ribosome) were downregulated, while plant-pathogen interaction was upregulated, by chilling stress. UNZ application effectively prevented the further downregulation of the gene expression of members of these 4 KEGG pathways under chilling stress. UNZ application effectively delayed the decrease in photosynthetic pigment content under chilling stress and accelerated the increase in photosynthetic pigment content during the recovery period, thus effectively limiting the decline in mung bean yield. UNZ application effectively prevented the further downregulation of the gene expression of members of 4 KEGG pathways under chilling stress and increased mung bean tolerance to chilling stress.

BMC Genomics 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, Safety of (S)-2-Amino-4-(methylthio)butanoic acid.

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

Malabarba, Adriano published the artcileSynthesis and biological activity of N⁶³-carboxypeptides of teicoplanin and teicoplanin aglycone, Category: catalysis-chemistry, the publication is Journal of Antibiotics (1989), 42(12), 1800-16, database is CAplus and MEDLINE.

A series of peptide derivatives of teicoplanin A2 (CTA) and deglucoteicoplanin (TD) was prepared by condensation of the 63-carboxy function with the ¦Á-amino group of selected amino acids and their derivatives The modification of the ionic character of CTA and TD influenced their in vitro and in vivo antimicrobial properties to a different extent, depending on the structure of the amino acidic moiety at C-63. A certain effect on binding strength to Ac-L-Lys(Ac)-D-Ala-D-Ala-OH, a synthetic model of the antibiotic’s target peptide, was also observed

Journal of Antibiotics 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

Juszkiewicz, A. published the artcileUltrasonic velocity hydration numbers of polyamines, Quality Control of 10517-44-9, the publication is Ultrasonics (1990), 28(6), 391-3, database is CAplus and MEDLINE.

Ultrasonic velocity hydration numbers of diamines, triamines, and tetraamines and hydrochlorides of these amines were determined by measuring the maximum velocity of ultrasound in aqueous-ethanolic solutions The results are interpreted on the basis of the hydrogen-bonded framework model of the water structure.

Ultrasonics 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

Martin, M. L. published the artcileApplication of nitrogen-15 spectroscopy and dynamic NMR to the study of ureas, thioureas, and their Lewis acid adducts, Synthetic Route of 6972-05-0, the publication is Organic Magnetic Resonance (1980), 13(6), 396-402, database is CAplus.

Rotational barriers and ¹⁵N chem. shifts in 34 ureas and thioureas were measured, and several previously unobsd. rotational barriers were detected using lanthanide reagents or a high-field spectrometer. Nearly constant effects on the rotational activation energy and the ¹⁵N shift were produced on going from ureas to the corresponding thioureas, and correlations were observed between the ¦¤G? and ¦Ä(¹⁵N) values. The results are discussed in terms of lone-pair delocalization, and anomalies with respect to the general behavior may be due to the effect of steric torsion in crowded structures on ¹⁵N shifts and rotation barriers.

Organic Magnetic Resonance 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, Synthetic Route of 6972-05-0.

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

Jackels, Susan C. published the artcileTetragonal cobalt(III) complexes containing tetradentate macrocyclic amine ligands with different degrees of unsaturation, Safety of Propane-1,3-diamine dihydrochloride, the publication is Inorganic Chemistry (1972), 11(12), 2893-901, database is CAplus.

The syntheses, structures, and properties of trans-[Co(TIM)X2]Z, trans-[Co(DIM)X2]Z and trans-Co(DMC)X2]Z (TIM = I; DIM = II; DMC = III; X halide or NO2; Z = halide, ClO4-, or PF6-) were reported. Infrared and PMR spectral studies provided proof of the structures of the macrocyclic ligands in these compounds and the latter gave insight into stereochem. relations among these complexes. Spectrochem. studies revealed that the ligand field strengths of the macro-cycles increased as the degree of unsaturation of the ligand increases. Comparisons with other macrocycles showed the relative effect on ligand field strengths of such groups as -N(H)-, N:c, -N:C-C:N-, and pyridine. Voltammetric data showed that the lower oxidation states of Co are stabilized by greater degrees of ligand unsaturation

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, Safety of Propane-1,3-diamine dihydrochloride.

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

Shahidi, Fereidoon published the artcilePartial molar volumes of organic compounds in water. VI. ¦Á,¦Ø-Diaminoalkane hydrochlorides, Recommanded Product: Propane-1,3-diamine dihydrochloride, the publication is Journal of Solution Chemistry (1978), 7(7), 549-59, database is CAplus.

Measurements of the partial molar volumes in H₂O at 25¡ã of the mono- and dihydrochlorides of the ¦Á,¦Ø-diaminoalkanes, up to a chain length of 10 C atoms, are reported. Volumes of ionization were determined and the electrostriction of the solvent calculated Effects of the substituents are felt up to the ¦Ã-C atom, but thereafter are only very weak or nonexistent.

Journal of Solution 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 C24H12, Recommanded Product: Propane-1,3-diamine dihydrochloride.

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