Tag: M.W=100-150

Kolodziuk, Robert published the artcilePalladium-catalyzed Suzuki cross-coupling of aryl halides with aryl boronic acids in the presence of glucosamine-based phosphines, Formula: C3H8N2S, the publication is Journal of Organometallic Chemistry (2003), 687(2), 384-391, database is CAplus.

Carbohydrate-substituted phosphines are easily obtained in quite good yields by coupling of protected or non-protected D-glucosamine with the corresponding diphenylphosphino acid. These neutral ligands, in association with palladium acetate, are very active catalysts in the Suzuki cross-coupling reaction. The polyhydroxy phosphines are more active than the peracetylated phosphines. The process tolerates electron-rich as well as electron-poor substituents. Excellent turnovers, up to 97 000 are observed

Journal of Organometallic 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

Wang, Wei-Chi published the artcilePalladacycles bearing tridentate CNS-type benzamidinate ligands as catalysts for cross-coupling reactions, Name: 2-(Methylthio)ethanamine hydrochloride, the publication is Dalton Transactions (2012), 41(10), 3022-3029, database is CAplus and MEDLINE.

Three pendant benzamidines, [PhC(:NPh){NH(E)}] [E = (CH₂)₂SMe (1); (CH₂)₂S^tBu (2); o-C₆H₄SMe (3)], are described. Reactions of 1, 2 or 3 with one molar equiv Pd(OAc)₂ in CH₂Cl₂ give the palladacyclic complexes [PhC{NH(¦Ç¹-C₆H₄)}{:N(E)}]Pd(OAc) [E = (CH₂)₂SMe (4); (CH₂)₂S^tBu (5); o-C₆H₄SMe (6)], as mononuclear Pd complexes, resp. A minor product described as 5‘, {[PhC{NPh}{N(CH₂)₂S^tBu}]Pd(OAc)}₂, was isolated as a benzamidinate-bridged dinuclear Pd complex upon recrystallizing from Et₂O/hexane solution Treatment of 1, 2 or 3 with one molar equiv PdCl₂ in the presence of NEt₃ in CH₂Cl₂ gives the palladacyclic complexes [PhC{NH(¦Ç¹-C₆H₄)}{:N(E)}]PdCl [E = (CH₂)₂SMe (7); (CH₂)₂S^tBu (8); o-C₆H₄SMe (9)], as mononuclear Pd complexes, resp. The crystal and mol. structures are reported for compounds 5, 5‘ and 6–8. The application of these palladacyclic complexes to the Suzuki and Heck coupling reactions was examined

Dalton Transactions published new progress about 6950-53-4. 6950-53-4 belongs to catalysis-chemistry, auxiliary class Salt,sulfides,Amine,Aliphatic hydrocarbon chain, name is 2-(Methylthio)ethanamine hydrochloride, and the molecular formula is C12H10FeO4, Name: 2-(Methylthio)ethanamine hydrochloride.

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

Zong, Zhi-Min published the artcileConvenient synthesis of N-methylpyrrolidine-2-thione and some thioamides, Application of 1,1-Dimethylthiourea, the publication is Korean Journal of Chemical Engineering (2003), 20(2), 235-238, database is CAplus.

We examined thermal reactions of CS₂ with N-methyl-2-pyrrolidinone, formamide, acetamide, and DMF. Under optimum conditions N-methylpyrrolidine-2-thione and the corresponding thioamides can be obtained in good to excellent yields.

Korean Journal of Chemical Engineering 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 C37H30ClIrOP2, Application of 1,1-Dimethylthiourea.

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

Svelto, M. published the artcileNoradrenaline induced secretion of nonelectrolytes through frog skin, Product Details of C3H8N2S, the publication is Journal of Membrane Biology (1977), 36(1), 1-11, database is CAplus and MEDLINE.

Addition of noradrenaline (I) [51-41-2] (4 ¡Á 10-5M) to the inner bathing fluid in the skin of the frog Rana esculenta resulted in increased unidirectional fluxes of urea [57-13-6], thiourea [62-56-6], N-methylthiourea [598-52-7], N,N-dimethylthiourea [6972-05-0], and mannitol [69-65-8]. Fluxes towards the external medium (?0) showed much greater increases than those moving in the opposite direction (?i). The effect of I on ?0 was higher for urea and thiourea than mannitol, whereas its effect on ?0 thiourea derivatives was related to lipid solubility This phenomenon did not occur for ?i of the same mols. P-trifluoromethoxycarboxycyandidephenylhydrazone (10-6M) pretreatment strongly inhibited the I effect on ?0. In skin pretreated with colchicine (2 ¡Á 10-5M), both urea fluxes were increased to the same extent by I. I apparently exerts 2 sep. effects: a change in permeability in both directions; a secretion of nonelectrolytes towards the external fluid.

Journal of Membrane Biology 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 C14H10N2O, Product Details of C3H8N2S.

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

Zarudnitskii, E. V. published the artcileC-phosphorylation of 2-dialkylaminothiazole and imidazo[2,1-b]thiazole derivatives, Recommanded Product: 1,1-Dimethylthiourea, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (2002), 68(11-12), 38-42, database is CAplus.

Phosphorylation of 2-dialkylaminothiazole derivatives with PCl₃, Ph₂PCl and Ph₂PBr was studied. Reaction of 2-diethylaminothiazole with R₂PCl gave 2-Et₂N-5-PR₂(C₃HNS) (2 R = Cl, 3 R = Ph). Phosphination of Et 2-diethylaminothiazolecarboxylate (4) with Ph₂PBr gave 5-PPh₂ derivative (5), which was hydrolyzed to free acid (6). Thiazoleacetates 2-R₂N(C₃HNS)-4-CH₂COOEt were also phosphinated in position 5 to give 2-R₂N(C₃NS)-4-CH₂COOEt-5-PPh₂ (8a–c, R = Me, Et, or R₂N = morpholino), which were hydrolyzed to free acids (9a–c). In contrast to esters of 2-dialkylamino-4-thiazoleacetic acids, Et ester of 6-imidazo[2,1-b]thiazoleacetic acid undergoes C-phosphination with Ph₂PCl both at heterocycle and at methylene group.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) 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 C7H11N, Recommanded Product: 1,1-Dimethylthiourea.

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

Ducker, W. A. published the artcileForces between mica surfaces in the presence of rod-shaped divalent counterions, Related Products of catalysis-chemistry, the publication is Langmuir (1992), 8(1), 109-12, database is CAplus.

Recent theor. and exptl. studies have shown that the swelling of some common clay minerals (e.g., montmorillonite) is limited on addition of Ca²⁺ salts because of ion-ion correlation forces. This effect gives rise to strong, short-range attractive forces completely unexpected from classical DLVO theory. The effect was investigated of a rod-shaped divalent ion on the long-range double-layer and short-range solvation forces between mica surfaces in aqueous solution At a concentration of 3 mM this ion both reduces the diffuse double-layer repulsion and creates a strong adhesive min. at a mica-mica separation of about 0.8-0.9 nm, probably because the ion acts as a bridging agent between the facing surfaces. The force measurements are compared with the coagulation behavior of Na⁺-montmorillonite.

Langmuir 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

Fathalla, Walid published the artcileNovel domino synthesis of 2-(2,3,4-substituted phenyl)quinazolin-4-amine, Formula: C8H8O2, the publication is Journal of Heterocyclic Chemistry (2022), 59(5), 933-942, database is CAplus.

Convenient domino protocol was developed for the synthesis of 2-arylquinazolin-4-amines by the reaction of N-(2-cyanophenyl) substituted benzimidoyl isothiocyanates with iso-Pr amine. The major advantages of this protocol are short reaction times, mild conditions, simple work up, high yields, and pure products. The efficacy of this protocol owes to the competence of synthesis, pure isolation of imidoyl isothiocyanates, and the unique structure conformation of the corresponding intermediate thiourea derivatives

Journal of Heterocyclic 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 C8H8O2, Formula: C8H8O2.

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

Ntasi, Georgia published the artcileMolecular signatures written in bone proteins of 79 AD victims from Herculaneum and Pompeii, COA of Formula: C5H11NO2S, the publication is Scientific Reports (2022), 12(1), 8401, database is CAplus and MEDLINE.

An extensive proteomic anal. was performed on a set of 12 bones of human victims of the eruption that in AD 79 rapidly buried Pompeii and Herculaneum, allowing the detection of mol. signatures imprinted in the surviving protein components. Bone collagen survived the heat of the eruption, bearing a piece of individual biol. history encoded in chem. modifications. Here we show that the human bone proteomes from Pompeii are more degraded than those from the inhabitants of Herculaneum, despite the latter were exposed to temperatures much higher than those experienced in Pompeii. The anal. of the specimens from Pompeii shows lower content of non-collagenous proteins, higher deamidation level and higher extent of collagen modification. In Pompeii, the slow decomposition of victims soft tissues in the natural dry-wet hydrogeol. soil cycles damaged their bone proteome more than what was experienced at Herculaneum by the rapid vanishing of body tissues from intense heat, under the environmental condition of a permanent waterlogged burial context. Results herein presented are the first proteomic analyses of bones exposed to eruptive conditions, but also delivered encouraging results for potential biomarkers that might also impact future development of forensic bone proteomics.

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, COA of Formula: C5H11NO2S.

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

Thirunavukkarasu, Rajasekar published the artcileInfluence of extracellular protein isolated from fish gut associated bacteria as an enhancer of growth and innate immune system in Mugil cephalus, HPLC of Formula: 63-68-3, the publication is Scientific Reports (2022), 12(1), 3217, database is CAplus and MEDLINE.

The cultural microbiomes of 27 bacteria colonies were isolated from Mugil cephalus for anal. of the antibacterial and antagonistic activities. A potent probiotic bacterium was characterized using16S r RNA sequencing. The potent strain was added to fish diet to perform the challenge test and to study the growth and immunol. parameter. The extracellular proteins from the probiotic were collected and characterized using MALDI TOF/TOF. Out of G27, G9 strain inhibited all the five pathogenic strains. An isolated bacterium was identified as Bacillus subtilis PRBD09 with accession number KF765648. After 35 days of feeding period B. subtilis PRBD09 enhance the both cellular and humoral immune responses, which responsible for survive of the Mugil cephalus against Aeromonas hydrophila infection. The MALDI TOF sample 08 and 09 were recognized as hypothetical proteins based on the MALDI TOF sample. A cytidinedeaminase was found in samples 10, 11, and 12. Extracellular proteins may be involved for the immunol. increase in Mugil cephalus against Aeromonas hydrophila, according to the current research.

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 C13H10O3, HPLC of Formula: 63-68-3.

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

Kim, Hyunwoo published the artcileA Facile Access to Primary Alkylamines and Anilines via Ir(III)-Catalyzed C-H Amination Using Azidoformates, Formula: C4H12ClNO, the publication is ACS Catalysis (2016), 6(9), 5922-5929, database is CAplus.

Described herein is the development of Ir(III)-catalyzed direct C-H amination using azidoformates as a readily deprotectable amino source. Substrates with unactivated Me C(sp³)-H and aromatic or olefinic C(sp²)-H bonds were smoothly reacted by the iridium-based catalyst system to provide the corresponding primary alkylamines and anilines upon the subsequent removal of N-protecting groups, such as Boc, Fmoc, Cbz, pNZ, or Troc. A brief mechanistic study and synthetic applications are also presented.

ACS Catalysis 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, Formula: C4H12ClNO.

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