Category: ethers-buliding-blocks

Lemmens, Vincent published the artcileRu-Bipyridine Entrapped in the Supercages of EMC-1 Faujasite as Catalyst for the Trifluoromethylation of Arenes, Application In Synthesis of 91-16-7, the publication is ACS Applied Materials & Interfaces (2022), 14(1), 971-977, database is CAplus and MEDLINE.

Trifluoromethyl (CF₃) groups are versatile structural motifs especially in the field of agrochems. and pharmaceuticals. However, current trifluoromethylation reactions are generally associated with stoichiometric amounts of transition metals/metal oxidants, homogeneous catalysts, high temperatures, and expensive trifluoromethylating agents. In this work, the homogeneous photocatalyst Ru(bipy)₃²⁺ is entrapped in the pores of a faujasite support (EMC-1) via a “ship-in-a-bottle” strategy. The formation of the coordination compound was confirmed by Fourier transform IR (FTIR), UV-Vis spectroscopy, and X-ray absorption spectroscopy (XAS). Due to its high stability toward acidified environments, this single-site heterogeneous catalyst is suitable for the trifluoromethylation of synthetically interesting (hetero)arenes under visible-light irradiation at room temperature Furthermore, the heterogeneous catalyst could efficiently be reused for at least three times with minimal catalyst leaching/deactivation.

ACS Applied Materials & Interfaces published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Application In Synthesis of 91-16-7.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Oguchi, Minoru published the artcileMolecular Design, Synthesis, and Hypoglycemic Activity of a Series of Thiazolidine-2,4-diones, Safety of 6-Methoxy-N2-methylpyridine-2,3-diamine, the publication is Journal of Medicinal Chemistry (2000), 43(16), 3052-3066, database is CAplus and MEDLINE.

A series of imidazopyridine thiazolidine-2,4-diones were designed and synthesized from their corresponding pyridines. These compounds represent conformationally restricted analogs of the novel hypoglycemic compound rosiglitazone. The series was evaluated for its effect on insulin-induced 3T3-L1 adipocyte differentiation in vitro and its hypoglycemic activity in the genetically diabetic KK mouse in vivo. The structure-activity relationships are discussed. On the basis of the in vivo potency, 5-[4-(5-methoxy-3-methyl-3H-imidazo[4,5-b]pyridin-2-ylmethoxy)benzyl]thiazolidine-2,4-dione was selected as the candidate for further studies in a clin. setting.

Journal of Medicinal Chemistry published new progress about 90817-34-8. 90817-34-8 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Ether, name is 6-Methoxy-N2-methylpyridine-2,3-diamine, and the molecular formula is C7H11N3O, Safety of 6-Methoxy-N2-methylpyridine-2,3-diamine.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Tamura, Masazumi published the artcileEfficient and Substrate-Specific Hydration of Nitriles to Amides in Water by Using a CeO₂ Catalyst, SDS of cas: 16332-06-2, the publication is Chemistry – A European Journal (2011), 17(41), 11428-11431, S11428/1-S11428/6, database is CAplus and MEDLINE.

Cerium dioxide (CeO₂) is an effective heterogeneous catalyst for the hydration of nitriles that have a heteroatom (N or O) adjacent to the α carbon of the CN group. The substrate specificity is derived from an enormous difference of frequency factor. For the hydration of pyrazinecarbonitrile to pyrazinecarboxamide in water, CeO₂ shows higher activity than the state-of-the-art catalysts including enzymes. A Michaelis-Menten-type mechanism is proposed, which involves (1) H₂O dissociation on CeO₂, (2) adsorption of the nitrile on CeO₂, and (3) nucleophilic attack of a hydroxyl species to the adsorbed nitrile.

Chemistry – A European Journal published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C4H6O3, SDS of cas: 16332-06-2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Bolzan, A. E. published the artcileElectrochemical response of thiourea and formamidine disulphide on polycrystalline platinum in aqueous 0.5 M sulphuric acid, Application of Formamidine disulfide dihydrochloride, the publication is Journal of Electroanalytical Chemistry (1999), 475(2), 181-189, database is CAplus.

The electrochem. response of both thiourea and formamidine disulfide dissolved in aqueous 0.5M sulfuric acid on polycrystalline platinum electrodes was studied at 298 K, using voltammetry and rotating ring-disk electrode techniques. The electrooxidation of thiourea on platinum involves two stages occurring in different potential windows. The 1st thiourea electrooxidation stage for E<0.7 V (vs. SCE), yielding soluble formamidine disulfide as the main product, behaves as an electrochem. process under intermediate kinetics. Kinetic parameters for the electrooxidation of thiourea are estimated The voltammetric electroreduction of formamidine disulfide dihydrochloride to thiourea is inhibited gradually by the adsorption of byproducts from the electrochem. reactions. The 2nd thiourea electrooxidation stage for E 0.7 V involves the oxidation of thiourea and adsorbed residues competing with the oxide monolayer formation on platinum.

Journal of Electroanalytical Chemistry published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C2H8Cl2N4S2, Application of Formamidine disulfide dihydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Yokoyama, Naokata published the artcileSynthesis and Structure-Activity Relationships of Oxamic Acid and Acetic Acid Derivatives Related to L-Thyronine, Quality Control of 2944-47-0, the publication is Journal of Medicinal Chemistry (1995), 38(4), 695-707, database is CAplus and MEDLINE.

Aryloxamic acids I (R = NHCOCO₂H, R¹ = Br, Me) and II, (arylamino)acetic acids I (R = NHCHRCO₂H, R¹ = Cl, Me, iodo, R² = Gly-OH, Ala-OH, Phe-OH), arylpropionic acids I (R = CH₂CH₂CO₂H, R¹ = Br, Me), arylthioacetic acids I (R = SCH₂CO₂H, R¹ = Br, Me), and (aryloxy)acetic acid I (R = OCH₂CO₂H, R¹ = Br), related to L-triiodothyronine (L-T₃) were prepared and tested in vitro for binding to the rat liver nuclear L-T₃ receptor and the rat membrane L-T₃ receptor. The structure-activity relationships for the prepared compounds are described, with several I and II showing excellent potency to the nuclear receptor and significantly lower binding affinity to the membrane receptor (IC₅₀ > 5 μM). Some of these compounds, especially in the oxamic acid series I (R = NHCOCO₂H) and II, showed an unprecedented potency for methyl-substituted derivatives such as I (R = NHCOCO₂H, R¹ = Me) and (±)-II. I (R = NHCOCO₂H, R¹ = Me) and (±)-II showed good lipid lowering effects in rats with ED₅₀ = 20 and 5 μg/kg po, resp., and a lack of cardiac side effects in rats at doses as high as 10 and 25 mg/kg po, resp.

Journal of Medicinal Chemistry published new progress about 2944-47-0. 2944-47-0 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 2-Isopropylanisole, and the molecular formula is C6H12O2, Quality Control of 2944-47-0.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Walker, James B. published the artcileInhibition of sulfhydryl enzymes by 1,1′-dithiodiformamidine, Name: Formamidine disulfide dihydrochloride, the publication is Archives of Biochemistry and Biophysics (1960), 86(No. 1), 80-4, database is CAplus and MEDLINE.

Based upon the reaction of SH groups with 1,1′-dithiodiformamidine (I), it is shown that the enzymes papain, urease, and arginineglycine transamidinase contain such groups. A mechanism for this reaction of I is proposed.

Archives of Biochemistry and Biophysics published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C9H6N2O2, Name: Formamidine disulfide dihydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Paterson, Ian published the artcileStudies in marine macrolide synthesis: synthesis of a C₁₆-C₂₈ subunit of spongistatin 1 (altohyrtin A) incorporating the CD-spiroacetal moiety, Formula: C21H37BO, the publication is Tetrahedron Letters (1997), 38(51), 8911-8914, database is CAplus.

The C₁₆-C₂₈ ketone I, containing the CD-spiroacetal of spongistatin 1, was prepared in 17 steps from the aldehyde Me₃CSiMe₂OCH₂CH₂CHO. Both thermodn. and kinetic conditions were explored for controlling the CD-acetal configuration.

Tetrahedron Letters published new progress about 99438-28-5. 99438-28-5 belongs to ethers-buliding-blocks, auxiliary class Chiral,Aliphatic cyclic hydrocarbon, name is (+)-B-Methoxydiisopinocampheylborane, and the molecular formula is C21H37BO, Formula: C21H37BO.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Winefordner, J. D. published the artcileThe use of rigid ethanolic solutions for the phosphorimetric investigation of organic compounds of pharmacological interest, Recommanded Product: 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, the publication is Analytica Chimica Acta (1964), 31(3), 239-45, database is CAplus.

cf. CA 59 13102h; 60, 8605e. The phosphorescence excitation (mμ) and emission maximum (mμ), lifetime (sec.) and limit of detection (γ/ml.) of EtOH solutions at 77°K. of phenobarbital (I), Mebaral, Rutonal, atropine, benzocaine, procaine-HCl, p-aminobenzoic acid, butacaine sulfate, Cyclaine-HCl, Metycaine-HCl, PhCO₂H, cocaine-HCl, quinidine sulfate, quinine-HCl, lidocaine, caffeine, ephedrine, phenylephrinc-HCl, Tronothane-HCl, cinchophen, physostigmine sulfate, and chlortetracycline, are, resp., 240, 380, 1.8, 0.1; 240,380, 2.2, 0.01; 240, 380, 2.5, 0.02; 240,380, 2.1, 0.1; 310, 430, 5.3, 0.007; 310, 430, 3.5, 0.01; 310, 430, 3.2, 0.004; 310, 430, 5.7, 0.05; 240, 400, 2.4, 0.006; 240, 400, 2.7, 0.006; 240, 400, 2.3, 0.005; 240, 400, 2.7, 0.01; 340, 500, 1.3, 0.05; 340, 500, 1.3, 0.04; 265, 400, 1.1, 1.2; 285, 440, 2.0, 0.2; 225, 390, 3.6, 0.2; 290,390, 2.4, 0.01; 300, 410, 1.2, 0.02; 350, 520, 0.8, 0.02; 315, 420, 3.6, 0.03; 280, 410, 2.7, 0.05

Analytica Chimica Acta published new progress about 637-58-1. 637-58-1 belongs to ethers-buliding-blocks, auxiliary class Inhibitor, name is 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride, and the molecular formula is C19H17N3O, Recommanded Product: 4-(3-(4-Butoxyphenoxy)propyl)morpholine hydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Furukawa, Takayuki published the artcileC-H borylation by platinum catalysis, Synthetic Route of 596819-12-4, the publication is Bulletin of the Chemical Society of Japan (2017), 90(3), 332-342, database is CAplus.

Herein, authors describe the platinum-catalyzed borylation of aromatic C-H bonds. N-Heterocyclic carbene-ligated platinum catalysts are efficient catalysts for the borylation of aromatic C(sp²)-H bonds when bis(pinacolato)diboron is used as the boron source. The most remarkable feature of these Pt catalysts is their lack of sensitivity towards the degree of steric hindrance around the C-H bonds undergoing the borylation reaction. These Pt catalysts allow for the synthesis of sterically congested 2,6-disubstituted phenylboronic esters, which are otherwise difficult to synthesize using existing C-H borylation methods. Furthermore, platinum catalysis allows for the site-selective borylation of the C-H bonds ortho to fluorine substituents in fluoroarene systems. Preliminary mechanistic studies and work towards the synthetic application of this platinum catalyzed C-H borylation process are described.

Bulletin of the Chemical Society of Japan published new progress about 596819-12-4. 596819-12-4 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic acid and ester, name is 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, Synthetic Route of 596819-12-4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Furukawa, Takayuki published the artcileC-H Functionalization at Sterically Congested Positions by the Platinum-Catalyzed Borylation of Arenes, Synthetic Route of 596819-12-4, the publication is Journal of the American Chemical Society (2015), 137(38), 12211-12214, database is CAplus and MEDLINE.

Despite significant progress in the area of C-H bond functionalization of arenes, no general method is reported for the functionalization of C-H bonds at the sterically encumbered positions of simple arenes, such as mesitylene. Herein, the authors report the development of the 1st Pt-based catalyst for C-H borylation of arenes and heteroarenes. Notably, this method exhibited high tolerance toward steric hindrance and provided rapid access to 2,6-disubstituted phenylboronic esters, valuable building blocks for further elaborations.

Journal of the American Chemical Society published new progress about 596819-12-4. 596819-12-4 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic acid and ester, name is 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, Synthetic Route of 596819-12-4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem