Tag: M.W=50-100

Prieto, Alejandro published the artcileOne-pot two-step process for direct propylene oxide production catalyzed by bi-functional Pd(Au)@TS-1 materials, Application of 2-Methoxypropan-1-ol, the publication is Applied Catalysis, A: General (2016), 73-84, database is CAplus.

Different bi-functional materials (Pd(Au)@TS-1) based on metallic nanoparticles supported onto active nanocrystalline titanium silicalite (TS-1) zeolites were synthesized, characterized and used as recyclable heterogeneous catalysts for direct propylene oxide production from hydrogen, oxygen and propylene through one-pot two-step consecutive process. These catalysts allowed carrying out the combined reaction where metallic nanoparticles catalyzed the formation of in situ H₂O₂ that was the necessary intermediate for propylene epoxidation catalyzed by active TS-1 nanocrystalline support. Several variables were considered such as use of supercritical CO₂ conditions, modifiable content of metallic species, and presence of addnl. co-solvents, surface acidity inhibitors and H₂O₂ stabilizers. Reusability and stability of the bi-functional catalyst was showed through consecutive catalytic cycles.

Applied Catalysis, A: General published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Application of 2-Methoxypropan-1-ol.

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

Pang, Sujuan published the artcileComponent analysis of poly propylene carbonate washing liquid in washing section, Quality Control of 1589-47-5, the publication is Huaxue Fenxi Jiliang (2012), 21(4), 34-36, database is CAplus.

Washing liquid of the poly propylene carbonate in washing section was analyzed qual. and quant. by gas chromatog. mass spectrometry. The results showed that the main impurities of washing liquid were 1-methoxyl-2-propanol, 2-methoxyl-1-propanol, methyl-carbonate, dipropylene glycol, propylene carbonate. The mass fraction of propylene epoxide and methanol in the first washing liquid was 32.34% and 58.74%, in the fourth washing liquid were 10.61% and 89.01% resp. With the washing time increasing, the methanol content increased and the propylene epoxide content reduced.

Huaxue Fenxi Jiliang published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Quality Control of 1589-47-5.

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

Timofeeva, M. N. published the artcileEffect of the acid-base properties of Zr,Al-pillared clays on the catalytic performances in the reaction of propylene oxide with methanol, Synthetic Route of 1589-47-5, the publication is Applied Catalysis, B: Environmental (2011), 104(1-2), 54-63, database is CAplus.

A series of Zr,Al-pillared interlayered clays (Zr,Al-PILCs) have been prepared and characterized by X-ray diffraction, elemental anal., FT-IR and N2-adsorption/desorption analyses, 27Al NMR(MAS), FT-IR spectroscopy using pyridine, PhCN and CDCl3 as probe mols. It was found that textural and physicochem. properties of Zr,Al-PILCs depend on Zr content in clay. The relationship between the acid-base properties and catalytic performances of Zr,Al-PILCs was revealed in the synthesis of propylene glycol Me ether from methanol and propylene oxide. The results show that the conversion of propylene oxide and the selectivity to 1-methoxy-2-propanol decrease with increasing the amount of zirconium in Zr,Al-PILCs due to the change in acid-base properties.

Applied Catalysis, B: Environmental published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C20H19NO4, Synthetic Route of 1589-47-5.

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

Timofeeva, M. N. published the artcileSynthesis of propylene glycol methyl ether from methanol and propylene oxide over alumina-pillared clays, Application of 2-Methoxypropan-1-ol, the publication is Applied Catalysis, B: Environmental (2011), 102(3-4), 433-440, database is CAplus.

Al-pillared interlayered clays (Al-PILCs) were synthesized by the exchange reaction between Na-clay and Al-hydroxypolycation solutions aged for 0.5-14 days and characterized by DRS-UV-vis, x-ray diffraction, FT-IR and N₂-adsorption/desorption analyses, Hammett acidity titration with n-butylamine and FT-IR spectroscopy using PhCN and CDCl₃ as probe mols. The aging time of Al-hydroxypolycation pillaring solution affects both the textural characteristics and the physicochem. properties of Al-PILCs. Al-PILCs were tested as catalysts for synthesis of propylene glycol Me ether from methanol and propylene oxide. Increase in Al content due to the prolonged aging time favors the increase in the activity of Al-PILCs.

Applied Catalysis, B: Environmental published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H6O3, Application of 2-Methoxypropan-1-ol.

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

Rajendiran, Senkuttuvan published the artcileIonic-Liquid-Based Heterogeneous Covalent Triazine Framework Cobalt Catalyst for the Direct Synthesis of Methyl 3-Hydroxybutyrate from Propylene Oxide, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Inorganic Chemistry (2017), 56(12), 7270-7277, database is CAplus and MEDLINE.

β-Hydroxy esters are considered as potential building blocks for the production of fine chems. and potential drug mols. in various industries. Developing an efficient and recyclable catalyst for the synthesis of β-hydroxy esters is challenging. Here we report the first ionic-liquid-based heterogenized cobalt catalyst, [imidazolium-CTF][Co(CO)₄], for the direct ring-opening carbonylation of propylene oxide to Me 3-hydroxybutyrate (MHB) with 86% selectivity (>99% conversion).

Inorganic Chemistry published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

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

Lele, S. S. published the artcileCyanocoumarins, Name: 2-Methoxyacetamide, the publication is Journal of Organic Chemistry (1962), 637-9, database is CAplus.

Some cyanocoumarins were prepared by the Rosenmund-von Braun reaction on the halogenated coumarin in order to study their hydrolysis. The iodo derivative (0.01 mol) was mixed with 0.02 mol anhydrous CuCN, heated at the specified temperature 10 min., the mixture powd., extracted with either Me₂CO or AcOH, and the residue from the extract recrystallized from AcOH (needles). Addition of cyano derivative from a previous run to the mixture gave a higher yield. The following cyanocoumarins were thus obtained (coumarin, Rosenmund-von Braun reaction temperature, m.p., and % yield given): 7-methoxy-8-cyano, 180-90°, 269-70°, 60; 7-methoxy-3-cyano, 180-90°, 225-30°, 40; 7-methoxy-8-cyano-6-carbomethoxy, 210-20°, 102°, 54; 7-methoxy-8-cyano-4-carbomethoxymethyl, 190-210°, 192°, 22; 7-methoxy-8-cyano-4-Me, 220-30°, 289-91°, 55; 7-methoxy-3-cyano-4-Me, 180-5°, 223°, 75; 7-methoxy-8-cyano-4-methyl-6-carbomethoxy, 240-5°, 276°, 70; 7-methoxy-3-cyano-4-methyl-6-carbomethoxy, 250-5°, 249°, 70; 5-methoxy-8-cyano-4-Me, 260-70° 227-30° 46; 5-methoxy-8-cyano-4-methyl-6-carbomethoxy, 225-30° 236° 44. Hydrolysis A. The eyano compound (0.5 g.) was heated 2-3 h. with 90% H₂SO₄, the solid obtained on pouring the mixture on ice extracted with dilute NaHCO₃, and the product crystallized from AcOH. Method B. The cyanocoumarin (0.5 g.) was heated 2-3 h. with 10% alc. KOH, the product acidified, purified through NaHCO₃, and crystallized from AcOH. The following hydrolysis products from the cyanocoumarins mentioned above were obtained (hydrolysis method, product obtained, and m.p. given): A, 7-methoxy-8-carbamoyl, 277-9°; A, 7-methoxy-8-carbamoyl-6-carboxy, 267-8°; B, 7-methoxy8-cyano-6-carboxy, 228°; A, 7-methoxy-8-carbamoyl-4-acetic acid, 235-8°; B, 7-methoxy-8-cyano-4-acetic acid, 274-5° (and 7-methoxy-8-cyano-4-Me, -); A, 7-methoxy-8-carbamoyl-4-Me, 278°; A and B, 7-methoxy-4-methyl-3-carboxy, 184-5°; A, 7-methoxv-8-carbamoyl-4methyl-6-carboxy, 272°; B, 7-methoxy-8-cyano-4-methyl-6carboxy, 283°; A, 7-methoxy-4-methyl-3,6-dicarboxy, 20810°; B, 7-methoxy-3-cyano-4-methyl-6-carboxy, 248°; A, 5-methoxy-8-carbamoyl-4-Me, 286°; A, 5-methoxy-8carbamoyl-4-methyl-6-carboxy, 272°; B, 5-methoxy-8-cyano-4-methyl-6-carboxy, 248°. The carbamoyl derivative (0.5 g.) heated 3 h. at 120° with 18 mL. 50% H₂SO₄ and the mixture poured on ice gave the following results (method of hydrolysis, coumarin product obtained, m.p. given): III, 7-hydroxy-8-carboxy, 230°; 10% alkali or 50% H₂SO₄, 7-methoxy-6-carboxyl,-; 10% alkali or 50% H₂SO₄, 7-methoxy-4-Me, -; 10% alkali or 50% H₂SO₄, 7-methoxy-4methyl-8-carboxy, -; 10% alkali or 50% H₂SO₄, 7-methoxy-4-methyl-6-carboxy, -; 50% H₂SO₄, 5-methoxy-4-methyl-8-carboxy, 286°; 50% H₂SO₄, 5-methoxy-4-methyl-6,8-dicarboxy, 284°. The methoxycyanocoumarin was dissolved in Ac₂O, heated 3 h. with HI at 120°, and the product crystallized from AcOH. The following hydroxycyanocoumarins were thus obtained (coumarin and m.p. given): 7hydroxy-8-cyano, 305°; 7-hydroxy-8-cyano-4-Me, 272°; 7-hydroxy-3-cyano-4-Me, 298°; 5-hydroxy-8-cyano-4-Me, 276°.

Journal of Organic Chemistry 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 C3H7NO2, Name: 2-Methoxyacetamide.

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

Tao, Duan-Jian published the artcileSynthesis of Tetrabutylphosphonium Carboxylate Ionic Liquids and Its Catalytic Activities for the Alcoholysis Reaction of Propylene Oxide, Application of 2-Methoxypropan-1-ol, the publication is Industrial & Engineering Chemistry Research (2013), 52(48), 17111-17116, database is CAplus.

Four tetrabutylphosphonium carboxylate ionic liquids ([P₄₄₄₄]-[CA]) were prepared, characterized, and used as catalysts for the synthesis of propylene glycol Me ether (PGME) from the alcoholysis reaction of propylene oxide (PO) with methanol. The effects of various parameters such as the kind of ILs, temperature, reaction time, catalyst loading, and molar ratio of the reactants on PGME yield and selectivity were also studied in detail. The results indicated that tetrabutylphosphonium butyrate ([P₄₄₄₄]-[Buty]) exhibited the best catalytic activity in comparison to three other carboxylate ILs, and PGME was produced in nearly 94% yield under mild conditions. In addition, [P₄₄₄₄]-[Buty] was found to exhibit good catalytic activities and selectivities in other alcoholysis reactions of epoxides with various alcs., such as PO with n-propanol, PO with n-butanol, 1-(allyloxy)-2,3-epoxypropane with methanol, and 1,2-epoxybutane with methanol. [P₄₄₄₄]-[Buty] could also be recovered easily and used repetitively at least 10 times without an obvious decrease in activity and quantity. Therefore, [P₄₄₄₄]-[Buty] proved to be an effective recyclable homogeneous catalyst for the synthesis of PGME and showed potential application in industry.

Industrial & Engineering Chemistry Research published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C8H5IO, Application of 2-Methoxypropan-1-ol.

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

Okabe, Hiroyuki published the artcileAcceptor-Controlled Transfer Dehydration of Amides to Nitriles, Safety of 2-Methoxyacetamide, the publication is Organic Letters (2019), 21(12), 4767-4770, database is CAplus and MEDLINE.

Palladium-catalyzed dehydration of primary amides to nitriles efficiently proceeds under mild, aqueous conditions via the use of dichloroacetonitrile as a water acceptor. A key to the design of this transfer dehydration catalysis is the identification of an efficient water acceptor, dichloroacetonitrile, that preferentially reacts with amides over other polar functional groups with the aid of the Pd catalyst and makes the desired scheme exergonic, thereby driving the dehydration.

Organic Letters 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 C3H7NO2, Safety of 2-Methoxyacetamide.

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

Brei, V. V. published the artcileDehydrogenation of alcohols over copper catalyst: correlation between the activation energy of reaction and chemical shift δ (R17OH), Computed Properties of 1589-47-5, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (2017), 83(8), 117-122, database is CAplus.

The dehydrogenation of primary and secondary alcs. over Cu/ZnO-ZrO2-Al2O3 catalyst were studied using a desorption mass-spectrometry technique. The correlation between activation energy of reaction and chem. shift δ (R17OH) of studied alcs. was found. It is shown that ability of alcs. to dehydrogenation decreases with increase of their nucleofility. The mechanism of alc. dehydrogenation on metal copper clasters was proposed.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Computed Properties of 1589-47-5.

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

Klages, Friedrich published the artcileOxonium salts. II. A new reaction for the preparation of trialkyloxonium salts, Application In Synthesis of 16332-06-2, the publication is Chemische Berichte (1953), 1322-6, database is CAplus.

cf. C.A. 47, 9897f. When 122 g. di-Me etherate (I) of HSbCl₆ in 100 cc. liquid SO₂ is treated at -30° with 32.5 g. N₂CHCO₂Et (II) while the mixture is stirred in a N stream, the SO₂ evaporated, and the residue triturated with ether, 97.5% trimethyloxonium hexachloroantimonate, [R₃O]⊕SbCl₆ symmetric difference symbol (III) (R = Me), sandlike crystals, m. 159°, is obtained. III are formed according to the reactions: R₂O.HSbCl₆ + II → [EtO₂CCH₂O⊕R₂]SbCI₆ symmetric difference symbol (IV) + N₂; IV + R₂O → EtO₂CCH₂OR + III. Evaporating the ether solution gives 50% MeOCH₂CO₂Et, b₁₃ 41-5°, b. 131° (amide, m. 92°). The di-Et homolog (48 g.) of I, treated in 100 cc. CH₂Cl₂ with 11.4 g. II at 10° and the residue triturated with ether gives 85% III (R = Et), m. 133°, and 2% EtOCH₂CO₂Et, b₁₃ 53° (amide, m. 82°). Adding dropwise 29.9 g. SbCl₅ to 20.4 g. Pr₂O in 100 cc. SO₂ at -70° and treating the precipitate with HCl give 100% Pr homolog of I, m. 72° (sealed tube, decomposition), which, treated in CH₂Cl₂ with II gives 73% III (R = Pr), m. 105° (decomposition). Adding 29.9 g. SbCl₅ dropwise to 26 g. Bu₂O in 100 cc. SO₂ while simultaneously passing HCl and N through the mixture and evaporating the SO₂ give 60 g. Bu homolog of I, m. 45-54° (sealed tube, decomposition), which with II in CH₂Cl₂ yields 33% III (R=Bu), m. 119° (decomposition). Saturating 60 g. SbCl₅ in 50 cc. CH₂Cl₂ at -70° with dry HCl in a Natm. and then adding very slowly 41 g. (Me₂CH)₂O (the mixture must not turn red) give 87% Me₂CH homolog (V) of I, m. 104°(decomposition). Adding 15.2 g. II dropwise to 72 g. V in 200 cc. CH₂Cl₂ at -5° and treating the precipitate repeatedly in CH₂Cl₂with II gives 9% [EtO₂CCH₂O(CHMe₂)₂]⊕SbCl₆ symmetric difference symbol, m. 116° (decomposition); di-iso-Am homolog, 5%, m. 89° (decomposition).

Chemische Berichte 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 C3H7NO2, Application In Synthesis of 16332-06-2.

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