Tag: M.W=100-150

Lu, Baolan published the artcileCatalytic synthesis of cyclohexanone ethylene ketal over phosphotungstic acid/silica gel, Formula: C8H14O2, the publication is Jingxi Shiyou Huagong Jinzhan (2011), 12(12), 50-52, database is CAplus.

Cyclohexanone ethylene ketal I was synthesized with cyclohexanone and glycol as the materials, and the catalytic activity of phosphotungstic acid/silica gel catalyst in ketol reaction was studied. According to the results, phosphotungstic acid/silica gel (SG) is a good catalyst for the synthesis of cyclohexanone ethylene ketal. The optimum synthesis conditions were identified: n (cyclohexanone):n (glycol) = 1:1.4, amount of water-carrying agent (i.e. cyclohexane): 8 mL, reaction time: 30 min. The yield of cyclohexanone ethylene ketal can reach 76.4% at such conditions.

Jingxi Shiyou Huagong Jinzhan published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, Formula: C8H14O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Zhu, Haotian published the artcileSynthesis, crystal structure and catalytic activity of a Dawson-type tungstophosphate decorated by copper complexes, COA of Formula: C8H14O2, the publication is Yingyong Huaxue (2015), 32(4), 433-441, database is CAplus.

An inorganic-organic hybrid compound [Cu(H₂biim)₂(H₂O)][{Cu(H₂biim)₂}₂(P₂W₁₈O₆₂)]·11H₂O (H₂biim = 2,2′-biimidazole) (1) was hydrothermally constructed by the reaction of Cu(II)-H₂biim complexes and Dawson-type tungstophosphate, and characterized by single-crystal x-ray diffraction, IR spectroscopy (IR), X-ray powder diffraction (XRD), elemental anal. and electrochem. anal. Structural anal. showed that the polyanion [P₂W₁₈O₆₂]^6-, as a bidentate ligand, coordinates with two Cu²⁺ ions to form a bi-Cu(II)-supporting heteropolyanion [{Cu(H₂biim)₂}₂(P₂W₁₈O₆₂)]^2-, which was surrounded by an isolated [Cu(H₂biim)₂(H₂O)]²⁺ and eleven H₂O mols. The presence of N-H···O/OW hydrogen bonds between H₂biim mols. and polyoxoanion or water mols., in company with the synergistic effect of electrostatic interactions and π-π stack, gave a crystal material with 3-dimensional framework further. Compound 1 displayed good electrocatalytic activity toward the reduction of H₂O₂ and Na₂NO₂. Meanwhile it was also a good acid-catalyst for the synthesis of cyclohexanone ethylene ketal and could be recycled.

Yingyong Huaxue published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C17H14O5, COA of Formula: C8H14O2.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Wu, Haijun published the artcilePromoting the conversion of poplar to bio-oil based on the synergistic effect of alkaline hydrogen peroxide, Safety of 2,2,4-Trimethyl-1,3-dioxolane, the publication is Renewable Energy (2022), 107-117, database is CAplus.

The synergistic catalysis effect of NaOH and H₂O₂ on the hydrothermal liquefaction (HTL) of poplar was investigated and compared to the NaOH or H₂O₂ catalyzed HTL at different temperatures and 30 min residence time. GC-MS, GPC, FT-IR, HPLC and TGA were used to comprehensively characterize the phys. and chem. properties of liquefied products (bio-oil, lignin and solid residue). The results showed that the highest total bio-oil yield (70.65%) was obtained at 280°C with NaOH (35 g/L)/H₂O₂ (30 g/L) as catalysts. The average mol. weight and polydispersity index (PDI) were found to be lower compared to that from other conditions. As the NaOH concentration was increased, the bio-oil yield was improved. The concentration of H₂O₂ for the optimal synergistic effect was observed to be 30 g/L. GC-MS anal. showed that the bio-oil obtained by NaOH (35 g/L)/H₂O₂ (30 g/L) was characterized with the lowest N content. The synergistic effect promoted the higher production selectivity of o-xylene and p-xylene in the bio-oil.

Renewable Energy published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C11H22N2O4, Safety of 2,2,4-Trimethyl-1,3-dioxolane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Tao, Duan-Jian published the artcileKinetics Study of the Ketalization Reaction of Cyclohexanone with Glycol Using Bronsted Acidic Ionic Liquids as Catalysts, Category: dioxole, the publication is Industrial & Engineering Chemistry Research (2012), 51(50), 16263-16269, database is CAplus.

It is remarkable that Bronsted acidic ionic liquids (BAILs) have several unique advantages in the acid-catalysis reaction, which avoids the tech. issues raised from mineral acids. The kinetics for the ketalization of cyclohexanone with glycol using BAILs as catalysts was therefore studied for the first time. The effects of various parameters such as kind of BAILs, temperature, catalyst loading, and molar ratio of the reactants on the conversion of cyclohexanone were examined in detail, and a pseudohomogeneous (PH) kinetic model was used successfully to correlate the exptl. data at from 313.15 to 343.15 K. The kinetic parameters such as reaction rate constant, activation energy, and chem. equilibrium constant then were proposed and utilized to interpret the catalytic activities of the BAILs catalysts. It was also validated from the comparison of catalytic performance among the BAILs, H₂SO₄, and solid resin that the BAILs were considered to be environmentally friendly and high efficient catalysts, and were suggested to replace mineral and solid acids in the synthesis of ketal.

Industrial & Engineering Chemistry Research published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H7NO4, Category: dioxole.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Chen, Wen-long published the artcilePreparation and catalytic application of SO₄^2-/SnO₂-WO₃/KIT-6 complex solid acid, Application of 1,4-Dioxaspiro[4.5]decane, the publication is Guangzhou Huagong (2016), 44(7), 1-4, database is CAplus.

Complex solid acid of SO₄^2-/SnO₂-WO₃/KIT-6 was prepared through impregnation method using KIT-6 as template. The solid acid was used as catalyst for the Baeyer-Villiger oxidation of cyclic ketones and the condensation reaction between ketones/aldehyde and diols. It was found that the synthesized solid acid exhibited promising catalytic activity in the two kinds of reactions. The introducing of the WO₃ and KIT-6 increased not only the acidity but also the specific area of the solid acid, therefore, the catalytic activity of the solid acid was enhanced.

Guangzhou Huagong published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, Application of 1,4-Dioxaspiro[4.5]decane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Lu, Yueqing published the artcileSynthesis of novel carbon/silica composites based strong acid catalyst and its catalytic activities for acetalization, Related Products of dioxole, the publication is Bulletin of Materials Science (2012), 35(3), 419-424, database is CAplus.

Novel solid acid based on carbon/silica composites are synthesized through one-pot hydrothermal carbonization of hydroxyethylsulfonic acid, sucrose and tetra-Et orthosilicate (TEOS). The novel solid acid owned the acidity of 20 mmol/g, much higher than that of the traditional solid acids such as Nafion and Amberlyst-15 (08 mmol/g). The catalytic activities of the solid acid are investigated through acetalization. The results showed that the novel solid acid was very efficient for the reactions. The high acidity and catalytic activities made the novel carbon/silica composites based solid acid hold great potential for the green chem. processes.

Bulletin of Materials Science published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C8H14O2, Related Products of dioxole.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Bobyleva, L. I. published the artcileProduction of propylene glycol, Safety of 2,2,4-Trimethyl-1,3-dioxolane, the publication is Khimicheskaya Promyshlennost (Moscow, Russian Federation) (1990), 710-11, database is CAplus.

Addition of Me₂CO to the reaction mixture in the acid-catalyzed hydration of propylene oxide (I) to propylene glycol (II) in aqueous solution significantly increased selectivity for II, suppressed II polymer formation, and shifted the reaction toward the formation of equilibrium II mixtures with 2,2,4-trimethyl-1,3-dioxolane, which was subsequently hydrolyzed to II during product recovery. H₃PO₄ was chosen as the catalyst instead of H₂SO₄ due to its lower corrosiveness. At reaction temperature 100° and reaction time 15 min, the highest selectivities for II were obtained at Me₂CO concentration 20-40% and I concentration 10-15% in the reaction mixture, and maximum II yields were obtained at H₃PO₄ concentration 0.075-0.125%. I conversion 96-100% and II selectivity 95-100% were obtained by I hydration at 95-100° for 15 min at initial concentrations I 10-12.5, H₂O 50-60, Me₂CO 30-40, and H₃PO₄ 0.1%.

Khimicheskaya Promyshlennost (Moscow, Russian Federation) published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, Safety of 2,2,4-Trimethyl-1,3-dioxolane.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Smith, Brendan M. published the artcileIndium(III) triflate catalysed transacetalisation reactions of diols and triols under solvent-free conditions, SDS of cas: 177-10-6, the publication is Tetrahedron (2012), 68(38), 7775-7781, database is CAplus.

Acyclic acetals and ketals undergo transacetalization in the presence of catalytic quantities of indium(III) triflate (In(OTf)₃) and diols or triols under solvent-free conditions to generate the corresponding cyclic acetals and ketals in excellent yield. The methodol. has been further developed to encompass a tandem acetalization-acetal exchange protocol, which provides a facile and high yielding route to cyclic ketals from unreactive ketones under very mild reaction conditions.

Tetrahedron published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C7H5ClN2S, SDS of cas: 177-10-6.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem

Yip, Lydia published the artcileNanoporous aluminosilicate mediated transacetalization reactions: application in glycerol valorization, HPLC of Formula: 177-10-6, the publication is Catalysis Science & Technology (2012), 2(11), 2258-2263, database is CAplus.

Nanoporous silicate materials, produced using an evaporation-induced self-assembly (EISA) approach, are highly effective catalysts for transacetalization reactions. Both acyclic acetals and ketals undergo rapid exchange in the presence of low loadings of nanoporous aluminosilicate materials and diols and triols to generate the corresponding cyclic acetals and ketals in excellent yield. The protocol is rapid, employs mild conditions, and the catalyst can be recycled a number of times without loss of activity.

Catalysis Science & Technology published new progress about 177-10-6. 177-10-6 belongs to dioxole, auxiliary class Dioxolane,Spiro, name is 1,4-Dioxaspiro[4.5]decane, and the molecular formula is C9H17NO, HPLC of Formula: 177-10-6.

Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem