Tag: M.W=100-150

Liu, Taotao published the artcileZeolite nanofiber assemblies as acid catalysts with high activity for the acetalization of carbonyl compounds with alcohols, Category: dioxole, the publication is RSC Advances (2014), 4(35), 18217-18221, database is CAplus.

Zeolite nanofiber assemblies (HNB-MOR) as efficient heterogeneous catalysts for the formation of a range of acetals in good yields. The mesoporosity of HNB-MOR benefits mass transfer, and the strong acidic sites on HNB-MOR facilitate acetalization activity. The catalyst can be reused 10 times without loss of activity.

RSC Advances 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, Category: dioxole.

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

Espinosa, A. published the artcileOxocarbonium ions: deketalization of 1,3-dioxolanes and other processes in nonaqueous media, Recommanded Product: 2,2,4-Trimethyl-1,3-dioxolane, the publication is Anales de Quimica (1991), 87(3), 391-5, database is CAplus.

Alcoholysis of [(hydroxypropoxy)ethyl]dioxolane I (R = Me) resulted in deketalization to give alkoxybutanones R¹OCH₂CH₂COMe (R¹ = C₁-C₃ alkyl). The deketalization indicates that the oxocarbonium ion intermediates undergo an oxirane elimination. The effect of alc. solvating power on exchange product yields was studied using I (R = H, Me). A linear relation was found for transetherification, transacetalization, and transacetalization-cyclization.

Anales de Quimica 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, Recommanded Product: 2,2,4-Trimethyl-1,3-dioxolane.

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

Kamaraj, Chinnaperumal published the artcileNovel and environmental friendly approach; Impact of Neem (Azadirachta indica) gum nano formulation (NGNF) on Helicoverpa armigera (Hub.) and Spodoptera litura (Fab.), Category: dioxole, the publication is International Journal of Biological Macromolecules (2018), 107(Part_A), 59-69, database is CAplus and MEDLINE.

The future of this study was to prepare a natural pesticide which will not harm the environment and yet control pests. Neem gum nano formulation (NGNF), a novel biopesticide prepared from the Neem gum extract (Azadirachta indica) (NGE) was evaluated for its antifeedant, larvicidal and pupicidal activities against Helicoverpa armigera (Hub.) and Spodoptera litura (Fab.) at 100 ppm. The NGNF showed significant (100%) antifeedant, larvicidal and pupicidal activities against H. armigera and S. litura. The LC₅₀ values of 10.20, 12.49 and LC₉₀ values of 32.68, 36.68 ppm on H. armigera and S. litura, resp. at 100 ppm. The NGNF treatments showed differences in the activities of detoxifying enzymes, carboxylesterases, glucosidases and glutathione S-transferases in the larval gut. Earthworm toxicity illustrated that 6.25 ppm of chem. insecticides (cypermethrin) varied widely in their contact toxicities compared to 100 ppm of NGNF and control in both contact filter paper and artificial soil test. The NGNF were characterized and confirmed by FTIR, XRD, SEM and EDX anal. Ten compounds were identified from the Neem gum extract (NGE) by Gas Chromatog.-Mass Spectrometry (GC-MS) anal. The major compounds were fatty acids like Hexadecanoic acid, oleic acid, and ricinoleic acid. NGNF could be used as an agent to prepare novel bio-pesticides formulations.

International Journal of Biological Macromolecules 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, Category: dioxole.

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

Fasi, Andras published the artcileIsomerization and Dimerization Reactions of Methyloxirane over Various Types of Zeolite and Zeotype, Application In Synthesis of 1193-11-9, the publication is Journal of Catalysis (2001), 200(2), 340-344, database is CAplus.

The ring-opening reactions of methyloxirane on various zeolites and zeotypes (HZSM-5, CuZSM-5, HY, AlMCM-41, SiMCM-41, and BMCM-41) were investigated at 363 K either in a pulse reactor or in a circulation system, in the presence of hydrogen or nitrogen. The acidic mol. sieves were found to be active in isomerization (the products are propionaldehyde and acetone) and dimerization (the products are dioxolane and dioxane derivatives) reactions. Deoxygenation was of minor importance in hydrogen or nitrogen atm. The major product formation pathway was dimerization on every catalytically active material. This transformation route was favored by the confined environment. (c) 2001 Academic Press.

Journal of Catalysis 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, Application In Synthesis of 1193-11-9.

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

Bogatskii, A. V. published the artcileCharges on heteroatoms and relative basicity of 1,3-dioxolane molecules, Product Details of C6H12O2, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (1979), 45(1), 38-41, database is CAplus.

A linear relation was found between the at. charge on the O atoms of I (R = H, Me, Me₂CH; R¹, R² = H, Me) and the basicity of I, as determined by IR frequency shifts of the OH group of PhOH. A linear relation between basicity and Taft σ^* constants was also obtained.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) 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, Product Details of C6H12O2.

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

Giogios, Ioannis published the artcileFatty acid composition and volatile compounds of selected marine oils and meals, Application of 2,2,4-Trimethyl-1,3-dioxolane, the publication is Journal of the Science of Food and Agriculture (2009), 89(1), 88-100, database is CAplus.

Background: Although volatile compounds characterizing seafood have been studied extensively, no similar data are available regarding the volatiles of raw materials used in fish feed. Therefore the aim of this study was to make an initial screening of the volatiles of various common marine raw materials used in the aquaculture feed industry. Nine com. marine oils (German (GFO1, GFO2 GFO3) and Norwegian (NFO) fish oils and salmon (SO1 and SO2), tuna (TO), sardine (SRDO) and shrimp (SHO) oils) and eight com. marine meals (Peruvian (PFM1 and PFM2), Danish (DFM1 and DFM2) and prime quality (PQFM1 and PQFM2) fish meals and Antarctic krill meals (KM1 and KM2)) were analyzed for their fatty acid profiles and volatile flavor compounds The relation between fatty acids and volatiles was examined Results: The highest polyunsaturated fatty acid and eicosapentaenoic acid (20: 5ω3) contents and ω3/ω6 ratio were found in NFO. The fatty acid composition of all marine meals except krill meals was found to be more variable among batches than that of marine oils. Regarding volatiles, all marine raw materials were characterized by the complete absence or negligible levels of 8- and 9-carbon alcs. and carbonyls. All marine oils were found to have high 2-Et furan, 2-methylenebutyl cyclopropane, hexanal, 2,4-octadiene and 3,5-octadiene contents. Marine meals, unlike marine oils, were characterized by the almost complete absence of unsaturated and cyclic hydrocarbons and terpenes and very low levels of furans. Conclusion: Volatiles of marine meals differ from those of marine oils. Unlike fatty acids which give useful traceability information, volatiles seem to fail in this role owing to their strong variability.

Journal of the Science of Food and Agriculture 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, Application of 2,2,4-Trimethyl-1,3-dioxolane.

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

Li, Gui-xian published the artcileStudy on the catalytic synthesis of 1,3-dioxolane over Wells-Dawson-type molybdovanadophosphoric heteropolyacid, Synthetic Route of 1193-11-9, the publication is Fenzi Cuihua (2004), 18(5), 321-325, database is CAplus.

The effects of heteropolyacid catalysts and various structural substrates on the catalytic activity to synthesis 1,3-dioxolane derivatives were investigated. The results indicated that Wells-Dawson Heteropolyacid H₇P₂Mo₁₇VO₆₂ is the best catalyst for this reaction with nearly complete conversion of epoxide and excess 90% of selectivity to 1,3-dioxolane.

Fenzi Cuihua 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, Synthetic Route of 1193-11-9.

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

Chen, Xiaomei published the artcileSynthesis of acetals and ketals catalyzed by task-specific acidic ionic liquid, Formula: C6H12O2, the publication is Yingyong Huagong (2006), 35(2), 96-98, database is CAplus.

In the absence of any organic solvents, the acetalization of aldehydes or ketones with diols was investigated, which catalyzed by task-specific acidic ionic liquid (IL) under mild conditions. The influences of other conditions including the amount of catalyst, reaction time and temperature on yield of products were also discussed. Results showed the optimal reaction conditions were 353 K, the mole ratio of aldehydes or ketones to IL was 5:1, and the yield of acetals achieved 93.8%. It was unnecessary to remove water produced during the reaction process; the catalyst can be reused for five times without any apparent loss of catalytic activity.

Yingyong Huagong 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, Formula: C6H12O2.

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

Liu, Wenzhu published the artcileSulfuric Acid Immobilized on Activated Carbon Aminated with Ethylenediamine: An Efficient Reusable Catalyst for the Synthesis of Acetals (Ketals), Product Details of C8H14O2, the publication is Nanomaterials (2022), 12(9), 1462, database is CAplus and MEDLINE.

Through the amination of oxidized activated carbon with ethylenediamine and then the adsorption of sulfuric acid, a strong carbon-based solid acid catalyst with hydrogen sulfate (denoted as AC-N-SO₄H) was prepared, of which the surface acid d. was 0.85 mmol/g. The acetalization of benzaldehyde with ethylene glycol catalyzed by AC-N-SO₄H was investigated. The optimized catalyst dosage accounted for 5 weight% of the benzaldehyde mass, and the molar ratio of glycol to benzaldehyde was 1.75. After reacting such mixture at 80 °C for 5 h, the benzaldehyde was almost quant. converted into acetal; the conversion yield was up to 99.4%, and no byproduct was detected. It is surprising that the catalyst could be easily recovered and reused ten times without significant deactivation, with the conversion yield remaining above 99%. The catalyst also exhibited good substrate suitability for the acetalization of aliphatic aldehydes and the ketalization of ketones with different 1,2-diols.

Nanomaterials 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, Product Details of C8H14O2.

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

Lin, Sen published the artcileCatalytic activities of dialkyltin compounds containing silicon to the condensation reaction of acetal (ketal)-alcohol, Quality Control of 177-10-6, the publication is Yingyong Huaxue (2013), 30(3), 271-275, database is CAplus.

The catalytic activities of ten dialkyltin compounds containing silicon were investigated through the condensation reaction of acetal (ketal)-alc. Factors such as amount of catalyst, reaction time, molar ratio of aldehyde (ketone) to alc. and solvent kind were studied toward the yield of reaction. The results show that, except one catalyst, nine compounds are good in catalytic activities for the acetalization and ketalization. The yield reached 92% and 86% under optimal compounds: catalyst dosage was 1.4% based on the mass of the reactants, the molar ratio of the aldehyde to glycol was 1:1.3, ketone to glycol was 1:1.9, cyclohexane was used as the water carrying agent, and the reaction was refluxed for 3 h.

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 C8H14O2, Quality Control of 177-10-6.

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