Tag: M.W=100-150

Mahungu, Symon M. published the artcileVolatile compounds in heated oleic acid-esterified propoxylated glycerol, SDS of cas: 1193-11-9, the publication is Journal of the American Oil Chemists’ Society (1998), 75(6), 683-690, database is CAplus.

Static headspace and capillary gas chromatog., in combination with IR and mass spectrometry, were used to collect, sep., identify, and quantitate the oxidative and thermal decomposition products in two heated model compound triacylglycerols, oleic acid-esterified propoxylated glycerol (EPG-08 oleate) and triolein. The EPG-08 oleate and triolein were each heated in a deep-fat fryer at 192 ± 8°C for 12 h each day until the oil contained ≥20% polymeric material. Most of the volatile compounds identified in heated triolein and EPG-08 oleate were associated with the oxidative and thermal decomposition of oleates, such as short-chain alkanes, aldehydes, and alcs. The major volatile compounds (concentration >20 ppm) in heated EPG-08 oleate and triolein were heptane, octane, heptanal, octanal, trans-2-decenal, nonanal, and trans-2-undecenal. However, a few minor volatile compounds, not previously found in heated fats and oils, were identified in the heated EPG-08 oleate samples. These compounds included 1,2-propanediol, 1-hydroxy-2-propanone (hydroxyacetone), 1-acetoxy-2-propanone (acetoxyacetone), 2-ethyl-4-methyl-1,3-dioxolane, 2,2,4-trimethyl-1,3-dioxolane, 2-heptyl-4-methyl-1,3-dioxolane, and 4-methyl-2-octyl-1,3-dioxolanes. Alkyl-substituted dioxolanes have been found in heated Me linoleate.

Journal of the American Oil Chemists’ Society 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, SDS of cas: 1193-11-9.

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

Yang, Zhiwang published the artcilePreparation and application of SO₄^2-/SnO₂/SBA-15 solid acid catalyst for acetalization of cyclic ketones, Synthetic Route of 177-10-6, the publication is Cuihua Xuebao (2012), 33(5), 827-832, database is CAplus.

SO₄^2-/SnO₂/SBA-15 catalyst samples with different amounts of SnO₂ were prepared by a wetness impregnation method and characterized by X-ray diffraction, N₂ adsorption-desorption, and transmission electron microscopy. Their catalytic performance for the acetalization of 4-tert-butylcyclohexanone with glycol was investigated. The results showed that SBA-15 supported SO₄^2-/SnO₂ improved the catalytic activity markedly, which was caused by the increasing surface area of the sulfated tin oxide. The catalytic performance of SO₄^2-/20%SnO₂/SBA-15 for acetalization of several cyclic ketones with diols was also explored. Under the optimum conditions, a series of cyclic ketones such as cyclohexanone, 4-methylcyclohexanone, and 4-tert-butylcyclohexanone were well transformed into the corresponding products. The catalyst can be reused for several times without any significant loss in catalytic activity.

Cuihua Xuebao 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 C17H18N2O6, Synthetic Route of 177-10-6.

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

Du, Bin published the artcileStudy on catalytic synthesis of ethylene glycol cyclohexanone ketal by ferric solid superacid, Recommanded Product: 1,4-Dioxaspiro[4.5]decane, the publication is Liaoning Huagong (2012), 41(11), 1133-1135, database is CAplus.

Cyclohexanone ethylene glycol ketal was synthesized from cyclohexanone and ethylene glycol by using ferric solid superacid as the catalyst and cyclohexane as the water-carrying agent. The experiment results show that the ferric solid superacid has high activity and good stability; optimal synthesis conditions are as follows: molar ratio of cyclohexanone to ethylene glycol is 1:14, mass ratio of cyclohexanone to the catalyst is 32.8:1, volume ratio of cyclohexanone to cyclohexane is 2.08:1, and reaction time is 1 h. Under above conditions, the yield of cyclohexanone ethylene glycol ketal is over 86%.

Liaoning 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, Recommanded Product: 1,4-Dioxaspiro[4.5]decane.

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

Li, Ming published the artcileA study on the cataluminescence of propylene oxide on FeNi layered double hydroxides/graphene oxide, COA of Formula: C6H12O2, the publication is New Journal of Chemistry (2021), 45(26), 11823-11830, database is CAplus.

In this work, FeNi layered double hydroxides/graphene oxide (FeNi LDH/GO) was prepared, which exhibits excellent selective cataluminescent performance towards propylene oxide. The selectivity and sensitivity of the cataluminescence (CTL) reaction were investigated in detail. Moreover, the catalytic reaction mechanism, including the intermediate products and the conversion of reactants to products, was discussed based on both the exptl. and computational results. Furthermore, the proposed FeNi LDH/GO based CTL sensor was successfully applied for the determination of propylene oxide residue in fumigated raisins, which indicates extensive application potential for rapid food safety evaluation.

New Journal of Chemistry 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, COA of Formula: C6H12O2.

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

Xu, Yu-lin published the artcileSynthesis of cyclohexanone ethylene ketal using H₃PW₁₂O₄₀/SiO₂ as catalyst, Formula: C8H14O2, the publication is Jingxi Huagong (2013), 30(6), 614-617, 655, database is CAplus.

A new environmental friendly catalyst, H₃PW₁₂O₄₀/SiO₂ was prepared by the sol-gel method, and characterized by means of FTIR and XRD. Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene glycol using H₃PW₁₂O₄₀/SiO₂ as catalyst. The influence factors on the yield of cyclohexanone ethylene ketal were also discussed. The optimum conditions were identified: molar ratio of cyclohexanone to ethylene glycol is 1:1.3, mass fraction of catalyst to reactants is 1.2%, cyclohexane dosage is 3 mL and reaction time is 45 min. The yield of cyclohexanone ethylene ketal can reach 89.7% under the optimum conditions.

Jingxi 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 C13H10F2, Formula: C8H14O2.

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

Msutu, Ath’enkosi published the artcileAcetals: a new organocatalysis chemotype for one-pot enantioselective α-amination, Name: 1,4-Dioxaspiro[4.5]decane, the publication is Tetrahedron Letters (2014), 55(14), 2295-2298, database is CAplus.

Conditions are described for one-pot Bronsted acid and organocatalyzed enantioselective α-amination of acetals and associated functionalities. Of the organocatalysts screened, proline tetrazole gave the highest ee, while aqueous monochloroacetic acid proved to be the best Bronsted acid activator regarding minimizing racemization and maximizing product yield. The reaction opens up the way for using masked carbonyl functionalities in organocatalysis.

Tetrahedron Letters 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, Name: 1,4-Dioxaspiro[4.5]decane.

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

Senda, Yasuhisa published the artcileCarbon-13 NMR spectra of methyl-1,3-dioxolanes, Application In Synthesis of 1193-11-9, the publication is Bulletin of the Chemical Society of Japan (1977), 50(10), 2813-14, database is CAplus.

The ¹³C NMR spectra of 13 Me substituted 1,3-dioxolanes were measured. The carbon chem. shifts of the Me groups imply that the 1,3-transannular nonbonded interaction of the Me groups is negligible, except in the cases of 2,2,4-trimethyl- and 2,2,4,5-tetramethyl-1,3-dioxolanes.

Bulletin of the Chemical Society of Japan 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 C4H6N2, Application In Synthesis of 1193-11-9.

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

Likhterov, V. R. published the artcile1,3-Dioxolanes. I. Chlorination of some cyclic ketals of acetone and vicinal glycols, Product Details of C6H12O2, the publication is Zhurnal Organicheskoi Khimii (1968), 4(1), 69-72, database is CAplus.

Chlorination of 2,2,4-trimethyl-1,3-dioxolane (I), 2,2-dimethyl-4-chloromethyl-1,3-dioxolane, 2,2-dimethyl-4-methoxymethyl-1,3-dioxolane, 2,2-dimethyl-4-acetoxymethyl-1,3-dioxolane (II), and 2,2-dimethyl-1,3-dioxolane is described. The exothermic reaction was carried out with cooling at 15-20° by passing Cl through the dioxolane followed by distillation The starting dioxolanes were all known previously with the exception of II, b2 71-2°. Chlorination gave 2-chloromethyl-2-methyl-4-(R-substituted)-1,3-dioxolanes (III) (R, % yield, b.p./mm., and n20D given): Me, 73.5, 53-4°/15, 1.4352; CH2Cl, 78.3, 71-2°/2, 1.4701; MeOCH2, 71.3, 69-71°/2, 1.4486; MeCO2CH2, 72.0, 103-5°/2, 1.4535; H, 76.0, 60-3°/20, 1.4450. Alk. hydrolysis of III (R = MeCO2CH2) gave III (R = CH2OH), b3 96-8°, n20D 1.4688 (containing 46-50% cis- and 50-4% trans-isomer). Reaction of III (R = CH2Cl) with MeCO2K gave III (R = MeCO2CH2). Action of PCl5 on III (R = CH2OH) gave III (R = CH2Cl). Hydrolysis of III gave MeCOCH2Cl, identified by the m.p. of its 2,4-dinitrophenylhydrazone derivative

Zhurnal Organicheskoi Khimii 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

Lu, Ting published the artcileFour Strandberg-type polyoxometalates with organophosphine centre decorated by transition metal-2,2′-bipy/H₂O complexes, Recommanded Product: 1,4-Dioxaspiro[4.5]decane, the publication is Journal of Solid State Chemistry (2017), 52-57, database is CAplus.

Four inorganic-organic hybrid compounds composed of Strandberg-type organophosphomolybdate anion [(C₆H₅PO₃)₂Mo₅O₁₅]^4- (abbreviated as (PhP)₂Mo₅) and transition metal (TM)-2,2′-bipy/H₂O complex units, namely [(TM(H₂O)(bipy))₂(C₆H₅PO₃)₂Mo₅O₁₅]_n (TM = Co, (1); Ni, (2)), [(Cu(bipy)₂)₂(C₆H₅PO₃)₂Mo₅O₁₅]·2H₂O (3) and [(Zn(bipy)(μ-OH))₂(Zn(bipy)₂(C₆H₅PO₃)₂Mo₅O₁₅)₂]·3H₂O (4) (bipy = 2,2′-bipyridine), were successfully constructed under hydrothermal conditions, and their structures were determined by single crystal x-ray diffraction anal. and spectroscopic methods. The central heteroatoms in these polyoxometalates (POMs) are all organophosphine (RP) groups. Compound 1 and compound 2 are isostructural (PhP)₂Mo₅-based TM-coordination polymers with the two-dimensional layer frameworks. In compound 3, the bi-supporting structure containing one (PhP)₂Mo₅ unit and two [Cu(bipy)₂]²⁺ cations. For compound 4, it can be regarded as a dimer of two bi-supporting {Zn(bipy)₂(PhP)₂Mo₅Zn(bipy)} clusters that were connected by two μ-OH groups. The acid-catalytic activities and fluorescence properties of the four hybrids have been investigated.

Journal of Solid State Chemistry 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, Recommanded Product: 1,4-Dioxaspiro[4.5]decane.

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

Rigo, Davide published the artcileAcid-Catalyzed Reactions of Isopropenyl Esters and Renewable Diols: A 100% Carbon Efficient Transesterification/Acetalization Tandem Sequence, from Batch to Continuous Flow, Recommanded Product: 2,2,4-Trimethyl-1,3-dioxolane, the publication is ACS Sustainable Chemistry & Engineering (2019), 7(23), 18810-18818, database is CAplus.

A new acid-catalyzed tandem sequence was investigated for the upgrading of renewable 1,2-diols such as propylene glycol (PG) and ethylene glycol (EG), with isopropenyl esters. For example, at 50 °C and in the presence of Amberlyst-15, the reaction of PG with nontoxic isopropenyl acetate allowed an initial irreversible monotransesterification of the diol, releasing acetone which then promoted acetalization on a second mol. of the glycol. The overall protocol was 100% carbon efficient, affording water as the sole byproduct. The reaction scope was extended to higher homologs of enol esters as isopropenyl-octanoate and phenylbutyrate. Addnl., the tandem sequence was successfully transferred in the continuous-flow (CF) mode where the catalyst (Amberlyst-15) could be used virtually indefinitely without loss of performance, and the solvent (THF or CPME) was quant. recovered and reused. Under CF conditions, the reaction of PG with isopropenyl acetate could be run at 30 °C and atm. pressure with a (nonoptimized) productivity up to 9.7 mmol g_cat^-1 h^-1, 3 times higher than that achieved in the batch mode. When ethylene glycol was used, a lower tandem selectivity was observed due to predominance of transesterification products, mono- and diesters, over the acetal compound A 100% carbon efficient upgrading of renewable 1,2-diols through tandem monotransesterification and acetalization reactions mediated by isopropenyl esters is presented.

ACS Sustainable Chemistry & Engineering 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