Category: Dioxole

Wang, Hong-she published the artcileSynthesis of vanillin 1,2-propylene glycol acetal catalyzed by silica supported perchloric acid, Name: 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, the publication is Yingyong Huagong (2013), 42(2), 242-244, database is CAplus.

Vanillin 1,2-propylene glycol acetal was synthesized through the condensation of vanillin with 1,2-propylene glycol using silica supported perchloric acid (HClO₄/SiO₂) as a catalyst. The effects of the molar ratio of reactant, the amount of catalyst, reaction temperature and reaction time on the yield of product were discussed. The results showed that the optimized reaction conditions were as follows: the molar ratio of vanillin (0.1 mol) to 1,2-propylene glycol (0.16 mol) was 1:1.6, the amount of catalyst was 1.5 g, reaction temperature was 80°C, and the reaction time was 45 min. Under the optimum conditions mentioned above, the yield of vanillin 1,2-propylene glycol acetal reached more than 87.1%. HClO₄/SiO₂ as a heterogeneous catalyst had many advantages of high thermal stability, ease of preparation and reusability.

Yingyong Huagong published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C25H47NO8, Name: 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol.

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

Yu, Hai-Feng published the artcileChemoselective and odorless transthioacetalization of acetals using -oxo-ketene dithioacetals as thiol equivalents, Category: dioxole, the publication is Synthetic Communications (2013), 43(9), 1280-1286, database is CAplus.

Using α-oxo-ketene dithioacetals as odorless thiol equivlents, an efficient and odorless transthioacetalization of acetals has been developed. In the presence of MeCOCl in MeOH, the cleavage of commences to generate thiols at both room and reflux temperatures, and the generated thiols then react with acetals to give correspecting thioacetals e. g., I in good yield. This transthioacetalization is characterized by mild reaction conditions, simple procedure, good yields, and perfect chemoselectivity.

Synthetic Communications 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 C9H6FNO2, Category: dioxole.

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

Kandasamy, Sabariswaran published the artcileHydrothermal liquefaction of microalgae using Fe₃O₄ nanostructures as efficient catalyst for the production of bio-oil: Optimization of reaction parameters by response surface methodology, Related Products of dioxole, the publication is Biomass and Bioenergy (2019), 105417, database is CAplus.

The aim of the present work was focused on optimizing the hydrothermal liquefaction (HTL) of Spirulina platensis catalyzed by Fe₃O₄ nanostructures to enhance the bio-oil yield and quality of bio-oil using response surface methodol. (RSM). The structural morphol. and crystalline nature of the synthesized catalyst was determined using a scanning electron microscope (SEM), high resolution transmission electron microscopy (HR-TEM) and X-ray powder diffraction (XRD). Three of the vital reaction parameters such as temperature, holding time and catalyst dosage were optimized through central composite design. A maximum bio-oil yield of 32.33% was observed for the high temperature at 320°C, 0.75 g of catalyst dosage and 37 min of resident time. The maximum conversion was found at a lower temperature of 272°C, the bio-oil yield of 27.66% was obtained with 0.45 g of catalyst dosage and 24 min of holding time which is an energy efficient optimum condition. The maximum bio-oil yield was influenced at a lower temperature due to the high catalytic activity. While compared to higher temperatures were not much influence was observed It clearly states that the catalyst dosage playing a critical role in the lower temperature HTL reaction. GC-MS and FT-IR anal. of the produced bio-oil exhibits significant characteristics for biofuel applications. The Fe₃O₄ catalyst was recyclable for up to eight repeated cycles and constant bio-oil yield for the last four cycles. It shows the excellent reproduction ability towards HTL of Spirulina sp.

Biomass and Bioenergy 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

An, Shunyong published the artcileSynthesis optimization and kinetics for ketalization of cyclohexanone with ethylene glycol in a zeolite membrane reactor, HPLC of Formula: 177-10-6, the publication is Shiyou Xuebao, Shiyou Jiagong (2014), 30(3), 527-535, database is CAplus.

Ketalization of cyclohexanone with ethylene glycol was investigated in a pervaporation (PV) membrane reactor by using high-flux zeolite T membrane and zeolite H-β catalyst. A kinetic model was built for the PV-aided ketalization based on the assumption of second-order reaction, and the exptl. data were compared with the model predictions. The molar ratio of cyclohexanone to ethylene glycol and catalyst amount for the reaction occurring in membrane reactor were optimized, meanwhile, the reusability of zeolite T membrane and the solid catalyst in the ketalization were investigated. The conversion of cyclohexanone increased from 64.3% to almost completion due to water removal from the reaction system by the aid of PV process. The reaction could be carried out under the close theor. ratios of reagents, so that the reaction atom economy was enhanced. Zeolite T membrane was stable in reaction mixture and showed a good reusability for the reaction.

Shiyou Xuebao, Shiyou Jiagong 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, HPLC of Formula: 177-10-6.

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

Yu, Shuangjian published the artcileEffects of dynamic covalent bond multiplicity on the performance of vitrimeric elastomers, HPLC of Formula: 68527-74-2, the publication is Journal of Materials Chemistry A: Materials for Energy and Sustainability (2020), 8(39), 20503-20512, database is CAplus.

It is still a challenge to integrate multiple dynamic covalent bonds (DCBs) into one network, so the effects of DCB multiplicity on the performance of covalent adaptable networks (CANs) are still unclear. In this contribution, based on the versatility of vanillin chem., we realized the construction of CANs containing different DCB multiplicities, and thus the influences of DCB multiplicity on the vitrimeric performance of the networks are fairly investigated. It turns out that, with increasing DCB multiplicity, the relaxation time of the networks can be reduced significantly because the dynamic performance of the CANs with double or triple DCBs is determined by not only the activation energy but the synergistic effect of different DCBs. A plausible method was first proposed to quantify the synergistic effect of DCB multiplicity. We envisage that the disclosed findings will provide significant insight into the optimized design of CANs with tunable dynamic performance.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C7H7BrN2O2, HPLC of Formula: 68527-74-2.

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

Liu, Hemei published the artcilePreparation and application of zeolite based on the novel binuclear aromatic quaternary ammonium template, Related Products of dioxole, the publication is Shandong Huagong (2014), 43(11), 113-117, database is CAplus.

A novel binuclear aromatic quaternary ammonium template was synthesized, and its structure was characterized by NMR and IR. On this basis, a new type of ZSM-5 zeolite with MFI-type diffraction peaks was prepared The ZSM-5 zeolite was characterized by XRD, SEM, NH₃-TPD and N₂-adsorption-desorption. The novel HZSM-5 zeolite’s catalytic performance in condensation reaction of ethylene glycol and cyclohexanone was studied in detail. Then, the influences of zeolite dosage, reaction time and temperature on the Ketalization were investigated in order to optimize the reaction condition. Furthermore, the recycling of mol. sieve was organized under optimal reaction conditions. Subsequently, the HZSM-5 zeolite was modified by chlorosulfonic acid in order to improve the catalytic activity. After that, the ketalization catalyzed by the modified HZSM-5 zeolite under the optimal reaction conditions was investigated. The results revealed that the zeolite had high catalytic activity, good stability, easy recycling, easy separation of catalyst and few pollution, which can be used as an efficient and environmentally friendly green solid acid.

Shandong 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, Related Products of dioxole.

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

Fang, Lin published the artcileCarbon-coated mesoporous silica functionalized with sulfonic acid groups and its application to acetalization, COA of Formula: C8H14O2, the publication is Cuihua Xuebao (2013), 34(5), 932-941, database is CAplus.

The inner surface of mesoporous silica SBA-15 was coated by a homogeneous polycyclic carbon layer through controlled carbonization of furfuryl alc. The composite was subsequently functionalized with sulfonic acid (-SO₃H) groups to form a strong solid acid material, with a tunable acid site d. in the range of 0.38-0.84 mmol/g by varying the thickness of the carbon layer. Structural anal. and reaction data revealed that the solid acid catalyst exhibited high reactivity towards the acetalization of aldehydes or ketones with alcs. because of the uniform carbon coating of the mesopores, high acid site d., and its mech. stability.

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 C8H14O2, COA of Formula: C8H14O2.

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

Ding, Yuan-sheng published the artcileSynthesis of vanillin 1,2-propylene glycol acetal catalyzed by Keggin compound [(CH₂)₅NH₂]₄SiMo₁₂O₄₀, Safety of 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, the publication is Jilin Huagong Xueyuan Xuebao (2014), 31(5), 21-23, 31, database is CAplus.

Vanillin^1,2-propylene glycol acetal was synthesized from Vanillin and^1,2-propylene glycol using [(CH₂)₅NH₂]₄ SiMo₁₂O₄₀ as catalyst and benzene as water stripping agent. The effects of factors on yield of product, such as molar ratio of the reactant, catalyst dosage and reaction time were investigated. The exptl. results showed that [(CH₂)₅NH₂]₄ SiMo₁₂O₄₀ was catalyst with very good catalytic activity, and the catalyst was reused for 5 times. The preferential conditions were: based on 15.2g(0.1mol) of vanillin, the molar ratio of vanillin to^1,2-propylene glycol to n[(CH₂)₅NH₂]₄ SiMo₁₂O₄₀ 1 : 1.50 : 0.05; the amount of benzene as water stripping agent 20mL; and the reaction time 2.0 h. The yield could achieve above 88%.

Jilin Huagong Xueyuan Xuebao published new progress about 68527-74-2. 68527-74-2 belongs to dioxole, auxiliary class Dioxolane,Benzene,Phenol,Ether, name is 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol, and the molecular formula is C11H14O4, Safety of 2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol.

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

Ma, Xiao-Pan published the artcileNovel flavones from the root of Phytolacca acinosa ROXB., Safety of 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, the publication is Chemistry & Biodiversity (2017), 14(12), n/a, database is CAplus and MEDLINE.

Two new flavones, 6,7-methylenedioxy-4-hydroxypeltogynan-7′-one (1), cochliophilin B (2), as well as 2 known ones, cochliophilin A (3) and 6-methoxy-7-hydroxyflavone (4), were isolated from the ethanol extract of the root of P. acinosa ROXB. Compound 1 was a flavanol framework with one δ-lactone unit, which is rather rare in Nature. The structures of the new compounds were determined on the basis of extensive spectroscopic (IR, MS, and 1D- and 2D-NMR) analyses; the absolute configuration of 1 was established by comparing exptl. and calculated electronic CD spectra. The structures of the known compounds were fixed by comparison with literature data. Compounds 2 and 4 showed modest inhibitory activities against the BEL-7402 cell line, with IC₅₀ values of 28.22 and 39.16 μM, resp.

Chemistry & Biodiversity published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C16H10O5, Safety of 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one.

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

Zhang, Wei published the artcileChemical constituents of Kochia scoparia, Related Products of dioxole, the publication is Zhongyaocai (2013), 36(6), 921-924, database is CAplus.

The chem. constituents of Kochia scoparia were investigated. The constituents of EtOAc-soluble portion were isolated and purified by silica gel column chromatog. Their structures were identified by spectral features. Twelve compounds were isolated and identified as tectorigenin (1), pratensein (2), 5,2′-dihydroxy-6,7-methylenedioxyisoflavone (3), iriflogenin (4), 5-hydroxy-6,7-methylenedioxyflavone (5), ferulic acid (6), N-trans-feruloylmethoxytyramine (7), N-trans-feruloyltyramine (8), stigmasterol (9), oleanolic acid (10), β-stigmasterol (11) and daucosterol (12). Compounds 1-9 are isolated from this plant for the first time.

Zhongyaocai published new progress about 110204-45-0. 110204-45-0 belongs to dioxole, auxiliary class Flavonoids, name is 9-Hydroxy-6-phenyl-8H-[1,3]dioxolo[4,5-g]chromen-8-one, and the molecular formula is C28H41N2P, Related Products of dioxole.

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