Tag: M.W=100-150

Peng, Fang published the artcileCatalytic application of H₄SiW₁₂O₄₀/TiO₂-SiO₂ in synthesis of acetals and ketals, Recommanded Product: 1,4-Dioxaspiro[4.5]decane, the publication is Applied Mechanics and Materials (2014), 320-325, database is CAplus.

The environmental friendly catalyst, H₃SiW₁₂O₄₀/TiO₂-SiO₂ was prepared by the impregnation method. The synthesis of cyclohexanone glycol ketal was as the probe reaction and investigated the different influences on the catalytic activity of H₄SiW₁₂O₄₀/TiO₂-SiO₂ by the quality of the carrier TiO₂-SiO₂ ratio, load of heteropoly acid, catalyst preparation conditions of the activation time and the calcination temperature, etc. The results showed the best condition for the preparation of the catalyst is the mass ratio of TiO₂ and SiO₂ is 1: 5, the load ratio of H₄SiW₁₂O₄₀ is 10 %, calcination temperature is 300 °C and the roasting time is 3.0 h. Under the condition of the molar ratio of aldehydes (ketones) and glycol (1,2-propanediol) is 1: 1.6, the mass percent of the catalyst is 1.4 %, and the reaction time of 70 min, the yields of eight kinds acetal (ketal) are 71.6 %∼ 90.5 %.

Applied Mechanics and Materials 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

Minakawa, Maki published the artcileDriving an equilibrium acetalization to completion in the presence of water, Related Products of dioxole, the publication is RSC Advances (2014), 4(69), 36864-36867, database is CAplus.

Formation of an acetal from a carbonyl substrate by condensation with an alc. is a classical reversible equilibrium reaction in which the water formed must be removed to drive the reaction to completion. A new method has been developed for acetalization of carbonyl substrates by diols in the presence of water. Complexation of poly(4-styrenesulfonic acid) with poly(4-vinylpyridine) generates a catalytic membrane of polymeric acid at the interface between two parallel laminar flows in a microchannel of a microflow reactor. The catalytic membrane provides a permeable barrier between the organic layer and water-containing layer in the reaction, and permits discharge of water to the outlet of the microreactor to complete the acetalization. Condensation of a variety of carbonyl substrates with diols proceeded in the presence of water in the microflow device to give the corresponding acetals in yields of up to 97% for residence times of 19 to 38 s.

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, Related Products of dioxole.

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

Yamada, Kenichi published the artcileIntroduction of Functionalized C1, C2, and C3 Units to Imines through the Dimethylzinc-Air-Initiated Radical Addition, Safety of 2,2,4-Trimethyl-1,3-dioxolane, the publication is Journal of Organic Chemistry (2004), 69(5), 1531-1534, database is CAplus and MEDLINE.

Introduction of functionalized C1, C2, and C3 units to imines was achieved by using the dimethylzinc-air-initiated α-alkoxyalkyl radical addition as a key reaction. The addition to a C:N double bond chemoselectively occurred in the presence of a C:O double bond, which is one of the advantages of this radical addition reaction over ionic addition reactions. The dimethylzinc-mediated reaction of 4-methyl-N-(phenylmethylene)benzenesulfonamide (I) with 2,2-dimethyl-1,3-dioxolane gave rel-N-[(R)-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl](phenyl)methyl]-4-methylbenzenesulfonamide (II) as the major product. Hydrolysis of II gave rel-N-[(2R,3R)-2,3-dihydroxy-1-phenylpropyl]-4-methylbenzenesulfonamide (III).

Journal of Organic 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 C12H14S, Safety of 2,2,4-Trimethyl-1,3-dioxolane.

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

Zong, Yang published the artcileHighly efficient acetalization and ketalization catalyzed by cobaloxime under solvent-free condition, Quality Control of 177-10-6, the publication is Catalysts (2018), 8(2), 48/1-48/10, database is CAplus.

An efficient catalytic system was developed for the acetalization and ketalization of carbonyl compounds with polyhydric alcs. under mild solvent-free conditions. In the presence of 0.1 mol% CoCl₂ and 0.2 mol% dimethylglyoxime at 70° under 5 KPa pressure for 1 h, 95.3% conversion of cyclohexanone and 100% selectivity of the corresponding cyclic ketal could be obtained, where TOF reached as high as 953 h^-1. It is proposed that the in situ generated planar tetracoordinate cobaloxime played the key role in the catalytic cycle and was responsible for the excellent catalytic performance.

Catalysts 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 C37H30ClIrOP2, Quality Control of 177-10-6.

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

Gong, Wenpeng published the artcileProgress of research on solid acid catalysts for synthesis of cyclohexanone ethylene ketal, Category: dioxole, the publication is Jingxi Shiyou Huagong Jinzhan (2013), 14(2), 29-33, database is CAplus.

A review. The progress of the research on the application of solid super acid, heteropoly salt, supported heteropoly salt and mol. sieve catalyst in the catalytic synthesis of cyclohexanone ethylene ketal is summarized, and the future development of this application is discussed in this paper.

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, Category: dioxole.

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

Du, Xin published the artcileThe construction of a series of hierarchical MWW-type zeolites and their catalytic performances for bulky aldol condensation, Application In Synthesis of 177-10-6, the publication is Microporous and Mesoporous Materials (2018), 117-124, database is CAplus.

The construction of hierarchical pore systems from the post-synthesis modifications of lamellar zeolite catalysts have attracted wide interests to solve the diffusion limitations in the catalytic application of zeolite catalysts. Herein, the interlayer expanded MWW with different interlayer spacing were obtained, based on the post-synthesis modifications of a swollen multilamellar MWW precursor, in which the MWW layers were pillared by cetyltrimethylammonium bromide (CTAB) surfactant with 25 Å interlayer distance. The direct calcination and the post-synthesis modifications led to zeolite catalysts with more open pore structures (hierarchical, interlayer expanded and pillared), which were evidenced by a series of characterizations, such as PXRD, TEM, N₂ adsorption-desorption etc. Moreover, the catalytic performances of the hierarchical MWW (H-MWW), interlayered expanded zeolite IEZ-MWW and Pillared-MWW catalysts were compared with 3D-MWW and ZSM-5 in the condensation of cyclohexanone with glycol or benzaldehyde with 1-pentanol. The catalysts prepared in this study show better catalytic activities than 3D-MWW and ZSM-5.

Microporous and Mesoporous Materials 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 In Synthesis of 177-10-6.

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

Shao, Linjun published the artcileSulfonic groups functionalized preoxidated polyacrylonitrile nanofibers and its catalytic applications, Application In Synthesis of 177-10-6, the publication is Applied Catalysis, A: General (2012), 133-137, database is CAplus.

A SO₃H-bearing nanofiber mat was synthesized and investigated as a novel heterogeneous acid catalyst. Preoxidated polyacrylonitrile nanofiber mat was prepared via electrospinning and heat treatment, and then reacted with chlorosulfuric acid to introduce the sulfonic groups. The nanofiber mat owned high acidity of 2.99 mmol/g. The preoxidation and sulfonation were examined by FT-IR spectroscopy, elemental anal. and X-ray diffraction spectroscopy (XRD). The fiber morphologies were characterized by SEM (SEM). The catalytic activities and reuse of the prepared nanofiber mat solid acid catalyst have been evaluated for the acetalization and esterification. The regular fiber mat structure could significantly facilitate the recovery and reuse of the catalyst. The excellent catalytic performance and easy recycling made the novel fiber mat solid acid hold great potential for the green chem. processes.

Applied Catalysis, A: General 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 C7H13NO2, Application In Synthesis of 177-10-6.

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

Shao, Lin-Jun published the artcileSynthesis of melamine-formaldehyde resin functionalized with sulfonic groups and its catalytic activities, HPLC of Formula: 177-10-6, the publication is Chemical Papers (2014), 68(7), 983-988, database is CAplus.

Spherical melamine-formaldehyde resin (MFR) particles were synthesized using the condensation reaction of melamine and formaldehyde with PEG-2000 as an additive. After thermal treatment at 200°C and then sulfonation by chlorosulphuric acid, an MFR-supported strong acid catalyst (SMFR) was prepared with an acidity of 3.23 mmol g^-1. This new acid catalyst was evaluated in the reactions of esterification and acetalization, with the results indicating that this novel acid catalyst was highly efficient in the traditional acid-catalyzed reaction. Its high activity, stability and reusability give it great potential for “green” chem. processes.

Chemical Papers 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 C5H12O2, HPLC of Formula: 177-10-6.

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

Peng, Fang published the artcileCatalytic application of H₄SiW₁₂O₄₀/TiO₂-SiO₂ in synthesis of acetals and ketals, Recommanded Product: 1,4-Dioxaspiro[4.5]decane, the publication is Applied Mechanics and Materials (2014), 320-325, database is CAplus.

The environmental friendly catalyst, H₃SiW₁₂O₄₀/TiO₂-SiO₂ was prepared by the impregnation method. The synthesis of cyclohexanone glycol ketal was as the probe reaction and investigated the different influences on the catalytic activity of H₄SiW₁₂O₄₀/TiO₂-SiO₂ by the quality of the carrier TiO₂-SiO₂ ratio, load of heteropoly acid, catalyst preparation conditions of the activation time and the calcination temperature, etc. The results showed the best condition for the preparation of the catalyst is the mass ratio of TiO₂ and SiO₂ is 1: 5, the load ratio of H₄SiW₁₂O₄₀ is 10 %, calcination temperature is 300 °C and the roasting time is 3.0 h. Under the condition of the molar ratio of aldehydes (ketones) and glycol (1,2-propanediol) is 1: 1.6, the mass percent of the catalyst is 1.4 %, and the reaction time of 70 min, the yields of eight kinds acetal (ketal) are 71.6 %∼ 90.5 %.

Applied Mechanics and Materials 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

Mykhailiuk, Pavel K. published the artcile1-Amino-4,4-difluorocyclohexanecarboxylic acid as a promising building block for drug discovery: design, synthesis and characterization, HPLC of Formula: 177-10-6, the publication is Tetrahedron (2013), 69(20), 4066-4075, database is CAplus.

1-Amino-4,4-difluorocyclohexanecarboxylic acid has been designed as a fluorinated analog of the pharmacol. relevant 1-aminocyclohexanecarboxylic acid. The synthesis has been performed in three steps from a com. available material in 22% overall yield. An impact of fluorine atoms on conformation, lipophilicity, acidity and fluorescent properties of the amino acid has been studied. Various practical applications of the obtained compound are suggested.

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 C8H14O2, HPLC of Formula: 177-10-6.

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