Day: February 22, 2023

Synthesis and Biological Activity of 7,8,9-Trideoxy- and 7R Des-THP-Peloruside A was written by Wullschleger, Christoph W.;Gertsch, Juerg;Altmann, Karl-Heinz. And the article was included in Chemistry – A European Journal in 2013.Quality Control of ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol) This article mentions the following:

The stereoselective syntheses of 7,8,9-trideoxypeloruside A I and a monocyclic peloruside A analog lacking the entire tetrahydropyran moiety II are described. The syntheses proceeded through the PMB-ether of an ω-hydroxy β-keto aldehyde as a common intermediate which was elaborated into a pair of diastereomeric 1,3-syn and -anti diols by stereoselective Duthaler-Hafner allylation and subsequent 1,3-syn or anti reduction One of these isomers was further converted into a tetrahydropyran derivative in a high-yielding Prins reaction, to provide the precursor for bicyclic analog I. Downstream steps for both syntheses included the substrate-controlled addition of a vinyl lithium intermediate to an aldehyde, thus connecting the peloruside side chain to C15 (C13) of the macrocyclic core structure in a fully stereoselective fashion. In the case of monocyclic II macrocyclization was based on ring-closing olefin metathesis, while bicyclic I was cyclized through Yamaguchi-type macrolactonization. The macrolactonization step was surprisingly difficult and was accompanied by extensive cyclic dimer formation. Peloruside A analogs I and II inhibited the proliferation of human cancer cell lines in vitro with micromolar and sub-micromolar IC₅₀ values, resp. The higher potency of I highlights the importance of the bicyclic core structure of peloruside A for nM biol. activity. In the experiment, the researchers used many compounds, for example, ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol) (cas: 93379-49-8Quality Control of ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol)).

((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol) (cas: 93379-49-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Quality Control of ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol)

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Antimony Oxide Hydroxide Ethanedisulfonate: a Cationic Layered Metal Oxide for Lewis Acid Applications was written by Swanson, Claudia H.;Shaikh, Harris A.;Rogow, David L.;Oliver, Allen G.;Campana, Charles F.;Oliver, Scott R. J.. And the article was included in Journal of the American Chemical Society in 2008.Reference of 126-39-6 This article mentions the following:

We have discovered a rare example of a cationically charged inorganic material. The layered structure is an example outside the extensively studied isostructural set of anionic clays/layered double hydroxides and our previously reported lead fluoride nitrate. For the present compound, the antimony oxide hydroxide layers are pos. charged and are templated by anionic alkylenedisulfonate. The organic mols. are only bonded electrostatically to the layers with sulfonate oxygen to antimony distances beyond the covalent range. The material catalyzes a ketal formation reaction as a Lewis acid without the need for drying the solvent before the reaction or a nonaqueous medium such as toluene. The catalyst is heterogeneous and is completely recovered after the catalysis for reapplication. In the experiment, the researchers used many compounds, for example, 2-Ethyl-2-methyl-1,3-dioxolane (cas: 126-39-6Reference of 126-39-6).

2-Ethyl-2-methyl-1,3-dioxolane (cas: 126-39-6) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Reference of 126-39-6

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Nickel-catalyzed, regio- and enantioselective benzylic alkenylation of olefins with alkenyl bromide was written by Liu, Jiandong;Gong, Hegui;Zhu, Shaolin. And the article was included in Angewandte Chemie, International Edition in 2021.Product Details of 15186-48-8 This article mentions the following:

A NiH-catalyzed migratory hydroalkenylation reaction of olefins with alkenyl bromides has been developed, affording benzylic alkenylation products with high yields and excellent chemoselectivity. The mild conditions of the reaction preclude olefinic products from undergoing further isomerization or subsequent alkenylation. Catalytic enantioselective hydroalkenylation of styrenes was achieved by using a chiral bisoxazoline ligand. In the experiment, the researchers used many compounds, for example, (R)-2,2-Dimethyl-1,3-dioxolane-4-carbaldehyde (cas: 15186-48-8Product Details of 15186-48-8).

(R)-2,2-Dimethyl-1,3-dioxolane-4-carbaldehyde (cas: 15186-48-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Product Details of 15186-48-8

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Asymmetric Diels-Alder reaction of 1-(R)-p-tolylsulfinyl-3-penten-2-one with cyclopentadiene catalyzed by a chiral titanium reagent was written by Pei, Wen;Wada, Eiji;Kanemasa, Shuji. And the article was included in Chinese Chemical Letters in 1997.Related Products of 171086-52-5 This article mentions the following:

Double asym. Diels-Alder reaction of 1-(R)-p-tolylsulfinyl-3-penten-2-one with cyclopentadiene using a chiral titanium reagent was performed. The diastereoselectivity dependent on the size of aryl substituent involved in the chiral ligands was discussed. Absolute configuration of the cycloadducts was confirmed. Dramatic reversal of selectivity is observed In the experiment, the researchers used many compounds, for example, ((4S,5S)-2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(di(naphthalen-1-yl)methanol) (cas: 171086-52-5Related Products of 171086-52-5).

((4S,5S)-2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(di(naphthalen-1-yl)methanol) (cas: 171086-52-5) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Related Products of 171086-52-5

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Catalytic synthesis of homoallyloxyalcohols and 1,2-bis(homoallyloxy)ethanes through ring-opening allylation of cyclic acetals with allylsilanes over solid acids was written by Motokura, Ken;Yoneda, Hirokazu;Miyaji, Akimitsu;Sakamoto, Yasuharu;Baba, Toshihide. And the article was included in Catalysis Science & Technology in 2011.Formula: C4H7ClO2 This article mentions the following:

Ring-opening allylation of cyclic acetals with allylsilanes afforded silyl ethers using a silica-alumina catalyst. For example, the reaction of 2-phenyl-1,3-dioxolane with allyltrimethylsilane gave the corresponding silyl ether in 83% yield. After the allylation, addition of water to the reaction mixture allowed hydrolysis of the silyl ether to afford the homoallyloxyalc. in 77% yield based on the acetal used. The reaction pathway of the silica-alumina-catalyzed allylation was examined Solid-state ¹³C and ²⁹Si NMR analyses revealed the generation of SiMe₃ groups on the silica-alumina surface. The part of the (surface)-O-SiMe₃ groups was found to be an active site for the allylation reaction. During the silica-alumina-catalyzed allylation, a small amount of 1,2-bis(homoallyloxy)ethane formed as a co-product. The selectivity toward the 1,2-bis(homoallyloxy)ethane increased from 7% to 60% using H⁺-montmorillonite instead of silica-alumina. Detailed reaction pathways for the syntheses of 1,2-bis(homoallyloxy)ethanes were also investigated. In the experiment, the researchers used many compounds, for example, 2-Chloromethyl-1,3-dioxolane (cas: 2568-30-1Formula: C4H7ClO2).

2-Chloromethyl-1,3-dioxolane (cas: 2568-30-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Formula: C4H7ClO2

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Recent advances in the valorization of biodiesel by-product glycerol to solketal was written by Ao, Supongsenla;Rokhum, Samuel Lalthazuala. And the article was included in Journal of Chemistry in 2022.Application of 100-79-8 This article mentions the following:

The exponential rise of the biodiesel production has resulted in a considerable amount of glycerol as a byproduct, which must be valorized to ensure the sector’s long-term viability. As a result, cost-effective glycerol conversions for significant value-added chems. are essential for the biodiesel production in the long run. Solketal, a glycerol byproduct, is obtained as a potential fuel additive in the biodiesel industry. Recently, several heterogeneous acid-catalysts stand out as a promising catalyst for solketal production where biomass-based catalyst gained attraction owing to their biodegradability, eco-friendly, and abundant availability. Furthermore, magnetic nanoparticles-derived catalysts along with sulfonated functionalized catalyzed, zeolites, resins, enzymic, etc. have proved their efficiency in solketal production In this review, a wider study on the recent advances of the catalysts has been discussed along with their preparation, various reaction parameters, its application, and efficiency for biodiesel industry. this study opens up incredible prospects for us to use renewable energy sources, which will benefit the industry, the environment, and the economy. In the experiment, the researchers used many compounds, for example, (2,2-Dimethyl-1,3-dioxolan-4-yl)methanol (cas: 100-79-8Application of 100-79-8).

(2,2-Dimethyl-1,3-dioxolan-4-yl)methanol (cas: 100-79-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Application of 100-79-8

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Preparation and catalytic application of SO₄^2-/SnO₂-WO₃/KIT-6 complex solid acid was written by Chen, Wen-long;Liang, Xi-xi;Xu, Xue-qing;Lei, Cheng;Jia, Na;Yang, Zhi-wang. And the article was included in Guangzhou Huagong in 2016.Electric Literature of C8H14O2 This article mentions the following:

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. In the experiment, the researchers used many compounds, for example, 1,4-Dioxaspiro[4.5]decane (cas: 177-10-6Electric Literature of C8H14O2).

1,4-Dioxaspiro[4.5]decane (cas: 177-10-6) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Electric Literature of C8H14O2

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Stereoselective Hydrosilylation of Enals and Enones Catalysed by Palladium Nanoparticles was written by Benohoud, Meryem;Tuokko, Sakari;Pihko, Petri M.. And the article was included in Chemistry – A European Journal in 2011.Product Details of 177-10-6 This article mentions the following:

A highly versatile and efficient hydrosilylation method by palladium nanoparticle catalysis allows the direct and chemoselective synthesis of enolsilanes, e.g. I (R = Bn, t-Bu, Boc-N), of high isomeric purity, saturated aldehydes or ketones, e.g. 2-methyl-3-phenylpropanal and 2-nonanone, or the corresponding saturated acetals, e.g. II, from α,β-unsaturated aldehydes or ketones. The choice of the product is determined by simply switching the solvent from THF to mixtures of THF/water or THF/alc. In the experiment, the researchers used many compounds, for example, 1,4-Dioxaspiro[4.5]decane (cas: 177-10-6Product Details of 177-10-6).

1,4-Dioxaspiro[4.5]decane (cas: 177-10-6) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Product Details of 177-10-6

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

The chemical and metabolite profiles of Gualou-Xiebai-Banxia decoction, a classical traditional Chinese medicine formula, by using high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry and in-house software was written by Xiang, Zheng;Wang, Yuzhen;Liu, Shundi. And the article was included in Journal of Ethnopharmacology in 2022.Category: dioxole This article mentions the following:

Gualou-Xiebai-Banxia decoction (GXBD) was a classical traditional Chinese medicine formula for the treatment of coronary heart disease. However, the current study on the chem. and metabolite profiles of GXBD did not follow the ancient prescription and extraction method, which hindered the discovery of effective compounds and quality control. In this study, we prepared GXBD by ancient prescription and extraction methods, and then analyzed the chem. components and xenobiotics of GXBD in vivo using high-performance liquid chromatog. coupled with quadrupole time-of-flight mass spectrometry and inhouse software.49 chem. constituents were preliminarily identified, including 7 terpenoids, 6 flavonoids, 5 alkaloids, 17 organic acids, 8 steroids and steroidal saponins, 2 nucleosides and 4 other types of compounds, of which 10 constituents were confirmed unambiguously with authentic standards Moreover, 129 metabolites were tentatively identified, including 83 metabolites in plasma, 39 metabolites in urine, 25 metabolites in bile and 9 metabolites in feces. Our study speculated that luteolin, adenosine, vanillic acid and curbitacin B might be possible effective components of GXBD for the treatment of coronary heart disease. Dehydration, deglycosylation, dehydrogenation, acetylation and taurine regulation were the main biotransformation reactions of GXBD. Our results provided an important basis for the discovery of effective compounds and quality control of GXBD. In addition, inhouse software was an useful tool for identifcation of metabolites. In the experiment, the researchers used many compounds, for example, 6-Allyl-4-methoxybenzo[d][1,3]dioxole (cas: 607-91-0Category: dioxole).

6-Allyl-4-methoxybenzo[d][1,3]dioxole (cas: 607-91-0) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Category: dioxole

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Catalytic effect of crown ethers in the bromination of 2-alkyl-1,3-dioxacyclanes was written by Kotlyar, S. A.;Pluzhnik-Gladyr, S. M.. And the article was included in Russian Journal of General Chemistry (Translation of Zhurnal Obshchei Khimii) in 1998.Product Details of 4360-63-8 This article mentions the following:

Bromination of 2-alkyl-1,3-dioxacyclanes (I; R = H, Me; n = 0, 1, 2) with mol. bromine in the presence of crown ethers in benzene (chloroform) results, regardless of the acetal ring size, in exclusive formation of II (same R, n) in nearly quant. yields. The use of crown ethers allows the bromination to be accomplished at room temperature In the experiment, the researchers used many compounds, for example, 2-Bromomethyl-1,3-dioxolane (cas: 4360-63-8Product Details of 4360-63-8).

2-Bromomethyl-1,3-dioxolane (cas: 4360-63-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Product Details of 4360-63-8

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem