Day: May 8, 2021

Chemical Research Letters, April 2021. Synthetic Route of 526-95-4, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 526-95-4, Name is Gluconic Acid (contains Gluconolactone), SMILES is O[C@H]([C@H]([C@@H]([C@@H](CO)O)O)O)C(O)=O, belongs to dioxole compound. In a article, author is HUNG, MH, introduce new discover of the category.

THE CHEMISTRY OF FLUORINATED DIOXOLES AND DIOXOLANES .5. STRUCTURE-PROPERTY RELATIONSHIP OF FLUORINATED DIOXOLE POLYMERS

Teflon-AF, based on the perfluoro-2,2-dimethyl-1,3-dioxole monomer (1), is a new class of high-T(g) amorphous fluoroplastics with enhanced properties over traditional fluoropolymers. New monomer and polymer chemistry that relates to fluorodioxole molecules was explored. Synthetic methods for introducing different substituents at 2-, 4-, and 5-positions of the dioxole ring were developed. The structure-property relationships of these polymers were studied, and we have found that the polymer glass transition temperatures are highly sensitive toward the structure of these monomers. The results indicated that the steric bulkiness of the substituents on the dioxole ring is critical for polymer properties, not only in the determination of glass transition temperature but also on the rate of polymerization. A rationalization is proposed to explain these observations.

Synthetic Route of 526-95-4, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 526-95-4.

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

New discoveries in chemical research and development in 2021. Irreversible inhibitors are therefore the equivalent of poisons in heterogeneous catalysis. 28053-08-9, Name is Disodium UDP-glucose, SMILES is O[C@@H]1[C@@H](CO)O[C@@H]([C@@H]([C@H]1O)O)OP([O-])(OP([O-])(OC[C@H]2O[C@H]([C@@H]([C@@H]2O)O)N3C=CC(NC3=O)=O)=O)=O.[Na+].[Na+], in an article , author is Catalani, Maria Pia, once mentioned of 28053-08-9, Recommanded Product: Disodium UDP-glucose.

First synthesis of 4-chloro-2,2-difluoro[1,3]dioxole[4,5-c]pyridine

The 2,2-difluorobenzodioxole moiety has been introduced in medicinal chemistry research as a potential metabolically more stable derivative of the benzodioxole fragment. Herein we present, to the best of our knowledge, the first synthesis of 4-chloro-2,2-difluoro[1,3]dioxole[4,5-c]pyridine, a 5-aza-derivative of the 2,2-difluorobenzodioxole, from simple and cheap starting materials. The chlorine atom in position 4 could be useful for further functionalisation by cross coupling reactions. (C) 2010 Elsevier Ltd. All rights reserved.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 28053-08-9, you can contact me at any time and look forward to more communication. Recommanded Product: Disodium UDP-glucose.

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

New Advances in Chemical Research, April 2021. Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. Name: L-Arabinopyranose87-72-9, Name is L-Arabinopyranose, SMILES is OC1[C@H](O)[C@@H](O)[C@@H](O)CO1, belongs to dioxole compound. In a article, author is Schfer, Sibylle, introduce new discover of the category.

Aristolic Acid Derivatives from the Bark of Antidesma ghaesembilla

Antidesma ghaesembilla is an important medicinal and food plant in many Asian countries. Ten substances could be isolated from the dichloromethane and methanol extract: sitostenone (3), daucosterol (4), chavibetol (5), asperphenamate (6), protocatechuic acid (7), vanillic acid-4-O-beta-D-glucoside (8), 1-O-beta-D-glucopyranosyl- 3-O-methyl-phloroglucinol (9), and aristolic acid II-8-O-beta-D-glucoside (10), and two new aristolic acid derivatives, 10-amino-5,7-dimethoxy-aristolic acid II (= 6-amino-9,11-dimethoxyphenanthro[3,4-d]-1,3-dioxole-5carboxylic acid; 1) and 5,7-dimethoxy-aristolochic acid II (= 9,11-dimethoxy-6-nitrophenantro[3,4-d]-1,3-dioxole-5carboxylic acid; 2). Exposure to humans of some of these compounds is associated with a severe disease today known as aristolochic acid nephropathy. Therefore, the traditional usage of this plant has to be reconsidered carefully.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 87-72-9 is helpful to your research. Name: L-Arabinopyranose.

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

New Advances in Chemical Research in 2021. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction by binding to a specific portion of an enzyme and thus slowing or preventing a reaction from occurring. 67217-55-4, Name is Mono-(6-p-toluenesulfonyl)-β-cyclodextrin, SMILES is O=S(OC[C@@H]1[C@@]([C@@H]([C@H]([C@]([H])(O1)O[C@@]23[H])O)O)([H])O[C@]4([H])[C@H](O)[C@H]([C@@]([H])([C@H](O4)CO)O[C@]5([H])[C@H](O)[C@H]([C@@]([H])([C@H](O5)CO)O[C@]6([H])[C@H](O)[C@H]([C@@]([H])([C@H](O6)CO)O[C@@]([H])(O[C@@H]([C@]7(O[C@@]([H])(O[C@@H]([C@]8(O[C@]([H])([C@@H]([C@H]2O)O)O[C@@H]3CO)[H])CO)[C@@H]([C@H]8O)O)[H])CO)[C@@H]([C@H]7O)O)O)O)O)(C9=CC=C(C=C9)C)=O, in an article , author is Wu, Dao-Xin, once mentioned of 67217-55-4, Synthetic Route of 67217-55-4.

Crystal structure of [3,4]dioxole-N ‘-(3,5-dichloro-2-hydroxybenzylidene)benzohydrazide – methanol (1:1), C15H10Cl2N2O4 center dot CH3OH

C16H14Cl2N2O5, monoclinic, P12(1)/cl (no. 14), a = 8.041(1) angstrom, b = 13.744(2) angstrom, c = 15.530(2) angstrom, beta = 100.201(2)degrees, V = 1689.2 angstrom(3), Z = 4, R-gt(F) = 0.044, wR(ref)(F-2) = 0.113, T = 298 K.

Synthetic Route of 67217-55-4, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 67217-55-4.

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

New Advances in Chemical Research, April 2021. Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. Category: dioxoles51166-71-3, Name is 2,6-Di-O-methyl-β-cyclodextrin, SMILES is COC[C@@H]1[C@]2([H])[C@@H]([C@@H](OC)[C@](O[C@]3([H])[C@H](O[C@@](O[C@]4([H])[C@H](O[C@@](O[C@]5([H])[C@H](O[C@@](O[C@@]6([H])[C@H](O)[C@@H](OC)[C@@](O[C@@H]6COC)([H])O[C@@]7([H])[C@H](O)[C@@H](OC)[C@@](O[C@@H]7COC)([H])O[C@@]8([H])[C@H](O)[C@@H](OC)[C@@](O[C@@H]8COC)([H])O2)([H])[C@H](OC)[C@H]5O)COC)([H])[C@H](OC)[C@H]4O)COC)([H])[C@H](OC)[C@H]3O)COC)([H])O1)O, belongs to dioxole compound. In a article, author is Jasinski, Jerry P., introduce new discover of the category.

1-(1,3-Benzodioxol-5-yl)ethanone

In the title compound, C(9)H(8)O(3), the dihedral angle between the mean planes of the benzene and dioxole rings is 1.4 (8)degrees, with the dioxole group in a slightly distorted envelope configuration with the flap C atom displaced by 0.0645 angstrom from the plane through the other four atoms. In the crystal, weak intermolecular C-H center dot center dot center dot O hydrogen-bond interactions link the molecules into chains propagating in [011]. The crystal packing exhibits weak pi-pi interactions as evidenced by the relatively short distances [3.801 (9) angstrom] between the centroids of adjacent benzene rings.

If you are hungry for even more, make sure to check my other article about 51166-71-3, Category: dioxoles.

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

New Advances in Chemical Research, April 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 604-69-3, Name is beta-D-Glucose pentaacetate, SMILES is CC(O[C@H]1[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)=O, belongs to dioxole compound. In a document, author is Garza, CM, introduce the new discover, Computed Properties of https://www.ambeed.com/products/604-69-3.html.

Degradation mechanism and materials for 157 nm pellicles

A great deal of resources has been invested by the semiconductor industry as a whole to make ready 157 nm as the next lithography technology node. Despite of all this effort serious infrastructure issues remain to be solved. Perhaps the first one is the availability of CaF2, but a close second is a suitable soft-pellicle material. It has been previously reported(1-4) that standard 193 nm materials, like Teflon AF(R) and Cytop(R), fail catastrophically upon exposure at 157 nm radiation; and that their transmission is very poor to non-existent. In this paper we report data showing that these materials have higher transmission and lifetimes than previously thought 2. The physical lifetime of Cytop(R) of nearly 500 J/cm(2) is remarkably high, although the transmission varies as a function dose suggesting physical and chemical changes from the onset. For Teflon AF(R) the transmission is a more complex function of exposure dose, suggesting competing mechanisms. From experiments run with PVDF (polyvinyl difluoride), we conclude that the widely reported photodarkening effect is due to the presence of hydrogen in close proximity to a fluorine atom. From IR spectra we conclude that the dioxole moeity in Teflon AF(R) undergoes a series of photochemical reactions that lead to the physical destruction of the polymer.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 604-69-3, you can contact me at any time and look forward to more communication. Computed Properties of https://www.ambeed.com/products/604-69-3.html.

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

New Advances in Chemical Research, April 2021. Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media. 68515-73-1, Name is (3R,4S,5S,6R)-2-(Decyloxy)-6-(hydroxymethyl)tetrahydro-2H-Pyran-3,4,5-triol, SMILES is O[C@H]1C(OCCCCCCCCCC)O[C@H](CO)[C@@H](O)[C@@H]1O, belongs to dioxole compound. In a document, author is Avataneo, M., introduce the new discover, Recommanded Product: 68515-73-1.

Novel perfluoropolyethers containing 2,2,4-trifluoro-5-trifluoromethoxy-1,3-dioxole blocks: synthesis and characterization

Peroxidic perfluoropolyethers (PFPEs) are industrial intermediates used by Solvay Solexis for the preparation of different classes of (per)fluoropolyethers (Fomblin (R), Galden (R), Solvera (R), Fluorolink (R)). The chemistry of these peroxidic compounds has been recently exploited for the synthesis of novel PFPE block copolymers. In the present work we report the synthesis, the structural and physical-chemical characterization of block copolymers obtained by the reaction of peroxidic PFPEs with 2,2,4-trifluoro-5-trifluoromethoxy-1,3-dioxole, a cyclic homopolymerizable perfluoroolefin. These block copolymers combine the most attractive properties of the PFPEs, like the excellent lubrication, the high thermal stability and the optical transparency, with new specific properties which are related to the perfluorodioxolenic blocks. (C) 2009 Elsevier B.V. All rights reserved.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 68515-73-1 is helpful to your research. Recommanded Product: 68515-73-1.

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

Chemical Research Letters, April 2021. Synthetic Route of 87-72-9, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 87-72-9, Name is L-Arabinopyranose, SMILES is OC1[C@H](O)[C@@H](O)[C@@H](O)CO1, belongs to dioxole compound. In a article, author is Lugert, Elizabeth C., introduce new discover of the category.

Plasticization of amorphous perfluoropolymers

Poly(perfluoro-4-vinyloxy-1-butene), which is also known as Cytop, and poly[4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole]-co-poly(tetrafluoroethylene) copolymers with dioxole monomer contents of 65% or 87% (known as Teflon AF1600 and Teflon AF2400, respectively) were plasticized with four fluorous compounds. While plasticization of all polymers with perfluoroperhydrophenanthrene, perfluoro(1-methyldecalin), a perfluorotetraether with three trifluoromethyl side groups and one hydrogen atom, and a linear perfluorooligoether with an average of 14.3 ether groups per molecule was successful, these four plasticizers affected the 12 blends very differently. A threshold of plasticization beyond which further increases in the plasticizer volume fraction did not further affect the glass transition temperature, T-g was observed for some blends. Also, the limit of miscibility ranged from as low as 20% plasticizer content to complete miscibility at all volume fractions. The blends of Teflon AF2400 or Teflon AF1600 with high contents of the oligoether provided T-g values as low as -114 degrees C, lower than for any other fully miscible blend. The occurrence of two glass transitions in an intermediate range of plasticizer volume ratios for these two types of blends can be explained by distinct local environments rather than macroscopic phase separation, as anticipated by the Lodge-McLeish model. (C) 2008 Wiley Periodicals, Inc.

Synthetic Route of 87-72-9, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 87-72-9.

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

New Advances in Chemical Research in 2021. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction by binding to a specific portion of an enzyme and thus slowing or preventing a reaction from occurring. 604-69-3, Name is beta-D-Glucose pentaacetate, SMILES is CC(O[C@H]1[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)=O, in an article , author is Le Tuan Anh, once mentioned of 604-69-3, Recommanded Product: beta-D-Glucose pentaacetate.

A new approach to alkaloid-like systems: synthesis and crystal structure of 1-(2-acetyl-11-methoxy-5,6-dihydro[1,3]dioxolo[4,5-g]pyrrolo[2,1-a]isoquinolin-1-yl)propan-2-one

The title compound, C19H19NO5, (I), is the product of a domino reaction between cotarnine chloride and acetylacetylene catalysed by copper(I) iodide. The molecule of (I) comprises a fused tetracyclic system containing two terminal five-membered rings (pyrrole and 1,3-dioxole) and two central six-membered rings (dihydropyridine and benzene). The five-membered 1,3-dioxole ring has an envelope conformation and the central six-membered dihydropyridine ring adopts a twist-boat conformation. The acyl substituent is almost coplanar with the pyrrole ring, whereas the methoxy substituent is twisted by 27.93 (16)degrees relative to the benzene ring. The 2-oxopropan-1-yl substituent is roughly perpendicular to the pyrrole ring. In the crystal, molecules are stacked along the a-axis direction; the stacks are linked by weak C-H center dot center dot center dot O hydrogen bonds into puckered layers lying parallel to (001).

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 604-69-3, in my other articles. Recommanded Product: beta-D-Glucose pentaacetate.

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

New research progress on 4330-21-6 in 2021. Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. In an article, author is Yeung, Sing Yee, once mentioned the application of 4330-21-6, Safety of Hoffer’s chlorosugar, Name is Hoffer’s chlorosugar, molecular formula is C21H21ClO5, molecular weight is 388.8415, MDL number is MFCD01630916, category is dioxole. Now introduce a scientific discovery about this category.

Antiproliferative activity of the Antrodia camphorata secondary metabolite 4,7-dimethoxy-5-methylbenzo[d][1,3]dioxole and analogues (Reprinted from Fitoterapia, vol 123, pg 9-12, 2017)

Both the traditional Chinese medicinal fungus, Antrodia camphorata, and its secondary metabolite, 4,7-dimethoxy-5-methylbenzo[d][1,3]dioxole, have been reported to possess promising anticancer activity. In this work the natural product and analogues bearing more polar substituents were synthesised and assessed for antiproliferative activity in the NCI-60 screen. Although each compound inhibited the growth of some cell lines at 10 mu M, none had sufficient activity to warrant further investigation.

If you are hungry for even more, make sure to check my other article about 4330-21-6, Safety of Hoffer’s chlorosugar.

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