Day: December 8, 2020

39270-39-8, In an article, published in an article,authors is Capilla, once mentioned the application of 39270-39-8, Name is (2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)methanol,molecular formula is C9H10O3, is a conventional compound. this article was the specific content is as follows.

Synthesis of isoquinolines and tetrahydroisoquinolines as potential antitumour agents

The isoquinoline 17 and the tetrahydroisoquinoline 16 were synthesized from 2,3-dihydro-1,4-benzodioxin (1) by different synthetic strategies. Preparation of arylethylamines and their cyclization in Bischler-Napieralski conditions have been studied. Another approach to isoquinolines was based on the amination of the ketone 13 followed by cyclization in acidic media. The route via the amide 15 was found to be more successful with respect to both yield and ease of reaction.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, 2879-20-1, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 2879-20-1, Name is 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethanone, molecular formula is C10H10O3. In a Article, authors is Reeves, Jonathan T.£¬once mentioned of 2879-20-1

Direct titanium-mediated conversion of ketones into enamides with ammonia and acetic anhydride

A one-step conversion of ketones into N-acetyl enamides was developed. The process employs safe and inexpensive reagents, proceeds under mild conditions, and tolerates diverse functional groups. The addition of edte (N,N,N ,N -tetrakis(2-hydroxyethyl)ethylenediamine) prior to workup enables water solubilization of Ti alkoxides and allows a simple extractive workup. Copyright

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

2879-20-1, An article , which mentions 2879-20-1, molecular formula is C10H10O3. The compound – 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethanone played an important role in people’s production and life.

Stereoselective borylative ketone-diene coupling

In the presence of catalytic Ni(cod)2 and P(t-Bu)3, ketones, dienes, and B2(pin)2 undergo a stereoselective multicomponent coupling reaction. Upon oxidation, the reaction furnishes 1,3-diols as the major reaction product.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

22013-33-8, An article , which mentions 22013-33-8, molecular formula is C8H9NO2. The compound – 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine played an important role in people’s production and life.

Flexible Entry into 3-Arylpent-2-enedioic Acids via Heck-Matsuda Arylation of Dimethyl Glutaconate with Arenediazonium Tosylates

For the preparation of compound libraries of Michael acceptors with tunable reactivity toward nuclophilic selenocysteine residue of thioredoxin reductase, a range of 3-arylglutaconic acids were required. The existing methods at the time had limited scope or involved several steps. A hitherto undescribed protocol for direct palladium(II) acetate-catalyzed arylation of glutaconic acid dimethyl ester at position 3 has been developed with a diverse set of arenediazonium tosylates followed by hydrolysis. This generally good-yielding two-step sequence displayed a propensity to deliver E -configured coupling products while compounds mostly featured in the literature were predominantly Z -configured. The possibility for preparing a library of 4-arylpyridine-2,6(1 H,3 H)-diones has been exemplified.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

39270-39-8, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.39270-39-8, Name is (2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)methanol, molecular formula is C9H10O3, introducing its new discovery.

Enantiomeric and enantiotopic analysis of cone-shaped compounds with C3 and C3v symmetry using NMR spectroscopy in chiral anisotropic solvents

We describe the enantiomeric and enantiotopic analysis of the NMR spectra of compounds derived from the functionalized cone-shaped core, cyclotriveratrylenes (CTV), dissolved in weakly oriented lyotropic chiral liquid crystals (CLCs) based on organic solutions of poly-gamma-benzyl-L-glutamate. The CTV core lacks prostereogenic as well as stereogenic tetrahedral centers. However, depending on the pattern of substitution, chiral and achiral compounds with different symmetries can be obtained. Thus, symmetrically nonasubstituted CTVs (C3 symmetry) are optically active and exhibit enantiomeric isomers, while symmetrically hexasubstituted (C3v symmetry) derivatives are prochiral and possess enantiotopic elements. In the first part we use 2H and 13C NMR to study two nonasubstituted (-OH or -OCH3) CTVs, where the ring methylenes are fully deuterated, and show for the first time that the observation of enantiomeric discrimination of chiral molecules with a 3-fold symmetry axis is possible in a CLC. It is argued that this discrimination reflects different orientational ordering of the M and P isomers, rather than specific chiral short-range solvent-solute interactions that may affect differently the magnetic parameters of the enantiomers or even their geometry. In the second part we present similar measurements on hexasubstituted CTV with flexible side groups (-OC(O)CH3 and the, partially deuterated bidentate, -OCH2CH2O-), having on the average C3v symmetry. No spectral discrimination of enantiotopic sites was detected for the -OC(O)CH3 derivative. This is consistent with a recent theoretical work (J. Chem. Phys. 1999, 111, 6890) that indicates that in C3v molecules no chiral discrimination between enantiotopic elements, based on ordering, is possible. In contrast, a clear splitting was observed in the 2H spectra of the enantiotopic deuterons of the side groups in the tri(dioxyethylene)-CTV. It is argued that this discrimination reflects different ordering characteristics of the various, rapidly (on the NMR time scale) interconverting conformers of this compound. Assuming two twisted structures for each of the dioxyethylene side groups, four different conformers are expected, comprising two sets of enantiomeric pairs with, respectively, C3 and C1 symmetries. Differential ordering and/or fractional population imbalance of these enantiomeric pairs leads to the observed spectral discrimination of sites in the side chains that on average form enantiotopic pairs.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

39270-39-8, Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent£¬Which mentioned a new discovery about 39270-39-8

Pyridyl- and/or pyridoyl-(piperid-4-yl) ureas and analogues thereof

The invention concerns the preparation of compounds of formula STR1 and acid addition and quaternary ammonium salts thereof, wherein the dotted line represents an optional bond, Ar represents a ring system of formula STR2 in which Q is O, S, –CR7 =CR8 –, –N=CR8 — and –NM=N–; R4, R5 and R6 ; and R7 and R8 when present, each represent hydrogen or a substituent selected from lower alkyl, lower alkenyl, lower alkoxy, NO2, NH2, haloloweralkyl, hydroxyloweralkyl, aminoloweralkyl, substituted amino, halogen, loweralkoxycarbonyl, cyano, CONH2 and hydroxy; and additionally either R4 and R5 when adjacent or R6 and R8 when adjacent, together with the carbon atoms to which they are attached also represent a fused five or six membered carbocylic or heterocyclic ring optionally carrying one or more substituents as defined above; R is an optionally substituted aryl or heteroaryl radical or a cycloalkyl radical containing 5 to 7 carbon atoms; R1, R2, R3 and R9 are each hydrogen or a lower alkyl group; n is 0 or 1; X is =O, =S, or =NY; Y is –O– or a direct bond and Z is — CO– or –CH2 –, with the proviso that when Ar is unsubstituted phenyl and R9 is hydrogen then v is –O–. The compounds of formula I exhibit psychotropic activity and are useful as antidepressants.

39270-39-8, 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 39270-39-8

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Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

22013-33-8, Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 22013-33-8

Amide derivatives as ion-channel ligands and pharmaceutical compositions and methods of using the same

Compounds are disclosed that have a formula represented by the following: [image] The compounds may be prepared as pharmaceutical compositions, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example, pain, inflammation, traumatic injury, and others.

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Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

10288-72-9, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 10288-72-9, C8H8O3. A document type is Article, introducing its new discovery.

SYNTHESE D’UN ANALOGUE DIOXINIQUE DU PSORALENE

The synthesis of a new analog of psoralen built on a benzodioxinic moiety have been efficiently achieved using as a key intermediate the 6-hydroxy 7-formyl 1,4-benzodioxan.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 70918-54-6, Name is (S)-1,4-Benzodioxane-2-carboxylic acid. In a document type is Article, introducing its new discovery., 70918-54-6

Silver-catalyzed decarboxylative trifluoromethylthiolation of aliphatic carboxylic acids in aqueous emulsion

A silver-catalyzed decarboxylative trifluoromethylthiolation of secondary and tertiary carboxylic acids under mild conditions tolerates a wide range of functional groups. The reaction was dramatically accelerated by its performance in an aqueous emulsion, which was formed by the addition of sodium dodecyl sulfate to water. It was proposed that the radical, which was generated from the silver-catalyzed decarboxylation in the “oil-in-water” droplets, could easily react with the trifluoromethylthiolating reagent to form the product.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, 22013-33-8, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 22013-33-8, Name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine, molecular formula is C8H9NO2. In a Article, authors is Rakitina, Tatiana V.£¬once mentioned of 22013-33-8

Efficacy of Novel Syk-Kinase Inhibitors MT-SYK-03 and MT-SYK-322 in Cellular Models of Autoimmunity and Cancer

Novel rationally-designed Syk-kinase inhibitor MT-SYK-03 demonstrated equal potency with R406 (active metabolite of Fostamatinib, a phase III clinical trial candidate) in cellular models of autoimmunity and cancer with EC50 values in sub-micromolar range, while MT-SYK-322 was less active.

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Reference£º
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem