Day: December 29, 2020

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Computed Properties of C9H9BrO2, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 214894-89-0, name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine. In an article£¬Which mentioned a new discovery about 214894-89-0

Copper-Catalyzed Regioselective Hydroalkylation of 1,3-Dienes with Alkyl Fluorides and Grignard Reagents

Copper complexes generated in situ from CuCl2, alkyl Grignard reagents, and 1,3-dienes play important roles as catalytic active species for the 1,2-hydroalkylation of 1,3-dienes by alkyl fluorides through C-F bond cleavage. The alkyl group is introduced to an internal carbon atom of the 1,3-diene regioselectively, thus giving rise to the branched terminal alkene product. Making the switch: A copper-hydride species, generated by the treatment of a copper salt with alkyl Grignard reagents, catalyzes the 1,2-hydroalkylation of 1,3-dienes by alkyl fluorides and Grignard reagents. The alkyl group of the alkyl fluoride is selectively introduced to an internal carbon atom of the 1,3-diene and the Grignard reagent acts as hydride source to give the branched terminal alkene, even in the presence of alkenes and alkynes.

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

Chemistry is traditionally divided into organic and inorganic chemistry. Product Details of 10288-72-9, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 10288-72-9

BENZOXAZINES FOR ENHANCING SYNAPTIC RESPONSE

Compounds based on the benzoxazine ring system STR1 are disclosed for use in enhancing synaptic responses mediated by AMPA receptors. The compounds are effective in the treatment of subjects suffering from impaired nervous or intellectual functioning due to deficiencies in the number or strength of excitatory synapses or in the number of AMPA receptors. The compounds can also be used for the treatment of non-impaired subjects for enhancing performance in sensory-motor and cognitive tasks which depend on brain networks utilizing AMPA receptors, for improving the performance of subjects with memory deficiencies, for treating schizophrenia, and for improving memory encoding.

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

Electric Literature of 22013-33-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.22013-33-8, Name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine, molecular formula is C8H9NO2. In a Patent£¬once mentioned of 22013-33-8

QUINOLINE DERIVATIVES AS NK-3 ANTAGONISTS

Certain compounds of formula (I) below or a pharmaceutically acceptable salt or hydrate thereof: a process for preparing such compounds, a pharmaceutical composition comprising such compounds and the use of such compounds and composition in medicine.

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

214894-89-0, Name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, belongs to benzodioxans compound, is a common compound. Product Details of 214894-89-0In an article, once mentioned the new application about 214894-89-0.

Benzothiazolone derivatives

A compound of formula I, including optical isomers thereof, STR1 wherein X represents –SO 2 NH– or –NHSO 2 –,p, q and r independently represent 2 or 3,Y represents thienyl optionally substituted by alkyl or halogen, or phenylthio- or phenyl optionally substituted by alkyl or halogen, andeach R independently represents H or alkyl,and pharmaceutically acceptable salts, esters and amides thereof.

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

Synthetic Route of 70918-54-6, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 70918-54-6, Name is (S)-1,4-Benzodioxane-2-carboxylic acid,introducing its new discovery.

Copper-catalyzed C-H alkylation of 8-aminoquinolines via 8-amide chelation assistance

A copper-catalyzed 8-amide chelation-assisted C-H alkylation of 8-aminoquinolines is described. The secondary and tertiary alkyl carboxylic acids can be used as alkylating agents. This reaction allows for the highly regioselective preparation of C2-adamantyl 8-aminoquinoline scaffolds by the decarboxylative alkylation catalytic system.

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

Electric Literature of 2879-20-1, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.2879-20-1, Name is 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethanone, molecular formula is C10H10O3. In a article£¬once mentioned of 2879-20-1

One-pot three-component reactions of methyl ketones, phenols and a nucleophile: An expedient way to synthesize densely substituted benzofurans

Three-component reactions of phenylglyoxal monohydrate, phenols, and indoles were developed with the aid of acid-catalyst, which produced various densely substituted benzofurans with good to excellent yields. On the basis of this observation, a one-pot, step-wise reaction was developed by using methyl ketones instead of using phenylglyoxal component in I2/DMSO system. At last, three-component reaction offered a useful way to synthesize densely substituted benzofurans starting from simple and easily available substrates. The indole component can be replaced by some other nucleophiles, such as 1,2,4-trimethoxybenzene and thiophenol.

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

Electric Literature of 214894-89-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.214894-89-0, Name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine, molecular formula is C9H9BrO2. In a Article£¬once mentioned of 214894-89-0

Stereo-selective bio-reduction of acetophenone and its derivatives by soil fungal isolates

Microbial asymmetric reduction of ketone is an efficient tool for the synthesis of chiral alcohols. Many reports are available for the bio-reduction of acetophenone and its derivatives, since it is widely used model substrate. This research focus on exploring the soil fungal isolates for their ability towards the reduction of acetophenone and its derivatives to their corresponding chiral alcohols using growing cells instead of resting cells. Bio-reduction of acetophenone, 4-fluoro acetophenone, and 4-chloro acetophenone were carried out using different fungal cultures isolated from soil. All the isolates exhibited a good reduction capability when grown in an optimal condition. Among the screened fungal cultures, Penicillium sp. and Aspergillus sp. showed significant bioconversion with varying enantio-selectivity. However, the Penicillium sp. has showed maximum ability of bio-reduction. The best performing isolate was characterized using internal transcribed spacer (ITS) region and found to be Penicillium rubens VIT SS1, which showed higher conversion and selectivity more than 90% towards acetophenone and its derivatives. The reaction conditions such as pH, temperature and media were evaluated for the bio-reduction of acetophenone using Penicillium rubens VIT SS1. The substrate loading was increased from 0.5g/L to 6g/L at shake flask level using the optimized condition pH 5¡À0.5 and temperature 25¡À2C. This study revealed huge potential of fungal cultures for the synthesis of many aromatic chiral alcohols in a simpler, novel and cost effective manner.

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

Synthetic Route of 214894-89-0, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 214894-89-0, Name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine,introducing its new discovery.

Novel processes for the preparation or (R)-alpha-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol

The present invention provides various processes for the preparation of (R)-alpha-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenyl)ethyl]-4-piperidinemethanol. These processes may be characterized by the following scheme: 1

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

Synthetic Route of 2879-20-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.2879-20-1, Name is 1-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)ethanone, molecular formula is C10H10O3. In a Patent£¬once mentioned of 2879-20-1

DERIVATIVES OF PROTOBERBERINE BIOLOGICAL ALKALOIDS AND USE OF SAME INHIBITING ULCERATIVE COLITIS

Disclosed are derivatives of protoberberine biological alkaloids or physiologically acceptable salts thereof produced by means of a derivative reaction of a source material of biological alkaline quaternary ammonium salts of protoberberine alkaloids, a preparation method for same and pharmaceutical uses thereof. The derivatives of protoberberine biological alkaloids or the physiologically acceptable salts thereof show activity inhibiting ulcerative colitis and can be used in the preparation of drugs for same.

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

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 22013-33-8, name is 2,3-Dihydrobenzo[b][1,4]dioxin-6-amine, introducing its new discovery. SDS of cas: 22013-33-8

Synthesis and in vitro antitumour evaluation of benzothiazole-2- carbonitrile derivatives

Novel benzothiazole derivatives have been synthesised via the corresponding imino-1,2,3-dithiazoles. The cytotoxicity of some of these polyheterocyclic compounds was studied. Our results show that 2-cyano derivatives exhibit a medium in vitro antitumour activity.

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