Tag: M.W:200-300

5394-13-8, In an article, published in an article,authors is Bose, Shubhankar Kumar, once mentioned the application of 5394-13-8, Name is 2-Bromobenzo[b]thiophene,molecular formula is C8H5BrS, is a conventional compound. this article was the specific content is as follows.

Efficient synthesis of aryl boronates via zinc-catalyzed cross-coupling of alkoxy diboron reagents with aryl halides at room temperature

A zinc(II)/NHC system catalyzes the borylation of aryl halides with diboron (4) reagents in the presence of KOMe at rt. This transformation can be applied to a broad range of substrates with high functional group compatibility. Radical scavenger experiments do not support a radical-mediated process.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

4923-87-9, 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. 4923-87-9, C8H5BrS. A document type is Article, introducing its new discovery.

Amine-borane complexes: Air- and moisture-stable partners for palladium-catalyzed borylation of aryl bromides and chlorides

A method for using amine-borane complexes directly in palladium catalyzed borylation has been developed. The reaction proceeds through the sequential formation of a boronium species followed by deprotonation leading to the aminoborane. This reagent is then directly used in the borylation process leading, after work-up, to various boronic acid derivatives. The reaction was applied to (hetero)aryl triflates, iodides, bromides and chlorides.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

360575-29-7, 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. 360575-29-7, C10H7BrO2S. A document type is Article, introducing its new discovery.

Spirolactam-based acetyl-CoA carboxylase inhibitors: Toward improved metabolic stability of a chromanone lead structure

Acetyl-CoA carboxylase (ACC) catalyzes the rate-determining step in de novo lipogenesis and plays a crucial role in the regulation of fatty acid oxidation. Alterations in lipid metabolism are believed to contribute to insulin resistance; thus inhibition of ACC offers a promising option for intervention in type 2 diabetes mellitus. Herein we disclose a series of ACC inhibitors based on a spirocyclic pyrazololactam core. The lactam series has improved chemical and metabolic stability relative to our previously reported pyrazoloketone series, while retaining potent inhibition of ACC1 and ACC2. Optimization of the pyrazole and amide substituents led to quinoline amide 21, which was advanced to preclinical development.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, the author is Fedi, Valentina and a compound is mentioned, 104795-85-9, Methyl 6-chlorobenzo[b]thiophene-2-carboxylate, introducing its new discovery. 104795-85-9

Discovery of a new series of potent and selective linear tachykinin NK 2 receptor antagonists

Starting from 1 (MEN 14268), a selective tachykinin NK2 receptor antagonist with an interesting in vitro pharmacological profile, a family of numerous antagonists was obtained through an optimization process focused on iterated structural modifications. The effects of the introduction of a wide variety of substituents on the lipophilic aromatic part of the molecule and the modulation of the structural constraint through the insertion of different achiral alpha,alpha-dialkylamino acids were investigated. In particular, aromatic and benzofused heteroaromatic moieties were introduced at the pseudo-N-terminal residue to replace the 2-benzothiophene moiety, and a systematic investigation of the best positioning of substituents onto the aromatic platform was reported for the benzothiophene core. Studies on the modulation of the length and the rigidity of the hydrophilic pseudo-C-terminal pendant are presented. Many heteroaliphatic groups are well tolerated by the receptor in this part of the ligand. The product 48f (MEN15596), bearing a methyl substituent on the benzothiophene and a tetrahydropyranylmethylpiperidine pendant, was finally selected for its good in vivo activity after intravenous, intraduodenal, and oral administration in guinea pigs.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! Read on for other articles about 73286-71-2!, 104795-85-9

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

5394-13-8, In an article, published in an article,authors is Chelucci, Giorgio, once mentioned the application of 5394-13-8, Name is 2-Bromobenzo[b]thiophene,molecular formula is C8H5BrS, is a conventional compound. this article was the specific content is as follows.

Room-temperature hydrodehalogenation of halogenated heteropentalenes with one or two heteroatoms

The pair NaBH4-TMEDA as a hydride source and catalytic PdCl 2(dppf) in THF prove to be an efficient system for the hydrodehalogenation of bromo(chloro)-heteropentalenes with one or two heteroatoms, while Pd(OAc)2/PPh3 is able to reduce reactive haloheteropentalenes, and PdCl2(tbpf) allows the removal of the 2-chlorine from a thiophene ring. The reaction conditions tolerate various functional groups, allowing highly chemoselective reactions in the presence of halide, ester, alkyne, alkene, and nitrile substituents and also showing good efficiency in the regioselective hydrodehalogenation of a variety of polyhalogenated substrates.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

Chemistry is traditionally divided into organic and inorganic chemistry. 6287-82-7, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 6287-82-7

Dihydropyridines useful in the treatment of angina and stroke

This invention provides certain substituted dihydropyridines, their pharmaceutical formulations, and their use for causing vasodilation in mammals.

One of the oldest and most widely used commercial enzyme inhibitors is aspirin, 6287-82-7, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 6287-82-7

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

6287-82-7, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 6287-82-7, Name is 2,3-Dibromobenzo[b]thiophene, molecular formula is C8H4Br2S. In a Article, authors is Nakashima, Takuya£¬once mentioned of 6287-82-7

Self-Contained Photoacid Generator Triggered by Photocyclization of Triangle Terarylene Backbone

We herein propose a new type of efficient neutral photoacid generator. A photoinduced 6pi-electrocyclization reaction of photochromic triangle terarylenes triggers subsequent release of a Br¡ãnsted acid, which took place from the photocyclized form. A H-atom and its conjugate base were introduced at both sides of a 6pi-system to form the self-contained photoacid generator. UV irradiation to the 6pi-system produces a cyclohexa-1,3-diene part with a H-atom and a conjugate base on the sp3 C-atoms at 5- and 6-positions, respectively, which spontaneously release an acid molecule quantitatively forming a polyaromatic compound. A net quantum yield of photoacid generation as high as 0.52 under ambient conditions and a photoinitiated cationic polymerization of an epoxy monomer are demonstrated.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.6287-82-7. In my other articles, you can also check out more blogs about 6287-82-7

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

5394-13-8, Name is 2-Bromobenzo[b]thiophene, belongs to benzothiophene compound, is a common compound. 5394-13-8In an article, authors is Atwater, Bruce, once mentioned the new application about 5394-13-8.

The Selective Cross-Coupling of Secondary Alkyl Zinc Reagents to Five-Membered-Ring Heterocycles Using Pd-PEPPSI-IHeptCl

The ability to cross-couple secondary alkyl centers is fraught with a number of problems, including difficult reductive elimination, which often leads to beta-hydride elimination. Whereas catalysts have been reported that provide decent selectivity for the expected (non-rearranged) cross-coupled product with aryl or heteroaryl oxidative-addition partners, none have shown reliable selectivity with five-membered-ring heterocycles. In this report, a new, rationally designed catalyst, Pd-PEPPSI-IHeptCl, is demonstrated to be effective in selective cross-coupling reactions with secondary alkyl reagents across an impressive variety of furans, thiophenes, and benzo-fused derivatives (e.g., indoles, benzofurans), in most instances producing clean products with minimal, if any, migratory insertion for the first time. A wide variety of five-membered-ring heterocycles were successfully cross-coupled to secondary alkyl zinc reagents with the new precatalyst Pd-PEPPSI-IHeptCl, which features a bulky N-heterocyclic carbene ligand. This catalyst suppresses migratory-insertion (rearrangement) pathways, and the desired products are thus formed with high selectivity.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

360575-29-7, Name is Methyl 4-bromobenzo[b]thiophene-2-carboxylate, belongs to benzothiophene compound, is a common compound. 360575-29-7In an article, authors is Bala, Renu, once mentioned the new application about 360575-29-7.

Regioselective synthesis of potent 4,5,6,7-tetrahydroindazole derivatives via microwave-assisted vilsmeier-haack reaction and their antioxidant activity evaluation

Background: Tetrahydroindazole, a member of the fused-pyrazole system, is a least studied class of heterocyclic compounds owing to its scarcity in nature. However, a large number of synthetically prepared tetrahydroindazoles are known to show a variety of biological activities such as interleukin- 2 inducible T-Cell kinase inhibitors, AMPA receptor positive allosteric modulators, antitumor, antituberculosis, anti-inflammatory and antimicrobial activities. Vilsmeier-Haack reaction is one of the most important chemical reactions used for formylation of electron rich arenes. Even though Vilsmeier- Haack reaction was studied on a wide variety of hydrazones derived from active methylene compounds, literature lacks the examples of the use of 4-substituted cyclohexanones as a substrate for the synthesis of 4,5,6,7-tetrahydroindazoles. The study of the reaction of Vilsmeier-Haack reagent with hydrazones derived from cyclic keto compounds having active methylene has been considered the interested topic of investigation. In the present study, ethyl cyclohexanone-4-carboxylate was treated with one equivalent of various hydrazines for two hours and the resulted hydrazones were further treated with an OPC-VH reagent (Vilsmeier-Haack reagent isolated from phthaloyl dichloride and N,Ndimethylformamide) afforded 4,5,6,7-tetrahydroindazoles in excellent yields. The synthesized compounds 4a-f and 5a-f were screened for their antioxidant activities using the DPPH radical scavenging assay. The target compounds were synthesized regioselectively using 4+1 approach in excellent yields. A number of experiments using both conventional heating as well as microwave irradiation methods were tried and on comparison, microwave irradiation method was found excellent in terms of easy work up, high chemical yields, shortened reaction times, clean and, no by-products formation. Some of the synthesized compounds showed significant antioxidant activity. The microwave assisted synthesis of 4,5,6,7-tetrahydroindazoles from ethyl cyclohexanone-4-carboxylate has been reported under mild conditions in excellent yield. Easy work up, high chemical yield, shortened reaction times, clean and no by-products formation are the major advantages of this protocol. These advantages may make this method useful for chemists who are interested in developing novel 4,5,6,7-tetrahydroindazole based drugs.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, 4923-87-9, such as the rate of change in the concentration of reactants or products with time.In a article, authors is Mills, L. Reginald, mentioned the application of 4923-87-9, Name is 5-Bromobenzothiophene, molecular formula is C8H5BrS

Ni-Catalyzed Reductive Cyanation of Aryl Halides and Phenol Derivatives via Transnitrilation

Herein, we report a Ni-catalyzed reductive coupling for the synthesis of benzonitriles from aryl (pseudo)halides and an electrophilic cyanating reagent, 2-methyl-2-phenyl malononitrile (MPMN). MPMN is a bench-stable, carbon-bound electrophilic CN reagent that does not release cyanide under the reaction conditions. A variety of medicinally relevant benzonitriles can be made in good yields. Addition of NaBr to the reaction mixture allows for the use of more challenging aryl electrophiles such as aryl chlorides, tosylates, and triflates. Mechanistic investigations suggest that NaBr plays a role in facilitating oxidative addition with these substrates.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. 4923-87-9, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 4923-87-9, in my other articles.

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Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem