Month: November 2022

Copper-Catalyzed [4+2]-Cycloadditions of Isoxazoles with 2-Alkynylbenzaldehydes To Access Distinct α-Carbonylnaphthalene Derivatives: C(3,4)- versus C(4,5)-Regioselectivity at Isoxazoles was written by Giri, Sovan Sundar;Liu, Rai-Shung. And the article was included in ACS Catalysis in 2019.Name: 5-Chloro-2-(phenylethynyl)benzaldehyde The following contents are mentioned in the article:

Cu(II)-catalyzed [4+2]-cycloadditions occur between Cu-benzopyryliums and substituted isoxazoles with the regioselectivity on the C(3,4)-carbons of isoxazoles. We postulate that a prior coordination of isoxazoles with Cu(OAc)₂ increases the π-bond character of the C(3,4) carbons to become an effective 2π-donor. In this reaction sequence, 3,5-disubstituted isoxazoles yield α,γ-dicarbonylnaphthalenes whereas, 5-substituted isoxazoles deliver α,γ-dicarbonyl-β-aminonaphthalenes. For unsubstituted isoxazole, its cycloaddition chemoselectivity is switched to the C(4,5)-addition regioselectivity to yield α-carbonyl-γ-cyanonaphthalene derivatives This study involved multiple reactions and reactants, such as 5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3Name: 5-Chloro-2-(phenylethynyl)benzaldehyde).

5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Name: 5-Chloro-2-(phenylethynyl)benzaldehyde

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

De Novo Protocol for the Construction of Benzo[a]fluorenes via Nitrile/Alkene Activation was written by Gore, Babasaheb Sopan;Chiang, Chun-Hsien;Lee, Chein Chung;Shih, Yi-Lun;Wang, Jeh-Jeng. And the article was included in Organic Letters in 2020.Computed Properties of C15H9ClO The following contents are mentioned in the article:

Unprecedented chemo- and regioselective synthesis of benzo[a]fluorenes and naphthamide-substituted benzo[a]fluorenes were constructed from the reaction of (E)-2-aroyl-3-(2-(arylalkynes/alkenes)aryl)acrylonitrile scaffolds under metal-free conditions via the activation of nitriles and alkenes, resp. A tentative reaction mechanism was proposed for this homofunctionalization of nitriles. Control experiments showed that the reaction proceeds via selective nitrile or alkene protonation, depending upon the substrates. Addnl., we demonstrated an alternative expeditious route for the synthesis of disubstituted benzo[a]fluorenes in the presence of TfOH alone. This study involved multiple reactions and reactants, such as 5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3Computed Properties of C15H9ClO).

5-Chloro-2-(phenylethynyl)benzaldehyde (cas: 1186603-47-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Computed Properties of C15H9ClO

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis of Biologically Active Piperidine Metabolites of Clopidogrel: Determination of Structure and Analyte Development was written by Shaw, Scott A.;Balasubramanian, Balu;Bonacorsi, Samuel;Cortes, Janet Caceres;Cao, Kevin;Chen, Bang-Chi;Dai, Jun;Decicco, Carl;Goswami, Animesh;Guo, Zhiwei;Hanson, Ronald;Humphreys, W. Griffith;Lam, Patrick Y. S.;Li, Wenying;Mathur, Arvind;Maxwell, Brad D.;Michaudel, Quentin;Peng, Li;Pudzianowski, Andrew;Qiu, Feng;Su, Shun;Sun, Dawn;Tymiak, Adrienne A.;Vokits, Benjamin P.;Wang, Bei;Wexler, Ruth;Wu, Dauh-Rurng;Zhang, Yingru;Zhao, Rulin;Baran, Phil S.. And the article was included in Journal of Organic Chemistry in 2015.Category: chlorides-buliding-blocks The following contents are mentioned in the article:

Clopidogrel (I) is a prodrug anticoagulant with active metabolites that irreversibly inhibit the platelet surface GPCR P2Y₁₂ and thus inhibit platelet activation. However, gaining an understanding of patient response has been limited due to imprecise understanding of metabolite activity and stereochem., and a lack of acceptable analytes for quantifying in vivo metabolite formation. Methods for the production of all bioactive metabolites of clopidogrel (II, mixture of four stereoisomers), their stereochem. assignment, and the development of stable analytes via three conceptually orthogonal routes are disclosed. This study involved multiple reactions and reactants, such as (S)-Methyl 2-amino-2-(2-chlorophenyl)acetate (cas: 141109-14-0Category: chlorides-buliding-blocks).

(S)-Methyl 2-amino-2-(2-chlorophenyl)acetate (cas: 141109-14-0) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Category: chlorides-buliding-blocks

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Modeling acute toxicity of chemicals to Daphnia magna: a probabilistic neural network approach was written by Kaiser, Klaus L. E.;Niculescu, Stefan P.. And the article was included in Environmental Toxicology and Chemistry in 2001.Related Products of 2272-40-4 The following contents are mentioned in the article:

A methodol. based on probabilistic neural networks (PNNs) is applied to model the acute toxicity (48-h LC50) of a set of 700 highly diverse chems. to Daphnia magna. First, cross-validation experiments confirming the potential use of the PNN as modeling tool for the problem at hand were performed. Next, various approaches to construct-improved models are presented. The resulting four models are then validated using an external test set of 76 addnl. compounds Input to the PNNs is derived solely from simple mol. descriptors and structural fragments and excludes bulk property parameters, such as the water solubility or the octanol/water partition coefficient This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Related Products of 2272-40-4).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Related Products of 2272-40-4

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

An efficient and metal-free synthesis of 5,7-dimethylcyclopentenon[2,3-c]coumarin was written by Yerramreddy, Thirupathi Reddy;Yiannikouris, Alexandros. And the article was included in Journal of Chemical Research in 2021.Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate The following contents are mentioned in the article:

A synthesis of 5,7-dimethylcyclopentenon[2,3-c]coumarin I from 3,5-dimethoxyphenol via a Pechmann condensation involved five steps and represented an alternative com. viable approach over existing synthetic protocols in the literature. Operational simplicity, inexpensive key raw materials, short reaction times, and excellent yields were remarkable features of this approach. The aflatoxin template was provided in 55%-67% overall yield from 3,5-dimethoxyphenol with >99% purity, evaluated by high-performance liquid chromatog., ¹H NMR, ¹³C NMR, high-resolution mass spectrometry, and liquid chromatog.-mass spectrometry. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Application In Synthesis of Ethyl 4-chloro-3-oxobutanoate

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Highly Selective and Multigram Hydrogenation of Citral into Citronellal by Palladium Nanoparticles in Water was written by Duval, Marion;Sagorin, Gilles;Denicourt-Nowicki, Audrey;Roucoux, Alain. And the article was included in ACS Sustainable Chemistry & Engineering in 2022.Recommanded Product: Sodium tetrachloropalladate(II) The following contents are mentioned in the article:

The synthesis of citronellal, an added-value chem. for perfumery, was performed through selective and green hydrogenation of citral into citronellal in water. Aqueous suspensions of spherical ammonium-capped palladium nanoparticles with sizes around 3 nm selectively reduced the conjugated carbon-carbon double bond. An excellent selectivity up to 97% in citronellal was achieved at complete conversion in water. The presence of potassium hydroxide proved crucial to control the selectivity and avoid other hydrogenation coproducts. These optimized conditions were further applied to a 135 g substrate loading, affording a relevant turnover number (TON) of 10,000. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Recommanded Product: Sodium tetrachloropalladate(II)).

Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Recommanded Product: Sodium tetrachloropalladate(II)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ultra-small Pd Nanoparticles Supported on Porous g-C₃N₄ Nanosheet for Efficient Hydrogenation Reaction was written by Yang, Liuqing;Yu, Mengjie;Fu, Xianglong;Xie, Tongtong;Pang, Zhiyuan;Liu, Yanan;Wang, Yangang. And the article was included in Catalysis Letters in 2022.Recommanded Product: Sodium tetrachloropalladate(II) The following contents are mentioned in the article:

Abstract: Heterogeneous catalytic hydrogenation reactions are of great significance in chem. industry. In this work, ultrasmall Pd nanoparticles (NPs) supported on porous g-C₃N₄ nanosheets (Pd/CN) have been prepared for efficient hydrogenation reactions. The special structure of the catalytic metal-semiconductor heterojunction not only stabilize the Pd NPs but also improve their electronic activation. In addition, the high surface area of Pd/CN provides a large numbers of adsorption sites for styrene and H₂. As a result, the optimized Pd/CN-0.5 nanocomposites achieved 100% conversion of styrene in 60 min under mild conditions. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Recommanded Product: Sodium tetrachloropalladate(II)).

Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Recommanded Product: Sodium tetrachloropalladate(II)

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Discovery of putative anti-Kudoaseptempunctata chemical agents by comprehensive assay was written by Ohnishi, Takahiro;Furuya, Akemi;Arai, Sakura;Yoshinari, Tomoya;Goto, Keiichi;Hara-Kudo, Yukiko. And the article was included in Shokuhin Eiseigaku Zasshi in 2020.Recommanded Product: 5137-55-3 The following contents are mentioned in the article:

We screened 360 chems. and discovered that 71 chems. had anti-Kudoa septempunctata effect. Especially 19 and seven of 71 chems. were antibiotics and antibacterial agents/disinfectants, resp. The other 45 chems. were pesticides, natural toxins, industrial chems. and medicines for non-infectious diseases. Nineteen antibiotics that possessed anti-Kudoa effect contained four tetracyclines, one steroid, two macrolides, one aminoglycoside, three, β-lactams, one quinolone, two rifamycines, one polyene, one novobiocine, one sulfonamide and two nitroimidazoles. To use these drugs for prevention of Kudoa infection, the further study is need for the determination of ED. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Recommanded Product: 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Recommanded Product: 5137-55-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reactions of aniline in acetic acid solutions containing cyanuric chloride and hydrogen chloride acceptors was written by Kolmakov, Kirill A.. And the article was included in Canadian Journal of Chemistry in 2007.Recommanded Product: 2272-40-4 The following contents are mentioned in the article:

Two reaction pathways in acetic acid solution containing cyanuric chloride, aniline, and some hydrogen chloride acceptors (triethylamine, sodium acetate, pyridine) were studied. Both aryl amination and acylation can be performed with high yields under proper reaction conditions. Contrary to the only known literature report on the reactions between carbonic acids and cyanuric chloride in the presence of a hydrogen chloride acceptor (triethylamine), it was established that acid chlorides are not formed. A scheme involving the replacement of chlorine atoms by acetate ion in the initial stage was proposed for the acylation of aniline promoted by cyanuric chloride. This study involved multiple reactions and reactants, such as 4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4Recommanded Product: 2272-40-4).

4,6-Dichloro-N-phenyl-1,3,5-triazin-2-amine (cas: 2272-40-4) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Recommanded Product: 2272-40-4

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis of new symmetric cyclic and acyclic halocurcumin analogues typical precursors for hybridization was written by Noureddin, Sawsan A.;El-Shishtawy, Reda M.;Al-Footy, Khalid O.. And the article was included in Research on Chemical Intermediates in 2020.SDS of cas: 6294-17-3 The following contents are mentioned in the article:

Starting from vanillin as a naturally occurring compound, several O-haloalkyl derivatives I (n = 3, X = Br; n = 6, X = Cl) have been synthesized and characterized. These derivatives I were subjected to Knoevenagel condensation reaction with cyclohexanone, acetone and acetylacetone to afford the corresponding sym. acyclic and cyclic halocurcumin analogs II, III and IV, resp. The chem. structures of the newly synthesized compounds were confirmed using spectroscopic techniques. These analogs, having primary halogen on both sides, are typical precursors of hybrid curcumin analogs. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3SDS of cas: 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.SDS of cas: 6294-17-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics