Month: November 2022

Liu, Xuan-Yu; Li, Xiang-Rui; Zhang, Chen; Chu, Xue-Qiang; Rao, Weidong; Loh, Teck-Peng; Shen, Zhi-Liang published their research in Organic Letters on August 2 ,2019. The article was titled 《Iron(0)-Mediated Reformatsky Reaction for the Synthesis of β-Hydroxyl Carbonyl Compounds》.Recommanded Product: 401-55-8 The article contains the following contents:

An efficient, economical, and practical Reformatskii reaction of α-halo carbonyl compounds with aldehydes/ketones by using cheap and com. iron(0) powder as reaction mediator is developed. The reactions proceeded effectively in the presence of a catalytic amount of iodine (20 mol %) to afford the synthetically useful β-hydroxyl carbonyl compounds in moderate to good yields.Ethylbromofluoroacetate(cas: 401-55-8Recommanded Product: 401-55-8) was used in this study.

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Recommanded Product: 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sun, Ze-Ying; Zhou, Sen; Yang, Kai; Guo, Minjie; Zhao, Wentao; Tang, Xiangyang; Wang, Guangwei published their research in Organic Letters on August 7 ,2020. The article was titled 《Tetrahydroxydiboron-Promoted Radical Addition of Alkynols》.Recommanded Product: 401-55-8 The article contains the following contents:

Tetrahydroxydiboron has previously been used as a borylation or reducing reagent in organic synthesis. Herein, we present a novel tetrahydroxydiboron-promoted radical addition of internal alkynes followed by intramol. oxidation of alc. through 1,5-hydrogen atom transfer. Preliminary mechanistic studies showed that the process might be initiated through N,N-dimethylformamide-assisted homolytic cleavage of tetrahydroxydiboron. This process provides a convenient synthesis of fluoroalkyl-substituted alkenes with a pendant aldehyde or ketone moiety. In the experimental materials used by the author, we found Ethylbromofluoroacetate(cas: 401-55-8Recommanded Product: 401-55-8)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Recommanded Product: 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tang, Wei-Ke; Xu, Zhuo-Wei; Xu, Jun; Tang, Fei; Li, Xiao-Xuan; Dai, Jian-Jun; Xu, Hua-Jian; Feng, Yi-Si published an article in Organic Letters. The title of the article was 《Irradiation-Induced Cobaloxime-Catalyzed C-H Monofluoroalkylation of Styrenes at Room Temperature》.Application of 401-55-8 The author mentioned the following in the article:

A cobaloxime-catalyzed photochem. synthesis of allyl monofluorides from styrenes is described herein. This method is characterized by mild reaction conditions, low-cost catalyst, and broad substrate scope. Furthermore, this convenient method will provide a facile synthesis toward novel monofluoroalkylated natural product and pharmaceutical derivatives Mechanistic investigations indicate that a monofluoroalkyl radical is involved in the catalytic cycle. The experimental process involved the reaction of Ethylbromofluoroacetate(cas: 401-55-8Application of 401-55-8)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Application of 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2015,Sabitha, Gowravaram; Shankaraiah, Kontham; Sindhu, Kancherla; Latha, Bejawada Madhavi published 《Bismuth(III) Chloride Catalyzed Intramolecular Hetero-Diels-Alder Reaction: Access to cis-Fused Angular Hexahydrobenzo[c]acridines》.Synthesis published the findings.Product Details of 626-40-4 The information in the text is summarized as follows:

New polycyclic hexahydrobenzo[c]acridines were synthesized in excellent yields by intramol. [4+2]-cycloaddition reactions of aldimines derived from aromatic amines and 2-(4-methylpent-3-en-1-yl)benzaldehyde in acetonitrile in the presence of 10 mol% of bismuth(III) chloride. The reaction is highly diastereoselective, giving cis-fused benzoacridine derivatives preferentially. In addition to this study using 3,5-Dibromoaniline, there are many other studies that have used 3,5-Dibromoaniline(cas: 626-40-4Product Details of 626-40-4) was used in this study.

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Product Details of 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Morera, Ludovica; Roatsch, Martin; Fuerst, Michael C. D.; Hoffmann, Inga; Senger, Johanna; Hau, Mirjam; Franz, Henriette; Schuele, Roland; Heinrich, Markus R.; Jung, Manfred published 《4-Biphenylalanine- and 3-Phenyltyrosine-Derived Hydroxamic Acids as Inhibitors of the JumonjiC-Domain-Containing Histone Demethylase KDM4A》.ChemMedChem published the findings.Formula: C4H7BrO2 The information in the text is summarized as follows:

Overexpression of the histone lysine demethylase KDM4A, which regulates H3K9 and H3K36 methylation states, has been related to the pathol. of several human cancers. We found that a previously reported hydroxamate-based histone deacetylase (HDAC) inhibitor (SW55) was also able to weakly inhibit this demethylase with an IC50 value of 25.4 μm. Herein we report the synthesis and biochem. evaluations, with two orthogonal in vitro assays, of a series of derivatives of this lead structure. With extensive chem. modifications on the lead structure, also by exploiting the versatility of the radical arylation with aryldiazonium salts, we were able to increase the potency of the derivatives against KDM4A to the low-micromolar range and, more importantly, to obtain demethylase selectivity with respect to HDACs. Cell-permeable derivatives clearly showed a demethylase-inhibition-dependent antiproliferative effect against HL-60 human promyelocytic leukemia cells. In the experiment, the researchers used Methyl 3-bromopropanoate(cas: 3395-91-3Formula: C4H7BrO2)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents.Formula: C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Kita, Yuji; Yata, Tetsuji; Nishimoto, Yoshihiro; Chiba, Kouji; Yasuda, Makoto published 《Selective oxymetalation of terminal alkynes via 6-endo cyclization: mechanistic investigation and application to the efficient synthesis of 4-substituted isocoumarins》.Chemical Science published the findings.Synthetic Route of Br3In The information in the text is summarized as follows:

Herein, a novel cyclic oxymetalation of 2-alkynylbenzoate with indium or gallium salts that proceeds with an unusual regioselectivity to give isocoumarins bearing a carbon-metal bond at the 4-position was reported. Indium and gallium salts showed high performance in the selective 6-endo cyclization of terminal alkynes while boron or other metals such as Al, Au, and Ag caused 5-exo cyclization or decomposition of terminal alkynes, resp. The metalated isocoumarin and its reaction intermediate were unambiguously identified by X-ray crystallog. anal. The theor. calculation of potential energy profiles showed that oxyindation could proceed via 6-endo cyclization under thermodn. control while previously reported oxyboration would give a 5-membered ring under kinetic control. The investigation of electrostatic potential maps suggested that the differences in the at. characters of indium, boron and their ligands would contribute to such a regioselective switch. and metalated isocoumarins were applied to organic synthetic reactions. The halogenation of metalated isocoumarins proceeded to afford 4-halogenated isocoumarins bearing various functional groups and palladium-catalyzed cross coupling of organometallic species with organic halides gave various 4-substituted isocoumarins. A formal total synthesis of oosponol, which exhibits strong antifungal activity, was accomplished. In addition to this study using Indium(III) bromide, there are many other studies that have used Indium(III) bromide(cas: 13465-09-3Synthetic Route of Br3In) was used in this study.

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Synthetic Route of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Tetrahedron included an article by Rashad, Adel A.; Neyts, Johan; Leyssen, Pieter; Keller, Paul A.. Category: bromides-buliding-blocks. The article was titled 《A reassessment of mycophenolic acid as a lead compound for the development of inhibitors of Chikungunya virus replication》. The information in the text is summarized as follows:

Mycophenolic acid (MPA) has been previously reported as an inhibitor of the Chikugunya virus (CHIKV) with an EC50 value of 0.2 μM. We used MPA as a lead compound designing and synthesizing a series of isatins and benzolactones in a typical medicinal chem. program. The synthesis and testing of 19 derivatives produced compounds with no desired activity which prompted us to retest the lead compound, MPA. We can reveal that MPA shows no anti-CHIKV activity and therefore needs to be reassessed as a lead compound for this target. In addition to this study using 3-Bromo-2-methylbenzoic acid, there are many other studies that have used 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Category: bromides-buliding-blocks) was used in this study.

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Category: bromides-buliding-blocks Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Synthesis included an article by Iskryk, Marharyta; Barysevich, Maryia; Oseka, Maksim; Adamson, Jasper; Kananovich, Dzmitry. Synthetic Route of C7H13BrO2. The article was titled 《Asymmetric Kulinkovich Hydroxycyclopropanation of Alkenes Mediated by Titanium(IV) TADDOLate Complexes》. The information in the text is summarized as follows:

Asym. Kulinkovich cyclopropanation of carboxylic esters with prochiral alkenes was reported. The process was mediated by titanium(IV) (4R,5R)-TADDOLate complexes and afforded correspondingly (Z)- or (E)-cyclopropanols with up to 84-87% ee in the event of intra- or intermol. olefin ligand exchange in intermediate titanacyclopropane [titanium(II)-alkene] species. Configuration of the olefin double bond was preserved in the cyclopropane products, pointing out on total retention of configuration at Ti-C bond in the cyclopropane forming step. The results were interpreted in the framework of ate complex mechanism, suggesting formation of pentacoordinated titanium ate species as a prerequisite of high enantiocontrol. The experimental part of the paper was very detailed, including the reaction process of Ethyl 5-bromovalerate(cas: 14660-52-7Synthetic Route of C7H13BrO2)

Ethyl 5-bromovalerate(cas: 14660-52-7) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents.Synthetic Route of C7H13BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Langmuir included an article by Almeida, Marcio M.; Perez, Katia R.; Faig, Allison; Uhrich, Kathryn E.; Riske, Karin A.. SDS of cas: 17696-11-6. The article was titled 《Location of the Positive Charges in Cationic Amphiphiles Modulates Their Mechanism of Action against Model Membranes》. The information in the text is summarized as follows:

Synthetic cationic amphiphiles (CAms) with physicochem. properties similar to antimicrobial peptides are promising mols. in the search for alternative antibiotics to which pathogens cannot easily develop resistance. Here, we investigate two types of CAms based on tartaric acid and containing two hydrophobic chains (of 7 or 11 carbons) and two pos. charges, located either at the end of the acyl chains (bola-like, B7 and B11) or at the tartaric acid backbone (gemini-like, G7 and G11). The interaction of the CAms with biomimetic membrane models (anionic and neutral liposomes) was studied with zeta potential and dynamic light scattering measurements, isothermal titration calorimetry, and a fluorescent-based leakage assay. We show that the type of mol. determines the mechanism of action of the CAms. Gemini-like mols. (G7 and G11) interact mainly via electrostatics (exothermic process) and reside in the external vesicle leaflet, altering substantially the vesicle surface potential but not causing significant membrane lysis. On the other hand, the interaction of bola-like CAms (B7 and B11) is endothermic and thus entropy-driven, and these mols. reach both membrane leaflets and cause substantial membrane permeabilization, likely after clustering of anionic lipids. The lytic ability is clearly higher against anionic membranes as compared with neutral membranes. Within each class of mol., longer alkyl chains (i.e., B11 and G11) exhibit higher affinity and lytic ability. Overall, the mol. B11 exhibits a high potential as antimicrobial agent, since it has a high membrane affinity and causes substantial membrane permeabilization. The results came from multiple reactions, including the reaction of 8-Bromooctanoic acid(cas: 17696-11-6SDS of cas: 17696-11-6)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.SDS of cas: 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Nanotechnology included an article by Wu, Hongshuai; You, Chaoqun; Jiao, Jia; Chen, Fanghui; Sun, Baiwang; Zhu, Xiaoli. SDS of cas: 2623-87-2. The article was titled 《A novel near-infrared triggered dual-targeted nanoplatform for mitochondrial combined photothermal-chemotherapy of cancer in vitro》. The information in the text is summarized as follows:

A combination of photothermal-chemotherapy has received widespread attention in drug delivery systems for cancer treatment. However, the combination therapy operated in subcellular organelles, such as mitochondria, has been rarely reported. Herein, we designed a novel near-IR (NIR) triggered dual-targeted nanoplatform (FA/TPP-DINPs) based on mitochondrial combined photothermal-chemotherapy by co-loading FDA-approved NIR dye indocyanine green (ICG) and anticancer drug doxorubicin (DOX). The resulting nanoparticles showed a monodispersed sphere and excellent colloidal stability. Specially, the simultaneous introduction of targeted ligands folic acid (FA) and triphenylphosphine (TPP) to nanoparticles significantly promoted the cellular internalization and mitochondrial co-localization of nanoparticles. Moreover, the encapsulated dye could convert NIR light into heat with high efficiency, which makes the FA/TPP-DINPs an effective platform for mitochondrial combination therapy with chemotherapy drug DOX. Meanwhile, the thermal expansion in response to the change of temperature after sustained 808 nm laser irradiation could cause the disintegration of nanoparticles, which triggered the rapid release of DOX from nanoparticles. As expected, the prepared FA/TPP-DINPs exhibited evidently enhanced cytotoxicity and preeminent combination therapy efficiency on MCF-7 cells. Thus, the NIR triggered dual-targeted nanoplatform provides a new drug delivery strategy for mitochondrial combined photothermal-chemotherapy of cancer. The experimental process involved the reaction of 4-Bromobutanoic acid(cas: 2623-87-2SDS of cas: 2623-87-2)

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).SDS of cas: 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary