Month: January 2023

8-Aminoquinolines as anticoccidials – part III was written by Armer, Richard E.;Barlow, Jacqueline S.;Chopra, Narinder;Dutton, Christopher J.;Greenway, David H. J.;Greenwood, Sean D. W.;Lad, Nita;Shaw, Jonothan;Thompson, Adrian P.;Thong, Kam-Wah;Tommasini, Ivan. And the article was included in Bioorganic & Medicinal Chemistry Letters in 1999.Application In Synthesis of N-(5-Bromopentyl)phthalimide This article mentions the following:

Analogs of the antimalarial pentaquine I in which the nature of the side-chain on the 8-amino position was varied, were prepared and evaluated for anticoccidial activity both in vitro and in vivo. Specifically, both the inter-nitrogen distance and the nature of the terminal amino group were investigated. Novel analogs of equal or improved efficacy in vitro and in vivo to pentaquine were discovered. In the experiment, the researchers used many compounds, for example, N-(5-Bromopentyl)phthalimide (cas: 954-81-4Application In Synthesis of N-(5-Bromopentyl)phthalimide).

N-(5-Bromopentyl)phthalimide (cas: 954-81-4) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Application In Synthesis of N-(5-Bromopentyl)phthalimide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Identification of Transthyretin Tetramer Kinetic Stabilizers That Are Capable of Inhibiting the Retinol-Dependent Retinol Binding Protein 4-Transthyretin Interaction: Potential Novel Therapeutics for Macular Degeneration, Transthyretin Amyloidosis, and Their Common Age-Related Comorbidities was written by Cioffi, Christopher L.;Raja, Arun;Muthuraman, Parthasarathy;Jayaraman, Aravindan;Jayakumar, Srinivasan;Varadi, Andras;Racz, Boglarka;Petrukhin, Konstantin. And the article was included in Journal of Medicinal Chemistry in 2021.HPLC of Formula: 82702-31-6 This article mentions the following:

Dissociation of transthyretin (TTR) tetramers may lead to misfolding and aggregation of proamyloidogenic monomers, which underlies TTR amyloidosis (ATTR) pathophysiol. ATTR is a progressive disease resulting from the deposition of toxic fibrils in tissues that predominantly presents clin. as amyloid cardiomyopathy and peripheral polyneuropathy. Ligands that bind to and kinetically stabilize TTR tetramers prohibit their dissociation and may prevent ATTR onset. Drawing from clin. investigated AG10, we designed a constrained congener (14) that exhibits excellent TTR tetramer binding potency, prevents TTR aggregation in a gel-based assay, and possesses desirable pharmacokinetics in mice. Addnl., 14 significantly lowers murine serum retinol binding protein 4 (RBP4) levels despite a lack of binding at that protein′s all-trans-retinol site. We hypothesize that kinetic stabilization of TTR tetramers via14 is allosterically hindering all-trans-retinol-dependent RBP4-TTR tertiary complex formation and that the compound could present ancillary therapeutic utility for indications treated with RBP4 antagonists, such as macular degeneration. In the experiment, the researchers used many compounds, for example, Methyl 3-bromo-4-fluorobenzoate (cas: 82702-31-6HPLC of Formula: 82702-31-6).

Methyl 3-bromo-4-fluorobenzoate (cas: 82702-31-6) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.HPLC of Formula: 82702-31-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In situ Catalytic Generation of Allylcopper Species for Asymmetric Allylation: Toward 1H-Isochromene Skeletons was written by Kawai, Junya;Chikkade, Prasanna Kumara;Shimizu, Yohei;Kanai, Motomu. And the article was included in Angewandte Chemie, International Edition in 2013.Recommanded Product: 653-92-9 This article mentions the following:

Allylcopper species can be generated in situ via catalytic intramol. oxycupration of allenic alc. The allylcopper can react with various aldehydes and a ketone to give 1H-isochromene derivatives enantioselectively. The protocol is atom-economical, highly regioselective, stereoconvergent, and tolerant to free OH groups. Thus, e.g., enantio- and regioselective oxycupration/asym. addition cascade reaction of allenic alc. I with benzaldehyde in presence of mesitylcopper and chiral diphosphine ligand in HMPA/THF afforded isochromene II (98% yield, 92% ee). In the experiment, the researchers used many compounds, for example, Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9Recommanded Product: 653-92-9).

Methyl 2-bromo-4-fluorobenzoate (cas: 653-92-9) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Recommanded Product: 653-92-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

4,8,9-Tribromofluoranthene was written by Campbell, Neil;Leadill, W. K.;Wilshire, J. F. K.. And the article was included in Journal of the Chemical Society in 1952.Synthetic Route of C10H8Br2O4 This article mentions the following:

The tribromofluoranthene obtained by bromination of fluoranthene is the 4,8,9-isomer (C.A. numbering). Thus to 10 g. 4,9-dibromofluoranthene, 6.8 g. AcBr, and 50 mL. CS₂ stirred at 0° was added 11.0 g. AlCl₃, the mixture poured after 72 h. at room temperature into cold concentrated HCl, and the CS₂ removed on a steam bath, yielding 10 g. crude product, m. 130-45°. Chromatog. separation gave 8-acetyl-4,9-dibromofluoranthene (I), yellow prisms, m. 159-62°. I added to a solution prepared from Br and 3N NaOH at 0°, the mixture stirred 22 h. at 60°, filtered, and the residue washed, dried, and boiled with C₆H₆, then with concentrated HCl, yielded 4,9-dibromo-8-fluoranthenecarboxylic acid (II), m. 306-8°; Me ester, m. 190-1°. II boiled with 10% alc. KOH and Ni-Al alloy yielded 8-fluoranthene carboxylic acid, m. 284-7°; Me ester m. 93-4°. I with NaN₃ gave 8-acetamido-4,9-dibromofluoranthene, m. 284-8°; addition of HBr gave 8-amino-4,9-dibromofluoranthene-HBr, m. 245-6°, which with aqueous NH₃ yielded the amine (III), m. 256-8°. III boiled with AcOH, cooled, poured into NaNO₂ in H₂SO₄, and the solution added to CuBr solution in HBr yielded 4,8,9-tribromofluoranthene (IV), m. 208-10.5°. Oxidation of IV with Na₂Cr₂O₇ under various conditions gave 4,5,1,2-Br₂C₆H₂(CO₂H)₂, m. 200-1° (di-Me ester, m. 78-9°); 6,7-dibromo-, m. 277-9°, and 2,6,7-tribromo-9-oxo-1-fluorenecarboxylic acid, m. 317-20°. In the experiment, the researchers used many compounds, for example, Dimethyl 4,5-dibromophthalate (cas: 859299-66-4Synthetic Route of C10H8Br2O4).

Dimethyl 4,5-dibromophthalate (cas: 859299-66-4) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Synthetic Route of C10H8Br2O4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mononuclear Copper(II)-Superoxo Complexes that Mimic the Structure and Reactivity of the Active Centers of PHM and DβM was written by Kunishita, Atsushi;Kubo, Minoru;Sugimoto, Hideki;Ogura, Takashi;Sato, Kazunobu;Takui, Takeji;Itoh, Shinobu. And the article was included in Journal of the American Chemical Society in 2009.HPLC of Formula: 14425-64-0 This article mentions the following:

Mononuclear Cu(II)-superoxo complexes 2^X-OO^{â€?/sup> (I) having triplet (S = 1) ground states were obtained via reaction of O₂ with the Cu(I) starting materials 1X (II) supported by tridentate ligands LX [1-(2-p-X-phenethyl)-5-(2-pyridin-2-ylethyl)-1,5-diazacyclooctane; X = CH₃, H, NO₂] in various solvents. The superoxo complexes 2X-OOâ€?/sup> (I) mimic the structure [tetrahedral geometry with an end-on (η1)-bound O₂â€?] and the aliphatic C-H bond activation chem. of peptidylglycine α-hydroxylating monooxygenase and dopamine β-monooxygenase. In the experiment, the researchers used many compounds, for example, 1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0HPLC of Formula: 14425-64-0).}

1-(2-Bromoethyl)-4-methoxybenzene (cas: 14425-64-0) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.HPLC of Formula: 14425-64-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Influence of Chain Rigidity and Dielectric Constant on the Glass Transition Temperature in Polymerized Ionic Liquids was written by Bocharova, V.;Wojnarowska, Z.;Cao, Peng-Fei;Fu, Y.;Kumar, R.;Li, Bingrui;Novikov, V. N.;Zhao, S.;Kisliuk, A.;Saito, T.;Mays, Jimmy W.;Sumpter, B. G.;Sokolov, A. P.. And the article was included in Journal of Physical Chemistry B in 2017.Formula: C5H11BrO This article mentions the following:

Polymerized ionic liquids (PolyILs) are promising candidates for a wide range of technol. applications due to their single ion conductivity and good mech. properties. Tuning the glass transition temperature (T_g) in these materials constitutes a major strategy to improve room temperature conductivity while controlling their mech. properties. In this work, we show exptl. and simulation results demonstrating that in these materials T_g does not follow a universal scaling behavior with the volume of the structural units V_m (including monomer and counterion). Instead, T_g is significantly influenced by the chain flexibility and polymer dielec. constant We propose a simplified empirical model that includes the electrostatic interactions and chain flexibility to describe T_g in PolyILs. Our model enables design of new functional PolyILs with the desired T_g. In the experiment, the researchers used many compounds, for example, 1-Bromo-4-methoxybutane (cas: 4457-67-4Formula: C5H11BrO).

1-Bromo-4-methoxybutane (cas: 4457-67-4) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Formula: C5H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The First Fluorescent Diboronic Acid Sensor Specific for Hepatocellular Carcinoma Cells Expressing Sialyl Lewis X was written by Yang, Wenqian;Fan, Haiying;Gao, Xingming;Gao, Shouhai;Karnati, Vishnu Vardhan Reddy;Ni, Weijuan;Hooks, W. Borden;Carson, John;Weston, Brent;Wang, Binghe. And the article was included in Chemistry & Biology in 2004.Recommanded Product: 166821-88-1 This article mentions the following:

Carbohydrate antigens with subterminal fucosylation have been implicated in the development and progression of several cancers, including hepatocellular carcinoma (HCC). Fluorescent sensors targeting fucosylated carbohydrate antigens could potentially be used for diagnostic and other applications. The authors have designed and synthesized a series of 26 diboronic acid compounds as potential fluorescent sensors for such carbohydrates. Among these compounds, 7q was able to fluorescently label cells expressing high levels of sLex (HEPG2) within a concentration range of 0.5 to 10 μM. This compound (7q) did not label cells expressing Lewis Y (HEP3B), nor cells without fucosylated antigens (COS7). This represents the first example of a fluorescent compound labeling cells based on cell surface carbohydrate structures. In the experiment, the researchers used many compounds, for example, 2-(2-(Bromomethyl)phenyl)-5,5-dimethyl-1,3,2-dioxaborinane (cas: 166821-88-1Recommanded Product: 166821-88-1).

2-(2-(Bromomethyl)phenyl)-5,5-dimethyl-1,3,2-dioxaborinane (cas: 166821-88-1) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Recommanded Product: 166821-88-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Meso-π-extended/deficient BODIPYs and low-band-gap donor-acceptor copolymers for organic optoelectronics was written by Can, Ayse;Choi, Gi-Seok;Ozdemir, Resul;Park, Soyoon;Park, Jin Su;Lee, Yongchul;Deneme, Ibrahim;Mutlugun, Evren;Kim, Choongik;Kim, Bumjoon J.;Usta, Hakan. And the article was included in ACS Applied Polymer Materials in 2022.Quality Control of 1-Bromopyrrolidine-2,5-dione This article mentions the following:

The realization of π-deficient acceptors and their donor-acceptor copolymers has become a key research focus for the realization of versatile organic optoelectronic materials and devices. Herein, we demonstrate the theor. design, synthesis, and physicochem./optoelectronic characterization of two meso-π-extended/deficient BODIPY building blocks (2OD-T2BDY and 2OD-TTzBDY) and a library of donor-acceptor copolymers with low band gap (E_g = 1.30-1.35 eV) based on these building blocks. These building blocks, to the best of our knowledge, are the first examples of BODIPYs with meso-π-extension. A library of BODIPY building blocks with varied meso units/substituents is studied to reveal the meso effects on the semiconducting BODIPY′s optoelectronic properties. The building blocks showed favorable π-acceptor electronic/structural properties with meso-π-delocalized and stabilized LUMOs (ca. -3.6 eV) and large ground-state dipole moments of 4.9-5.5 D. Consistent with the theor./exptl. π-electronic structures, all copolymers functioned as p-type semiconductors in field-effect transistors and as donor materials in the bulk heterojunction organic photovoltaics. Power conversion efficiencies of up to 4.4% with a short-circuit current of 12.07 mA cm^-2 were achieved. This study demonstrates a unique meso-π-extension strategy to realize BODIPYs with favorable π-acceptor properties, and our findings could open up future materials design avenues in various organic optoelectronic applications. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Quality Control of 1-Bromopyrrolidine-2,5-dione).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. 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. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Quality Control of 1-Bromopyrrolidine-2,5-dione

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Development and Mechanistic Investigations of Enantioselective Pd-Catalyzed Intermolecular Hydroaminations of Internal Dienes was written by Park, Sangjune;Malcolmson, Steven J.. And the article was included in ACS Catalysis in 2018.Name: Isopentyltriphenylphosphonium bromide This article mentions the following:

We report the development of highly enantio- and regioselective Pd-catalyzed intermol. hydroaminations of challenging 1,4-disubstituted acyclic dienes. Several aryl/alkyl-disubstituted dienes and a sterically differentiated alkyl/alkyl-disubstituted diene undergo coupling with a variety of secondary aliphatic amines, indoline, and primary anilines to generate allylic amines with myriad α-alkyl groups in up to 78% yield, >98:2 rr, and 98.5:1.5 er. A number of experiments, including deuterium labeling and transamination studies, shed light on mechanistic details of the reaction, such as the reversibility of individual steps of the proposed catalytic cycle and of the reaction as a whole. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Name: Isopentyltriphenylphosphonium bromide).

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Name: Isopentyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Syntheses of 3-furyl, 3-thienyl and 3-selenienyl propenoic acids and esters. A route to substituted thienothiophenes and selenolothiophenes was written by Capron, Bernard;Paulmier, Claude;Pastour, Paul. And the article was included in Bulletin de la Societe Chimique de France in 1975.Safety of 5-Bromothiophene-3-carbaldehyde This article mentions the following:

3-(Furyl, thienyl, or selenienyl)propenoic acids were prepared by modified Wittig reaction of the heterocyclic aldehydes and were cyclized with SOCl2 to give condensed thiophenes. In the experiment, the researchers used many compounds, for example, 5-Bromothiophene-3-carbaldehyde (cas: 18791-79-2Safety of 5-Bromothiophene-3-carbaldehyde).

5-Bromothiophene-3-carbaldehyde (cas: 18791-79-2) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Safety of 5-Bromothiophene-3-carbaldehyde

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary