Category: bromides-buliding-blocks

Yoshida, Tatsuki published the artcileN-Methylphenothiazine S-Oxide Enabled Oxidative C(sp²)-C(sp²) Coupling of Boronic Acids with Organolithiums via Phenothiaziniums, Quality Control of 849062-12-0, the publication is Organic Letters (2021), 23(24), 9664-9668, database is CAplus and MEDLINE.

The development of a transition-metal-free oxidative C(sp²)-C(sp²) coupling of readily available boronic acids RB(OH)₂ (R = Ph, 2-naphthyl, 1-hexenyl, 2-(4-bromophenyl)vinyl, etc.) and organolithiums R¹Li (R¹ = 4-bromophenyl, vinyl, 2-naphthyl, etc.) via phenothiazinium ions I was reported. Various biaryl, styrene, and diene derivatives RR¹ were obtained using this reaction system. The key to this process is N-methylphenothiazine S-oxide (PTZSO), which allows efficient conversion of boronic acids to phenothiazinium ions I. The mechanism of phenothiazinium formation using PTZSO was investigated using theor. calculations and experiments, which provided insight into the unique reactivity of PTZSO.

Organic Letters published new progress about 849062-12-0. 849062-12-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is (3-Bromo-5-methoxyphenyl)boronic acid, and the molecular formula is C4H4N2O2, Quality Control of 849062-12-0.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Matsuzawa, Tsubasa published the artcileTransition-Metal-Free Synthesis of N-Arylphenothiazines through an N- and S-Arylation Sequence, Computed Properties of 89694-44-0, the publication is Organic Letters (2021), 23(6), 2347-2352, database is CAplus and MEDLINE.

An efficient synthetic method of N-arylphenothiazines, e.g., I, from o-sulfanylanilines under transition-metal-free conditions is disclosed. An N- and S-arylation sequence of o-sulfanylanilines enabled the authors to synthesize a wide variety of N-arylphenothiazines. In particular, one-pot synthesis of N-arylphenothiazines was accomplished from easily available modules through preparation of o-sulfanylanilines by thioamination of aryne intermediates and following N- and S-arylation sequence.

Organic Letters published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Computed Properties of 89694-44-0.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kaplan, Justin M. published the artcileScalable and Chemoselective Synthesis of γ-Keto Esters and Acids via Pd-Catalyzed Carbonylation of Cyclic β-Chloro Enones, SDS of cas: 76283-09-5, the publication is Organometallics (2019), 38(1), 85-96, database is CAplus.

The Pd-catalyzed carbonylation of cyclic β-chloro enones using simple phosphine ligands is described. Screening identified P(Me)(t-Bu)₂ as the most general ligand for an array of chloro enone electrophiles. The reaction scope was evaluated on a milligram scale across 80 examples, with excellent reactivity observed in nearly every case. Carbonylation can be achieved even in the presence of potentially sensitive or inhibitory functional groups, including basic nitrogens as well as aryl chlorides or bromides. Twenty examples were run on a gram scale, demonstrating scalability and practical utility. Using P(Me)(t-Bu)₂, the reaction rate depends on both nucleophile and electrophile identity, with completion times varying between 3 and >18 h under a standard set of conditions. Switching to P(t-Bu)₃ for the carbonylation of 3-chlorocyclohex-2-enone with MeOH results in a dramatic rate increase, enabling effective catalysis with kinetics consistent with rate-limiting mass transfer. Stoichiometric oxidative addition of 3-chlorocyclohex-2-enone and 3-oxocyclohex-1-enecarbonyl chloride to both Pd[P(t-Bu)₃]₂ and Pd(PCy₃)₂ has enabled characterization and isolation of several potential catalytic intermediates, including Pd-vinyl and Pd-acyl species supported by P(t-Bu)₃ and PCy₃ ligands. Monitoring the oxidative addition of 3-chlorocyclohex-2-enone to Pd(PCy₃)₂ by NMR spectroscopy indicates that coordination of the alkene precedes oxidative addition As a result of these studies, Me 3-oxocyclohex-1-enecarboxylate was synthesized via Pd-catalyzed carbonylation of 3-chlorocyclohex-2-enone in 90% yield on a 60 g scale with only 0.5 mol % catalyst loading.

Organometallics published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, SDS of cas: 76283-09-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chen, Chiu-Hsiang published the artcileSynthesis and Characterization of Bridged Bithiophene-Based Conjugated Polymers for Photovoltaic Applications: Acceptor Strength and Ternary Blends, Application In Synthesis of 52431-30-8, the publication is Macromolecules (Washington, DC, United States) (2010), 43(2), 697-708, database is CAplus.

Six of three-component donor-acceptor random copolymers P1-P6, symbolized as (thiophene donor)_m-(thiophene acceptor)_n, were rationally designed and successfully synthesized by the palladium-catalyzed Stille coupling. The 4H-cyclopenta[2,1-b:3,4-b’]dithiophene (CPDT) unit serves as the donor for P1-P4, while the benzothiadiazole (BT), quinoxaline (QU), dithienoquinoxaline, and thienopyrazine (TP) units are used as the acceptor for P1, P2, P3, and P4, resp. P5 and P6 are structurally analogous to P1 and P2 except for using the dithieno[3,2-b:2′,3′-d]silole (DTS) unit as the donor. Because the band gap lowering ability of the acceptor units in the polymer is in the order TP > BT > QU presumably due to the quinoid form population in the polymers, the optical band gaps can be well adjusted to be 1.2, 1.6, and 1.8 eV for P4, P1, and P2, resp. It is found that the two bridged bithiophene units, CPDT and DTS, have similar steric and electronic effects on the P1 and P5 as well as P2 and P6, resp., leading to comparable intrinsic properties and device performances. Bulk heterojunction photovoltaic cells based on ITO/PEDOT:PSS/polymer:PC₇₁BM/Ca/Al configuration were fabricated and characterized. Although P4 exhibits the lowest optical band gap, broadest absorption spectrum, and highest mobility, the too low-lying LUMO level hinders the efficient exciton dissociation, resulting in a low PCE of 0.7%. Compared with poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b’]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT), random copolymer P1 shows more blue-shifted, broader absorption spectrum, comparable mobility, and a higher PCE of 2.0%. In view of the fact that P1 shows a higher band gap with strong absorption in visible region, while PCPDTBT has a lower band gap to mainly absorb NIR light, a BHJ device with the active layer containing ternary blend of PCPDTBT/P1/PC₇₁BM was investigated and achieved an enhanced PCE of 2.5%, which outperforms the devices based on the binary blending systems of PCPDTBT/PC₇₁BM (PCE = 1.4%) or P1/PC₇₁BM (PCE = 2.0%) under the identical conditions. Such an improvement is ascribed to the complementary absorption and compatible structure of P1 and PCPDTBT polymers.

Macromolecules (Washington, DC, United States) published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Application In Synthesis of 52431-30-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Lin, Tzu-Chau published the artcileSynthesis and two-photon properties of a multipolar chromophore containing indenofluorenyl units, COA of Formula: C10H16Br3N, the publication is Tetrahedron Letters (2009), 50(2), 182-185, database is CAplus.

A new multipolar fluorophore derived from triphenylamine as the core with diphenylaminoindenofluorenyl moieties incorporated at the peripheral positions has been synthesized and exptl. shown to possess strong two-photon absorptivities in near-IR region and intense upconverted visible emission under the irradiation of femtosecond laser pulses.

Tetrahedron Letters published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, COA of Formula: C10H16Br3N.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Herron, Alastair N. published the artcileδ-C-H Halogenation Reactions Enabled by a Nitrogen-Centered Radical Precursor, Application of 1-Bromooctane, the publication is Organic Letters (2022), 24(20), 3652-3656, database is CAplus and MEDLINE.

Herein, new hydrazonyl carboxylic acids RN(S(O)₂R¹)N=C(Me)C(O)OH (R = octyl, 2-(adamantan-1-yl)ethyl, 4-methylpentyl, etc.; R¹ = 4-methylphenyl, 4-methoxyphenyl, 4-bromophenyl, 4-(trifluoromethyl)phenyl) precursor to nitrogen-centered radicals and its application toward remote C-H fluorination and chlorination reactions of sulfonyl-protected alkyl amines R¹S(O)₂NHR² (R² = 4-fluorooctyl, 2-(2-fluorocyclobutyl)ethyl, 4-fluoro-4-methylpentyl, etc.) via 1,5-HAT were disclosed.

Organic Letters published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Application of 1-Bromooctane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wang, Haihua published the artcileConcurrent alkylation and crosslinking of polyaniline for enhanced anticorrosive performance of waterborne alkyd coating, Application In Synthesis of 143-15-7, the publication is Progress in Organic Coatings (2022), 106865, database is CAplus.

The uniform dispersion and long-term stability of hydrophobic polyaniline (PANI) in waterborne polymer matrix always remains a challenge. Here, PANI was chem. modified by 1,12-dibromododecane to prepare functionalized PANI (PANI-12Br(II)), and simultaneously achieve N-alkylation and chem. crosslinking of PANI chains. In addition, 1-bromododecane was utilized to modify PANI to prepare PANI-12Br(I) as a control. The degree of alkylation of PANI-12Br(II) was higher than that of PANI-12Br(I), as well as the content of N⁺ species in PANI-12Br(II). Also, the interaction between the PANI-12Br(II) chains decreased. The colloidal particle size decreased from 703.9 nm to 297.3 nm, and the dispersibility and long-term colloidal stability of PANI-12Br(II) in aqueous system were significantly improved. The water adsorption of as-prepared PANI-12Br(II)/WAR nanocomposite decreased from 18.37% to 4.27%, and the contact angle increased from 63.4° to 112.5°. Compared with WAR and PANI/WAR-0.5%, the coating resistance of PANI-12Br(II)/WAR-0.5% increased by 5 and 4 orders of magnitude, and the corrosion c.d. decreased by 3 and 2 orders of magnitude. The PANI-12Br(II)/WAR-0.5% displayed better long-term anticorrosive performance than PANI-12Br(I)/WAR-0.5%. The anticorrosive mechanisms were also put forward. The PANI-12Br(II) can be applied as a promising class of corrosion inhibitors in waterborne polymer matrixes.

Progress in Organic Coatings published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C3H5BN2O2, Application In Synthesis of 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Feng, Xing published the artcilePyrene-Based Y-shaped Solid-State Blue Emitters: Synthesis, Characterization, and Photoluminescence, HPLC of Formula: 111865-47-5, the publication is Chemistry – An Asian Journal (2012), 7(12), 2854-2863, S2854/1-S2854/29, database is CAplus and MEDLINE.

A series of pyrene-based Y-shaped blue emitters, namely, 7-tert-butyl-1,3-diarylpyrenes 4 were synthesized by the Suzuki cross-coupling reaction of 7-tert-butyl-1,3-dibromopyrene with a variety of p-substituted phenylboronic acids in good to excellent yields. These compounds were fully characterized by X-ray crystallog., UV/Vis absorption and fluorescence spectroscopy, DFT calculations, thermogravimetric anal., and differential scanning calorimetry. Single-crystal X-ray anal. revealed that the Y-shaped arylpyrenes exhibited a low degree of π stacking owing to the steric effect of the bulky tert-Bu group in the pyrene ring at the 7-position, and thus, the intermol. π-π interactions were effectively suppressed in the solid state. Despite the significantly twisted nonplanar structures, these mols. still displayed efficient intramol. charge-transfer emissions with clear solvatochromic shifts on increasing solvent polarity. An intriguing fact is that all of these mols. show highly blue emissions with excellent quantum yields in the solid state. Addnl., the two compounds containing the strongest electron-accepting groups, CN (4 d) and CHO (4 f), possess high thermal stability, which, together with their excellent solid-state fluorescence efficiency, makes them promising potential blue emitters in organic light-emitting device applications.

Chemistry – An Asian Journal published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, HPLC of Formula: 111865-47-5.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Liu, Ping published the artcileDesign of Potent and Orally Active GPR119 Agonists for the Treatment of Type II Diabetes, Product Details of C7H5Br2F, the publication is ACS Medicinal Chemistry Letters (2015), 6(8), 936-941, database is CAplus and MEDLINE.

The authors report herein the design and synthesis of a series of potent and selective GPR119 agonists. The objective was to develop a GPR119 agonist with properties that were suitable for fixed-dose combination with a DPP4 inhibitor. Starting from a phenoxy analog (1), medicinal chem. efforts directed toward reducing half-life and increasing solubility led to the synthesis of a series of benzyloxy analogs. Compound I was chosen for further profiling because of its favorable physicochem. properties and excellent GPR119 potency across species. This compound exhibited a clean off-target profile in counterscreens and good in vivo efficacy in mouse oGTT.

ACS Medicinal Chemistry Letters published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, Product Details of C7H5Br2F.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chia, Lawrence H. L. published the artcileMolecular polarizability. Conformations of polar substituted ethanes, SDS of cas: 594-81-0, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) (1973), 766-71, database is CAplus.

The mol. distributions of the rotational isomers and the dihedral angles between polar groups of CICH2CCl:CH2 and ten bromo- and chloro-substituted ethane derivatives were estimated from dipole moments and molar Kerr constants determined for CCl4 solutions at infinite dilution at 25°. Polarizations and refractions of these solutions were also determined

Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, SDS of cas: 594-81-0.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary