Month: November 2022

Parveen, Shagufta published the artcileSelective synthesis and comparative activity of olefinic isomers of 1,2-benzothiazine-1,1-dioxide carboxylates as aldose reductase inhibitors, Formula: C7H5Br2F, the publication is RSC Advances (2014), 4(40), 21134-21140, database is CAplus.

1,2-Benzothiazine-1,1-dioxides I (R¹ = 2,4,5-F₃, 4-Br-2-F; R² = CH₃) and II were selectively synthesized via the Wittig olefination reaction under various temperature conditions. At 40 °C, esters I with high Z-stereoselectivity (83-87%) were formed, while esters II formed preferentially with moderate to excellent regioselectivity at 100-120 °C (77-96%). The acid isomers I (R² = H) and II (R² = H), formed by acid hydrolysis of the corresponding esters, were found to inhibit aldose reductase in order of activity β,γ-unsaturated > Z-α,β-unsaturated > E-α,β-unsaturated isomers. The β,γ-unsaturated isomer II (R¹ = 4-Br-2F; R² = H) exhibited the most potent inhibition activity, with an IC₅₀ value of 0.057 μM. This was further supported by docking studies.

RSC Advances 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, Formula: C7H5Br2F.

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

Berton, Mateo published the artcileOn-demand synthesis of organozinc halides under continuous flow conditions, Application of Ethylbromofluoroacetate, the publication is Nature Protocols (2018), 13(1), 324-334, database is CAplus and MEDLINE.

Organozinc reagents are versatile building blocks for introducing C(sp₂)-C(sp₃) and C(sp₃)-C(sp₃) bonds into organic structures. However, despite their ample synthetic versatility and broad functional group tolerance, the use of organozinc reagents in the laboratory is limited because of their instability, exothermicity and water sensitivity, as well as their labor-intensive preparation Herein, we describe an on-demand synthesis of these useful reagents under continuous flow conditions, overcoming these primary limitations and supporting widespread adoption of these reagents in synthetic organic chem. To exemplify this procedure, a solution of Et zincbromoacetate is prepared by flowing Et bromoacetate through a column containing metallic zinc. The temperature of the column is controlled by a heating jacket and a thermocouple in close contact with it. Advice on how to perform the procedure using alternative equipment is also given to allow a wider access to the methodol. Here we describe the preparation of 50 mL of solution, which takes 1 h 40 min, although up to 250-300 mL can be prepared with the same column setup at a rate of 30 mL per h. The procedure provides the reagent as a clean solution with reproducible concentration Organozinc solutions generated in flow can be coupled to a second flow reactor to perform a Reformatsky reaction or can be collected over a flask containing the required reagents for a batch Negishi reaction.

Nature Protocols published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C4H6BrFO2, Application of Ethylbromofluoroacetate.

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

Gao, Yong-Chao published the artcileSulfite-Promoted C-H Fluoroalkyl Sulfuration of Imidazoheterocycles with Bromofluoroacetate and Elemental Sulfur, SDS of cas: 401-55-8, the publication is Synthesis (2020), 52(17), 2541-2550, database is CAplus.

A transition-metal-free sulfite-promoted three-component C-H sulfuration between imidazoheterocycles, elemental sulfur and bromofluoroacetate was developed. Sulfites, including Na₂S₂O₄, NaHSO₃ and Na₂S₂O₃, were able to promote the formation of two C-S bonds in one step using elemental sulfur as a green sulfurating agent, allowing the rapid introduction of the synthetically useful S-fluoroacetate group into imidazoheterocycles. These new imidazoheterocycle derivatives bearing an S-fluoroacetate group can be easily modified to produce pharmaceutically attractive compounds

Synthesis published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C4H6BrFO2, SDS of cas: 401-55-8.

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

Zhao, Xian published the artcileSynthesis of aryl triflones by insertion of arynes into C-SO₂CF₃ bonds, Application of 4-Bromo-1-(bromomethyl)-2-fluorobenzene, the publication is RSC Advances (2017), 7(1), 47-50, database is CAplus.

A new approach toward the synthesis of aryl triflones R-2-F₃CO₂SC₆H₃CH₂Ar (R = H, 4,5-Me₂, 4,5-F₂; Ar = 2-fluorophenyl, 3-trifluoromethylphenyl, 4-carboethoxyphenyl, etc.) was achieved by the formal insertion of arynes into C-SO₂CF₃ bonds. This reaction proceeds through addition of CF₃SO₂-containing nucleophiles to the in situ generated arynes and subsequent intramol. rearrangement.

RSC Advances 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 C18H20N2O12, Application of 4-Bromo-1-(bromomethyl)-2-fluorobenzene.

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

Gong, Jun published the artcileCircularly polarized luminescent 4,4′-bicarbazole scaffold for facile construction of chiroptical probes, Safety of 1-Bromooctane, the publication is Dyes and Pigments (2022), 109969, database is CAplus.

Small mols. with circularly polarized luminescence (CPL) are especially valuable in solution-based applications, like chiroptical probes for effective sensing. Such application was not well explored due in part to hard introduction of appropriate triggerable fluorophores. An easily post-modifiable CPL-active scaffold (4) is reported, and a feasible strategy to construct chiroptical probes for sensing hypochlorous acid is further proposed. Helically chiral 4 with a 4,4′-bicarbazole scaffold exhibits a large Stokes shift ≤142 nm and g_lum value of 0.9 × 10^-3. Through facile construction of phenothiazine moiety on 4, red-emitting compound 5 was obtained in high yield (85.3%), showing distinct optical and chiroptical responses towards hypochlorous acid with good liner relations and CPL sign blue-shifting of 120 nm in vitro. The probe is also applied to detect endogenous hypochlorous acid in living macrophages and can serve as a CPL sensor. Taking 5 as an application example, the authors envision that CPL-enabling scaffold 4 could find broad use in the design of more chiroptical probes.

Dyes and Pigments 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, Safety of 1-Bromooctane.

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

Percec, Virgil published the artcileSelf-organization of rectangular bipyramidal helical columns by supramolecular orientational memory epitaxially nucleated from a Frank-Kasper σ phase, Recommanded Product: 1-Bromododecane, the publication is Giant (2022), 100084, database is CAplus.

Programming living and soft complex matter via primary structure and self-organization represents the key methodol. employed to design functions in biol. and synthetic nanoscience. Memory effects have been used to create com. technologies including liquid crystal displays and biomedical applications based on shape memory polymers. Supramol. orientational memory (SOM), induced by an epitaxial nucleation mediated by the close contact spheres of cubic phases, emerged as a pathway to engineer complex nanoscale soft matter of helical columnar hexagonal arrays. SOM preserves the crystallog. directions of close contact supramol. spheres from the 3D phase upon cooling to the columnar hexagonal periodic array. Despite the diversity of 3D periodic and quasiperiodic nanoarrays of supramol. dendrimers, including Frank-Kasper and quasicrystal, all examples of SOM to date were mediated by Im3m (body-centered cubic, BCC) and Pm3n (Frank-Kasper A15) cubic phases. Expanding the scope of SOM to non-cubic arrays is expected to generate addnl. morphologies that were not yet available by any other methods. Here we demonstrate the SOM of a dendronized triphenylene that self-organizes into helical columnar hexagonal and tetragonal P4₂/mnm (Frank-Kasper σ) phases. Structural anal. of oriented fibers by X-ray diffraction reveals that helical columnar hexagonal domains self-organize an unusual rectangular bipyramidal morphol. upon cooling from the σ phase. The discovery of SOM in a non-cubic Frank-Kasper phase indicates that this methodol. may be expanded to other periodic and quasiperiodic nanoarrays organized from self-assembling dendrimers and, most probably, to other soft and living complex matter.

Giant 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 C12H25Br, Recommanded Product: 1-Bromododecane.

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

Yang, Xu-Heng published the artcileCopper-catalyzed alkynylation/annulation cascades of N-allyl ynamides: regioselective access to medium-sized N-heterocycles, Recommanded Product: 7-Bromohept-1-yne, the publication is Organic Chemistry Frontiers (2021), 8(1), 18-24, database is CAplus.

A synthetic strategy based on sequential application of aza-Claisen rearrangement, C-H functionalization, C-N coupling and cyclization as key steps has been developed for the synthesis of various medium-sized N-heterocycles of pharmaceutical relevance. This efficient new method exhibits a broad scope and provides a highly efficient synthesis of N-heterocycles I [R¹ = (4-methylbenzene)sulfonyl, naphthalene-2-sulfonyl, thiophene-2-sulfonyl, etc.; R² = H, Me; R³ = C₆H₅, 4-ClC₆H₄, thien-2-yl, etc.; R⁴ = H, Me; X = (CH₂)_n; n = 0, 1, 2, 3] of different ring sizes (6-, 7-, and 8-membered rings) in moderate to good yields.

Organic Chemistry Frontiers published new progress about 81216-14-0. 81216-14-0 belongs to bromides-buliding-blocks, auxiliary class Linker,PROTAC Linker, name is 7-Bromohept-1-yne, and the molecular formula is C7H15NO, Recommanded Product: 7-Bromohept-1-yne.

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

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

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