Category: bromides-buliding-blocks

An, Xiang published the artcileUniversal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications, Synthetic Route of 111-83-1, the publication is Chinese Chemical Letters (2022), 33(12), 5137-5141, database is CAplus.

Herein, a universal 4-qualifiable fluorene-based building block I, which is a fundamental mol. segment to functionalize and obtain novel conjugated materials, was demonstrated. Compared to the traditional modification at 9-site, addnl. 4-position functionalization provided an exciting blueprint to not only tune electronic structure and excited state via p-n mol. design engineering and space charge-transfer strategy, but also allow for optimizing intermol. arrangement and obtaining solution-processing ability. The introduction of the 4-site substituent in fluorene based semiconductors may endow materials with unique properties. Finally, two stable deep-blue light-emitting conjugated polymers, PODOPF and PODOF, by utilizing the 4-substituent fluorene based building block were successfully prepared It is believable that the performance, stability and processibility of reported outstanding fluorene-based conjugated mols. can be further optimized based on this universal building block.

Chinese Chemical 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, Synthetic Route of 111-83-1.

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

He, Chun-Yang published the artcileSelective thienylation of fluorinated benzothiadiazoles and benzotriazoles for organic photovoltaics, Application In Synthesis of 303734-52-3, the publication is Chemical Science (2014), 5(4), 1317-1321, database is CAplus.

An unprecedented example for the selective and efficient synthesis of an FBT-thiophene structural motif via dual C-H functionalization, catalyzed by palladium, has been developed. Fluorinated benzotriazole is also applicable to the reaction. This protocol provides facile access to unsym. and sym. thienylated FBTs that can be applied in the development of high performance photovoltaics, in particular in bulk heterojunction (BHJ) solar cells.

Chemical Science published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Application In Synthesis of 303734-52-3.

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

Liu, Fan published the artcileHole Transport Materials Based on 6,12-Dihydroindeno[1,2-b]fluorine with Different Periphery Groups: A New Strategy for Dopant-Free Perovskite Solar Cells, Quality Control of 111865-47-5, the publication is Advanced Functional Materials (2019), 29(24), n/a, database is CAplus.

Although several hole-transporting materials (HTMs) have been designed to obtain perovskite solar cells (PSCs) devices with high performance, the dopant-free HTMs for efficient and stable PSCs remain rare. Herein, a rigid planar 6,12-dihydroindeno[1,2-b]fluorine (IDF) core with different numbers of bulky periphery groups to construct dopant-free HTMs of IDF-SFXPh, IDF-DiDPA, and IDF-TeDPA is modified. Thanks to the contributions of the planar IDF core and the twisted SFX periphery groups, the dopant-free IDF-SFXPh-based PSCs device achieves a device performance of 17.6%, comparable to the doped 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD)-based device (17.6%), with much enhanced device stability under glovebox and ambient conditions.

Advanced Functional Materials 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, Quality Control of 111865-47-5.

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

Xie, Ke published the artcilePoly(3,4-dinitrothiophene)/SWCNT composite as a low overpotential hydrogen evolution metal-free catalyst, Quality Control of 52431-30-8, the publication is Journal of Materials Chemistry A: Materials for Energy and Sustainability (2015), 3(1), 78-82, database is CAplus.

A novel metal-free H evolution reaction catalyst made of poly(3,4-dinitrothiophene)/SWCNT was developed. This catalyst presents a good H evolution reaction activity with a lower overpotential than metallic catalysts. Its performance was optimized to an overpotential of ∼0.040 V and a H generation rate of 44.2 μmol h^-1 cm^-2.

Journal of Materials Chemistry A: Materials for Energy and Sustainability 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 C9H9NO, Quality Control of 52431-30-8.

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

Jin, Weiwei published the artcileVisible-light induced three-component alkynyl-difluoroalkylation of unactivated alkenes, Application In Synthesis of 401-55-8, the publication is Chemical Communications (Cambridge, United Kingdom) (2018), 54(57), 7924-7927, database is CAplus and MEDLINE.

A visible-light induced three-component reaction of difluoroalkyl halides, unactivated alkenes, and alkynyl sulfones is described, providing a direct and general approach to the construction of synthetically valuable β-difluoroalkylated alkynes under room temperature conditions. This represents the first intermol. alkynyl-difluoroalkylation of unactivated alkenes.

Chemical Communications (Cambridge, United Kingdom) 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 In Synthesis of 401-55-8.

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

Huang, Pengmian published the artcileDesign, synthesis and insecticidal activities of new meta-diamide compounds containing n-butyl group, Application of 2-Bromo-4-(perfluoropropan-2-yl)-6-(trifluoromethyl)aniline, the publication is Tetrahedron Letters (2022), 153743, database is CAplus.

In order to discover a novel insecticide, a series of meta-diamide compounds containing Bu group were designed and synthesized. Preliminary bioassay data showed that some of the target compounds exhibited good insecticidal activities against Plutella xylostella, Spodoptera frugiperda and Alfalfa sprouts. In particular, compounds 6d and 6n displayed 100% insecticidal activity against Plutella xylostella at 1 mg/L and also revealed 100% of mortality rate against Spodoptera frugiperda at 0.1 mg/L, which was consistent with the cyproflanilide. Meanwhile, compound 6m showed 98.89% insecticidal activity against Alfalfa sprouts at 100 mg/L, better than cyproflanilide (25.60% at 100 mg/L). The work demonstrated that compounds containing Bu group might supply certain hints toward structure optimization design for the development of new insecticides.

Tetrahedron Letters published new progress about 1207314-86-0. 1207314-86-0 belongs to bromides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Bromide,Amine,Benzene, name is 2-Bromo-4-(perfluoropropan-2-yl)-6-(trifluoromethyl)aniline, and the molecular formula is C10H4BrF10N, Application of 2-Bromo-4-(perfluoropropan-2-yl)-6-(trifluoromethyl)aniline.

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

Han, Shuaijun published the artcileCopper-catalyzed remote C-H monofluoromethylation of 8-aminoquinolines with dimethyl phosphonate as reductant, Related Products of bromides-buliding-blocks, the publication is Tetrahedron Letters (2019), 60(40), 151077, database is CAplus.

A simple and efficient copper-catalyzed monofluoromethylation of 8-aminoquinolines with 2-bromo-2-fluoroacetate was described with HPO(OMe)₂ (di-Me phosphonate) as reductant. The reaction tolerated a variety of quinoline amides and monofluoroalkyl bromides. Significant advantages of this protocol include synthetic convenience and high reaction efficiency.

Tetrahedron Letters 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, Related Products of bromides-buliding-blocks.

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

Tang, Nana published the artcilePractical, metal-free remote heteroarylation of amides via unactivated C(sp³)-H bond functionalization, Application of (2-Bromoethyl)cyclopentane, the publication is Chemical Science (2019), 10(28), 6915-6919, database is CAplus and MEDLINE.

A new, efficient, site-selective heteroarylation of amides via C(sp³)-H bond functionalization. Amidyl radicals were directly generated from the amide N-H bonds under mild conditions, which triggered the subsequent 1,5-HAT process. A wide scope of aliphatic amides including carboxamides, sulfonamides and phosphoramides were readily modified at remote C(sp³)-H bonds by installing diverse heteroaryl groups. Borne out of pragmatic consideration, this protocol was used for the late-stage functionalization of amides.

Chemical Science published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C3H9ClOS, Application of (2-Bromoethyl)cyclopentane.

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

Wu, Shuo published the artcileRegioselective Vinylation of Remote Unactivated C(sp³)-H Bonds: Access to Complex Fluoroalkylated Alkenes, Product Details of C4H6BrFO2, the publication is Angewandte Chemie, International Edition (2019), 58(5), 1499-1503, database is CAplus and MEDLINE.

Regioselective incorporation of a particular functional group into aliphatic sites by direct activation of unreactive C-H bonds is of great synthetic value. Despite advances in radical-mediated functionalization of C(sp³)-H bonds by a hydrogen-atom transfer process, the site-selective vinylation of remote C(sp³)-H bonds still remains underexplored. Reported herein is a new protocol for the regioselective vinylation of unactivated C(sp³)-H bonds. The remote C(sp³)-H activation is promoted by a C-centered radical instead of the commonly used N and O radicals. The reaction possesses high product diversity and synthetic efficiency, furnishing a plethora of synthetically valuable E alkenes bearing tri-/di-/mono-fluoromethyl and perfluoroalkyl groups.

Angewandte Chemie, International Edition 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 C8H16O2, Product Details of C4H6BrFO2.

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

Li, Zhitao published the artcileAnalysis of coal tar pitch and smoke extract components and their cytotoxicity on human bronchial epithelial cells, Formula: C4Br2N2O4S, the publication is Journal of Hazardous Materials (2011), 186(2-3), 1277-1282, database is CAplus and MEDLINE.

Coal tar pitch and its smoke are considered hazardous byproducts and common pollutants generated by the coal processing industry. This work characterized coal tar pitch and its smoke extracts by gas chromatog./mass spectrometry (GC/MS) using dimethylsulfoxide. Only 0.3025% of components in total coal tar pitch were identified by GC/MS. Among 18 identified compounds, polycyclic aromatic hydrocarbons (PAH) has the highest relative abundance (0.19%). Remaining components were composed of monocyclic aromatic hydrocarbons, heterocyclic compounds, and alkenes. Among 38 coal tar pitch smoke extract constituents profiled, 87.91% were PAH; the remaining 12.09% were composed of monocyclic aromatic hydrocarbons, heterocyclic compounds, and alkenes. The cytotoxic effect of coal tar pitch and its smoke extracts on BEAS-2B cells were also evaluated using the MTT assay. BEAS-2B cells exposed to coal tar pitch exhibited a non dose-dependent, U-shaped cytotoxicity with the maximum ID of 3.75 mg/L. BEAS-2B cells exposed to coal tar pitch smoke extracts exhibited dose-dependent cytotoxicity with a 8.64 mg/L LC₅₀. Results demonstrated the significant different composition and cytotoxicity of coal tar pitch and its extracts, suggesting 2 underlying mechanisms which are pending future investigation.

Journal of Hazardous Materials 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, Formula: C4Br2N2O4S.

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