Tag: 100-200

Synthesis of (S)-2,6-dimethylphenylalanine via Ni(II) chelate induction was written by Zhang, Liang;Hou, Wenjie;Li, Ziyuan;Bai, Longxiang;Li, Tingyou. And the article was included in Xibei Yaoxue Zazhi in 2014.Name: 2-(Bromomethyl)-1,3-dimethylbenzene This article mentions the following:

The paper is to synthesize the unnatural amino acid (S)-2,6-dimethylphenylalanine. 2,6-Dimethylbenzoic acid was reduced to produce 2,6-dimethylbenzyl alc., then the 2,6-dimethylbenzyl alc. was brominated to generate 2,6-dimethylbenzyl bromide. The 2,6-dimethylbenzyl bromide was then coupled with (S)-BPB-Ni-Gly complex to give (S)-Dmp-BPB-Ni complex, which was then decomposed by acid to obtain (S)-2,6-dimethylphenylalanine. (S)-2,6-Dimethylphenylalanine was synthesized with a total yield of 33.6%. This method has characteristics of cheap starting materials and simple exptl. procedure. In the experiment, the researchers used many compounds, for example, 2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7Name: 2-(Bromomethyl)-1,3-dimethylbenzene).

2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7) 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). 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.Name: 2-(Bromomethyl)-1,3-dimethylbenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis of monosubstituted [1.1.1]propellanes was written by Bothe, Harald;Schlueter, Arnulf Dieter. And the article was included in Chemische Berichte in 1991.Electric Literature of C7H15BrO This article mentions the following:

Wittig reaction of (ClCH₂)₂CO with RCH:PPh₃ [R = Me(CH₂)_n, MeO(CH₂)_m; n = 4, 6, 10; m = 3, 5] in Et₂O-hexane gave 32-48% RCH:C(CH₂Cl)₂, which underwent cycloaddition with :CBr₂ to give 20-57% bis(chloromethyl)dibromocyclopropanes I. Treating I with MeLi in Et₂O gave 21-64% title propellanes II, which polymerized spontaneously at room temperature in the absence of inhibitors. In the experiment, the researchers used many compounds, for example, 1-Bromo-6-methoxyhexane (cas: 50592-87-5Electric Literature of C7H15BrO).

1-Bromo-6-methoxyhexane (cas: 50592-87-5) 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. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Electric Literature of C7H15BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Enhancing anion conduction stability of quaternized poly(phenylene) oxide-based anion exchange membranes with ionic liquids modified carbon nanomaterials was written by Wang, Ning;Zuo, Tingting;Liu, Ke;Jia, Jing;Song, Di;Wei, Xiaoqing;Hu, Shu;Che, Quantong. And the article was included in International Journal of Energy Research in 2022.Recommanded Product: 128-08-5 This article mentions the following:

The anion exchange membrane (AEM) with high and stable conductivity is important to the com. application of anion exchange membrane fuel cell. The AEM based on the polymer of quaternized poly(phenylene) oxide (QPPO) with enhanced anion conduction stability has been constructed through the introduction of the ionic liquid (IL) of 1-aminopropyl-3-methylimidazolium bromide (APMIMBr)-modified carbon nanomaterials, such as carbon nanotubes oxide (OCNT) and graphene oxide (GO) nanosheets. The IL-OCNT and IL-GO composites prevented hydroxyl groups from attacking the polymer of QPPO. Thus, QPPO/x(IL-OCNT) and QPPO/x(IL-GO) series membranes possessed enhanced hydroxide conductivity stability in alk. solution Specifically, QPPO/5%(IL-OCNT) and QPPO/5%(IL-GO) membranes exhibited the hydroxide conductivities of 23.0 and 28.5 mS/cm at 80°C. Notably, the hydroxide conductivities could reach 16.3 and 30.2 mS/cm while the prepared membranes were immersed in 2 M KOH solution for 1848 h. Furthermore, the stable hydroxide conductivity was derived from the fine dimension stability and mech. property. The tensile stress values were, resp., 19.4 and 19.8 MPa even if the membranes were immersed in alk. solution In the prepared QPPO/x(IL-OCNT) and QPPO/x(IL-GO) membranes, In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Recommanded Product: 128-08-5).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) 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. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Recommanded Product: 128-08-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Introduction of new configuration of dyes contain indigo group for dye-sensitized solar cells: DFT and photovoltaic study was written by Hosseinnezhad, Mozhgan;Nasiri, Sohrab;Fathi, Mohsen;Ghahari, Mehdi;Gharanjig, Kamaladin. And the article was included in Optical Materials (Amsterdam, Netherlands) in 2022.Related Products of 128-08-5 This article mentions the following:

The chem. structure engineering of photosensitizers has a major role in photovoltaic devices such as dye-sensitized solar cells. Thus, a novel dye system was designed and prepared with contained indigo group for increasing light resistance as well as cyanoacrylic acid for improving the interaction. All intermediates and dyes were purified and analyzed using FTIR, HNMR, CHN and UV-Visible. The results showed that all the expected dye chem. structures have been achieved. Two semiconductors namely titanium dioxide and Na-doped titanium dioxide, were coated with the synthesized dye to prepare photoanode. All prepared samples illustrated blue shift in UV-Visible due to H-aggregation of dyes on the semiconductor. The energy level of dyes was investigated by Cyclic Voltammetry technique and DFT calculation The results confirmed the possibility of using dyes in the structure of dye-sensitized solar cells. All prepared dyes were utilized as photosensitizers in dye-sensitized solar cells. The efficiency of Dye 6 in dye-sensitized solar cells based on titanium dioxide and its Na-doped derivative was 7.17% and 7.56%, resp. Optical devices based on Na-doped semiconductor showed superior performance to those based on pristine titanium dioxide. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Related Products of 128-08-5).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) 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.Related Products of 128-08-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Aryne-mediated fluorination: Synthesis of fluorinated biaryls via a sequential desilylation-halide elimination-fluoride addition process was written by Diemer, Vincent;Garcia, Juan Sanz;Leroux, Frederic R.;Colobert, Francoise. And the article was included in Journal of Fluorine Chemistry in 2012.HPLC of Formula: 452-62-0 This article mentions the following:

An unusual aryne-mediated fluorination of aromatic ring systems during the desilylation of ortho-bromo-biphenyl-trimethylsilanes with tetrabutylammonium fluoride (TBAF) is described. In situ formation of an aryne and addition of fluoride affords fluorinated biphenyls. The structures have been confirmed by synthesis of authentic samples via Suzuki-Miyaura cross-coupling and X-ray anal. In situ trapping experiments with furan proved the transient formation of aryne by fluoride-induced displacement of the TMS group and subsequent bromide elimination. In the experiment, the researchers used many compounds, for example, 3-Bromo-4-fluorotoluene (cas: 452-62-0HPLC of Formula: 452-62-0).

3-Bromo-4-fluorotoluene (cas: 452-62-0) 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. 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: 452-62-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rh^II-Catalyzed Intermolecular C-H Arylation of Aromatics with Diazo Quinones was written by Wu, Kai;Cao, Bei;Zhou, Cong-Ying;Che, Chi-Ming. And the article was included in Chemistry – A European Journal in 2018.Computed Properties of C6H6BrNO This article mentions the following:

An efficient synthesis of biaryls R-R¹ [R = 4-H₃COC₆H₄, thiophen-2-yl, 2-methoxynaphthalen-1-yl, 1,3-benzothiazol-2-yl, etc.; R¹ = 2-OH-3,5-Cl₂C₆H₂, 2-Br-4-HOC₆H₃, 3-C(O)OCH₃-4-HOC₆H₃, etc.] by a dirhodium(II)-catalyzed aromatic C-H arylation with diazo quinones such as 4-bromo-6-diazocyclohexa-2,4-dien-1-one, 2,6-dichloro-4-diazocyclohexa-2,5-dien-1-one, 3-bromo-4-diazocyclohexa-2,5-dien-1-one, etc. has been developed. The new biaryl synthesis can be performed under mild and neutral conditions and without directing group chelation assistance. The reaction tolerates various functionalities and is applicable to a broad range of aromatics The regioselectivity of the C-H arylation was often high and predictable. The synthetic utility of the method was demonstrated by the late-stage modifications of a series of pharmaceuticals and functional materials as well as a short synthesis of a transthyretin amyloid inhibitor e.g., Me 2-hydroxy-5-(2-methoxy-6-(3-oxobutyl)naphthalen-1-yl)benzoate. In the experiment, the researchers used many compounds, for example, 4-Amino-3-bromophenol (cas: 74440-80-5Computed Properties of C6H6BrNO).

4-Amino-3-bromophenol (cas: 74440-80-5) 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. 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.Computed Properties of C6H6BrNO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Asymmetric Iodonio-[3,3]-Sigmatropic Rearrangement to Access Chiral α-Aryl Carbonyl Compounds was written by Tian, Junsong;Luo, Fan;Zhang, Qifeng;Liang, Yuchen;Li, Dongyang;Zhan, Yaling;Kong, Lichun;Wang, Zhi-Xiang;Peng, Bo. And the article was included in Journal of the American Chemical Society in 2020.Related Products of 50592-87-5 This article mentions the following:

Here we describe an asym. [3,3]-sigmatropic rearrangement of aryl iodanes that enables the enantioselective α-arylation of chiral 2-oxazolines, thereby producing valuable chiral α-aryl carbonyl compounds The success of this protocol hinges on the selective assembly of aryl iodanes with 2-oxazolines and the smooth deprotonation of the in situ-generated iodonium-imine species. The nearly neutral and mild conditions of the reaction allow it to tolerate a wide variety of functional groups. Moreover, the remaining iodine atom in the products not only provides a versatile platform for further elaboration of such mols. but also supplies the asym. hypervalent iodine chem. with a new class of chiral scaffolds. Thus, e.g., for achiral case, reaction of PhI(OAc)₂ with 2-pentyl-2-oxazoline in presence of 2-methylpyridine as base and TMSOTf afforded I (62%). In the experiment, the researchers used many compounds, for example, 1-Bromo-6-methoxyhexane (cas: 50592-87-5Related Products of 50592-87-5).

1-Bromo-6-methoxyhexane (cas: 50592-87-5) 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. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Related Products of 50592-87-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Effects of different anchoring groups in phenothiazinyl-benzothiadiazolyl dyes for dye-sensitized solar cells was written by Li, Jianhua;Ding, Yongjie;Liu, Shuaishuai;Ding, Wei;Fang, Dong;Chen, Hu;Jiao, Yunfei;Mi, Baoxiu;Xu, Wenjuan;Gao, Zhiqiang. And the article was included in Synthetic Metals in 2022.Name: 1-Bromopyrrolidine-2,5-dione This article mentions the following:

In this work, we synthesize two new dyes with phenothiazine (PTZ) as π-bridge, benzothiadiazole (BTD) as acceptor moiety, and rhodanine-3-acetic acid (-RA) / cyanoacrylic acid (-CA) as anchoring group. In combination with a previously reported one with anchoring group of carboxylic acid (-CH), the effects of the three anchoring groups on material properties and the performance of dye-sensitized solar cells (DSSCs) are investigated. It is found that in terms of anchoring group for DSSC dye, the moiety features of electron-pulling ability, the spatial stretching, as well as its conjugation to the main mol. axis should be considered simultaneously. When attached over a para-Ph group to a phenothiazinyl-benzothiadiazolyl dye, among the three commonly used anchoring groups of -RA, -CA and -CH, the last one is the best, with which the CBPTZ-BTD1 based DSSC exhibits the highest power conversion efficiency of 6.69%, mainly due to the highest dye loading, open-circuit voltage, and rather high fill factor. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Name: 1-Bromopyrrolidine-2,5-dione).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) 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. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Name: 1-Bromopyrrolidine-2,5-dione

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Iron-Catalyzed Asymmetric Decarboxylative Azidation was written by Wang, Kaikai;Li, Yajun;Li, Xiaoyan;Li, Daliang;Bao, Hongli. And the article was included in Organic Letters in 2021.Reference of 83902-02-7 This article mentions the following:

The first iron-catalyzed asym. azidation of benzylic peresters has been reported with trimethylsilyl azide (TMSN₃) as the azido source. Hydrocarbon radicals that lack of strong interactions were capable to be enantioselectively azidated. The reaction features good functional group tolerance, high yields, and mild conditions. The chiral benzylic azides can further be used in click reaction, phosphoramidation, and reductive amination, which demonstrate the synthetic values of this reaction. In the experiment, the researchers used many compounds, for example, 2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7Reference of 83902-02-7).

2-(Bromomethyl)-1,3-dimethylbenzene (cas: 83902-02-7) 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. 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.Reference of 83902-02-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nitrogen-Containing Perylene Diimides: Molecular Design, Robust Aggregated Structures, and Advances in n-Type Organic Semiconductors was written by Kumagai, Shohei;Ishii, Hiroyuki;Watanabe, Go;Yu, Craig P.;Watanabe, Shun;Takeya, Jun;Okamoto, Toshihiro. And the article was included in Accounts of Chemical Research in 2022.Category: bromides-buliding-blocks This article mentions the following:

Conspectus: Organic semiconductors (OSCs) have attracted much attention because of their potential applications for flexible and printed electronic devices and thus have been extensively investigated in a variety of research fields, such as organic chem., solid-state physics, and device physics and engineering. Organic thin-film transistors (OTFTs), a class of OSC-based devices, have been expected to be an alternative of silicon-based metal oxide semiconductor field-effect transistors (MOSFETs), which is the indispensable element for most of the current electronic devices. However, the noncovalently aggregated, van der Waals solid nature of the OSCs, by contrast to covalently bound silicon, conventionally exhibits lower carrier mobilities, limiting the practical applications of OTFTs. In particular, electron-transporting (i.e., n-type) OSCs lag behind their hole-transporting (p-type) counterparts in carrier mobility and ambient stability as OTFTs. This is primarily because of the difficulty in achieving compatibility between the aggregated structure exhibiting excellent carrier mobility and that with enough electron affinity. Recent understandings of carrier transport in OSCs explain that large and two-dimensionally isotropic transfer integrals coupled with small fluctuations are crucial for high carrier mobilities. In addition, from a practical point of view, the compatibility with practical device processes is highly required. Rational mol. design principles, therefore, are still demanded for developing OSCs and OTFTs toward high-end device applications. Herein, we will show our recent progress in the development of n-type OSCs with the key π-electron core (π-core) of benzo[de]isoquinolino[1,8-gh]quinolinetetracarboxylic diimide (BQQDI) on the basis of single-crystal OTFT technologies and the band-transport model enabled by two-dimensional mol. packing arrangements. The critical point is the introduction of electroneg. nitrogen atoms into the π-core: the nitrogen atoms in BQQDI not only deepen the MO energies but also allow hydrogen-bonding-like attractive intermol. interactions to control the aggregated structures, unlike the conventional role of the nitrogen introduced into OSCs only for the former role. Hence, the BQQDI analogs exhibit air-stable OTFT behavior and two-dimensional brickwork packing structures. Specifically, phenethyl-substituted analog (PhC₂-BQQDI) has been shown as the first principal BQQDI-based material, demonstrating solution-processable thin-film single crystals, fewer anisotropic transfer integrals, and an effective suppression of mol. motions, leading to band-like electron-transport properties and stress-durable n-channel OTFT performances, in conjunction with the support of computational calculations Insights into more fundamental points of view have been found by side-chain derivatization and OTFT studies on polycrystalline and single-crystal films. We hope that this Account provides readers with new strategies for designing high-performance OSCs by two-dimensional control of the aggregated structures. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Category: bromides-buliding-blocks).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. 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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary