Tag: 100-200

《Imidazole-induced self-assembly of polyoxovanadate cluster organic framework for efficient Knoevenagel condensation under mild conditions》 was written by Dou, Ming-Yu; Zhong, Dan-Dan; Huang, Xian-Qiang; Yang, Guo-Yu. Computed Properties of C7H5BrO And the article was included in CrystEngComm in 2020. The article conveys some information:

Three polyoxovanadate (POV)-based clusters, [Ni(1-bIm)4]2(V4O12)·H2O, [Ni(1-eIm)(H2O)4]2(V10O28)(1-eImH)2·2H2O and [Ni(H2O)5]2(V10O28)(1-pImH)2·4H2O (1-bIm = 1-butylimidazole; 1-eIm = 1-ethylimidazole and 1-pIm = 1-propylimidazole) was synthesized. The (POV)-based cluster [Ni(1-bIm)4]2(V4O12)·H2O was controllably achieved by an imidazole-induced self-assembly strategy and exhibited a 2D POVCOF in which circular [V4O12]4- clusters were bridged by four six-coordinated Ni(II) atoms (NiN4O2 model). The (POV)-based clusters [Ni(1-eIm)(H2O)4]2(V10O28)(1-eImH)2·2H2O and [Ni(H2O)5]2(V10O28)(1-pImH)2·4H2O were obtained at lower pH values. Notably, among the three POV-based clusters, POVCOF [Ni(1-bIm)4]2(V4O12)·H2O displayed highly efficient heterogeneous solvent-free catalytic activity (yields of up to 99%) and excellent recyclability in Knoevenagel condensation at room temperature In addition to this study using o-Bromobenzaldehyde, there are many other studies that have used o-Bromobenzaldehyde(cas: 6630-33-7Computed Properties of C7H5BrO) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Computed Properties of C7H5BrOSynthetic applications of o-Bromobenzaldehyde include: synthesis of aza-fused polycyclic quinolines through copper-catalyzed cascade reaction, preparation of 1-substituted indazoles by CuI-catalyzed coupling with N-aryl hydrazides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,RSC Advances included an article by Tan, Xiaoyan; Zhou, Yanlin; Shen, Li; Jia, Han; Tan, Xiaorong. Application of 2969-81-5. The article was titled 《A mitochondria-targeted delivery system of doxorubicin and evodiamine for the treatment of metastatic breast cancer》. The information in the text is summarized as follows:

For mitochondria-targeted nano-drug delivery systems against cancer, effectively targeting and releasing the drug into mitochondria are the keys to improve the therapeutic effect. In this study, mitochondria-targeted and reduction-sensitive micelles were developed to co-deliver doxorubicin (DOX) and evodiamine (EVO) for the treatment of metastatic breast cancer. After entering cancer cells, the micelles first targeted mitochondria through triphenylphosphonium cations. Then, the disulfide bonds of the micelles were cleaved by GSH, and both DOX and EVO were released near the mitochondria. The released EVO subsequently destroyed the mitochondrial membrane, resulting in a large amount of DOX entering the mitochondria and improving the anti-tumor effect of DOX. These mitochondria-targeted and reduction-sensitive micelles loaded with doxorubicin and evodiamine showed significant inhibition of the tumor cell growth both in vitro and in vivo. In the experiment, the researchers used Ethyl 4-bromobutyrate(cas: 2969-81-5Application of 2969-81-5)

Ethyl 4-bromobutyrate(cas: 2969-81-5) belongs to bromides. 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.Application of 2969-81-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Organic Letters included an article by Sun, Song; Zhou, Cong; Yu, Jin-Tao; Cheng, Jiang. Application In Synthesis of (Bromomethyl)cyclopropane. The article was titled 《Visible-Light-Driven Palladium-Catalyzed Oxy-Alkylation of 2-(1-Arylvinyl)anilines by Unactivated Alkyl Bromides and CO2: Multicomponent Reactions toward 1,4-Dihydro-2H-3,1-benzoxazin-2-ones》. The information in the text is summarized as follows:

A visible-light-driven palladium-catalyzed radical oxy-alkylation of 2-(1-arylvinyl)anilines with unactivated alkyl bromides and CO2 was developed toward 1,4-dihydro-2H-3,1-benzoxazin-2-ones. This multicomponent reaction (MCR) starts with (1) carboxylation of an amino by CO2; (2) formation of Pd(I) and an alkyl radical via visible-light-driven reaction of alkyl bromides and Pd(0); (3) addition of an alkyl radical to the vinyl followed by single electron transfer (SET) oxidation to the carbocation by Pd(I); and (4) cyclization via intramol. nucleophilic attack of the carboxylate anion to carbocation. The experimental part of the paper was very detailed, including the reaction process of (Bromomethyl)cyclopropane(cas: 7051-34-5Application In Synthesis of (Bromomethyl)cyclopropane)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.Application In Synthesis of (Bromomethyl)cyclopropane

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Chemical Science included an article by Mao, Zhu; Yang, Zhan; Xu, Chao; Xie, Zongliang; Jiang, Long; Gu, Feng Long; Zhao, Juan; Zhang, Yi; Aldred, Matthew P.; Chi, Zhenguo. Quality Control of o-Bromobenzaldehyde. The article was titled 《Two-photon-excited ultralong organic room temperature phosphorescence by dual-channel triplet harvesting》. The information in the text is summarized as follows:

Due to inefficient mol. design strategies, two-photon-excited ultralong organic room temperature phosphorescence (TPUOP) has not yet been reported in single-component materials. Herein, we present an innovative design method by dual-channel triplet harvesting to obtain the first bright TPUOP mol. with a lifetime of 0.84 s and a quantum efficiency of 16.6%. In compound o-Cz the donor and acceptor units are connected at the ortho position of benzophenone, showing intramol. space charge transfer. Therefore, the two-photon absorption ability is improved due to the enhanced charge transfer character. Moreover, the small energy gap boosts dual-channel triplet harvesting via ultralong thermally activated delayed fluorescence and H-aggregation phosphorescence, which suppresses the long-lived triplet concentration quenching. Through two-photon absorption, a near-IR laser (808 nm) is able to trigger the obvious ultralong emission under ambient conditions. This research work provides valuable guidance for designing near-IR-excited ultralong organic room temperature phosphorescence materials. The experimental part of the paper was very detailed, including the reaction process of o-Bromobenzaldehyde(cas: 6630-33-7Quality Control of o-Bromobenzaldehyde)

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Quality Control of o-BromobenzaldehydeSynthetic applications of o-Bromobenzaldehyde include: synthesis of aza-fused polycyclic quinolines through copper-catalyzed cascade reaction, preparation of 1-substituted indazoles by CuI-catalyzed coupling with N-aryl hydrazides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,RSC Advances included an article by Zhao, Yi-Shu; Ruan, Hong-Li; Wang, Xiu-Yang; Chen, Chen; Song, Pei-Fang; Lu, Cheng-Wei; Zou, Li-Wei. Name: o-Bromobenzaldehyde. The article was titled 《Catalyst-free visible-light-induced condensation to synthesize bis(indolyl)methanes and biological activity evaluation of them as potent human carboxylesterase 2 inhibitors》. The information in the text is summarized as follows:

A mild strategy for visible-light-induced synthesis of bis(indolyl)methanes was developed using aromatic aldehydes and indole as substrates. This reaction was performed at room temperature under catalyst- and additive-free conditions to synthesize a series of bis(indolyl)methanes in good to excellent yields. In addition, all synthesized bis(indolyl)methanes together with β-substituted indole derivatives synthesized according to our previous work, were evaluated for their inhibitory effect against human carboxylesterase (CES1 and CES2). Primary structure-activity relationship anal. of all tested compounds showed that the modifications of β-substituted indole at the β-site with another indolyl group led to a significant enhancement of the inhibitory effect on CES2 and the bisindolyl structure was essential for CES2 inhibition. These results demonstrated that these bis(indolyl)methanes were potent and selective CES2 inhibitors, which might be helpful for medicinal chemists to design and develop more potent and selective CES2 inhibitors for biomedical applications.o-Bromobenzaldehyde(cas: 6630-33-7Name: o-Bromobenzaldehyde) was used in this study.

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Name: o-BromobenzaldehydeIt is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lv, Xu-Lu; Wang, Cong; Wang, Qiao-Li; Shu, Wei published an article in Organic Letters. The title of the article was 《Rapid Synthesis of γ-Arylated Carbonyls Enabled by the Merge of Copper- and Photocatalytic Radical Relay Alkylarylation of Alkenes》.Synthetic Route of C4H6BrFO2 The author mentioned the following in the article:

The development of mild and practical methods for the γ-arylation of carbonyl compounds is an ongoing challenge in organic synthesis. The first formal γ-arylation of carbonyl compounds via radical relay cross-coupling of α-bromocarbonyl precursors with boronic acids in the presence of alkenes is reported. This directing-group-free protocol allows for the rapid and straightforward access to a wide range of γ-arylated esters, ketones, and amides under ambient conditions with excellent functional group tolerance. The experimental part of the paper was very detailed, including the reaction process of Ethylbromofluoroacetate(cas: 401-55-8Synthetic Route of C4H6BrFO2)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Synthetic Route of C4H6BrFO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of C6H5BrO2On March 27, 2019, McRae, Callum; Kapoor, Anshul; Kanda, Pushpinder; Hibbert, Benjamin; Davis, Darryl R published an article in Heart rhythm. The article was 《Systematic review of biological therapies for atrial fibrillation.》. The article mentions the following:

Biological therapies that increase or suppress the expression of transcripts underlying atrial fibrillation (AF) progression are increasingly being explored to create novel treatment paradigms beyond simply suppressing or destroying tissue. To date, there has been no systematic overview of the preclinical evidence exploring manipulation of fundamental biological principles in the treatment of AF. As such, the objective of this study was to establish the effect of biological approaches used in the treatment of AF within large and small animals. We performed a systematic search using predefined terms, which yielded 25 studies. We determined the effect of biological approaches on primary efficacy outcomes and assessed the quality of included studies or possible bias in the treatment of AF. Compared with non-transduced or transduced controls, biological therapies reduced AF inducibility (85% less AF; odds ratio 0.15; 95% confidence interval [CI] 0.07-0.35; P < .01) and atrial scar burden (6.7% smaller scars; 95% CI 4.2-9.2; P < .01) or increased number of days in sinus rhythm (6.4 more days in sinus rhythm; 95% CI 5.83-6.97; P < .01). Similar effects were seen in both large and small animals, while a minor tendency to higher risk of bias was observed in small animal studies. In conclusion, treatment with any biological therapy significantly improved AF in preclinical animal models compared with controls. Although biological therapies target markedly different fundamental mechanisms, we observed a consistent difference in their effect on AF outcomes. The results came from multiple reactions, including the reaction of 2-Bromobenzene-1,4-diol(cas: 583-69-7Computed Properties of C6H5BrO2)

2-Bromobenzene-1,4-diol(cas: 583-69-7) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Computed Properties of C6H5BrO2 Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

COA of Formula: C4H6BrFO2On June 7, 2019, Wan, Yimei; Shang, Tianbo; Lu, Zenghui; Zhu, Gangguo published an article in Organic Letters. The article was 《Photocatalytic 1,1-Hydrofluoroalkylation of Alkynes with a Concurrent Vicinal Acylation: An Access to Fluoroalkylated Cyclic Ketones》. The article mentions the following:

A visible-light-induced 1,1-hydrofluoroalkylation of alkynes with a concomitant vicinal acylation is developed using THF (THF) as the hydrogen atom source. Various fluoroalkylated cyclic ketones, such as indanones, chroman-4-ones, 2,3-dihydroquinolin-4(1H)-ones, and 3,4-dihydronaphthalen-1(2H)-ones, can be efficiently synthesized with excellent trans-diastereoselectivity. The reaction represents the first example of 1,1-hydrofluoroalkylation of alkynes, thus providing a novel method for the construction of fluoroalkanes. In the experiment, the researchers used many compounds, for example, Ethylbromofluoroacetate(cas: 401-55-8COA of Formula: C4H6BrFO2)

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.COA of Formula: C4H6BrFO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Reductive Cross-Coupling of Aldehydes and Imines Mediated by Visible Light Photoredox Catalysis》 was written by Wang, Rui; Ma, Mengyue; Gong, Xu; Fan, Xinyuan; Walsh, Patrick J.. Name: o-BromobenzaldehydeThis research focused onvicinal amino alc preparation; benzoxazine indolone preparation; iridium photoredox catalyst reductive coupling aryl ketimine aldehyde. The article conveys some information:

In the presence of an iridium photoredox catalyst, aryl ketimines such as 2-BrC6H4N:CPh2 underwent photochem. reductive coupling with aldehydes such as benzaldehyde mediated by N,N-dimethylcyclohexylamine to give di- and triarylamino alcs. such as I. Under photoredox catalysis conditions, the conventional electrophilic reactivity of ketimines is inverted to generate nucleophilic species, allowing reductive coupling with aldehydes. I was converted to benzo-fused morpholine II with a palladium catalyst, while two amino alcs. underwent cyclization and oxidation to yield 3-indolones. In the experiment, the researchers used many compounds, for example, o-Bromobenzaldehyde(cas: 6630-33-7Name: o-Bromobenzaldehyde)

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Name: o-BromobenzaldehydeIt is also used in L-threonine aldolase-catalyzed enantio and diastereoselective aldol reactions. Further, it reacts with trichloromethane to prepare 1-(2-bromo-phenyl)-2,2,2-trichloro-ethanol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of C7H5BrOIn 2019 ,《Improving and Inverting Cβ-Stereoselectivity of Threonine Aldolase via Substrate-Binding-Guided Mutagenesis and a Stepwise Visual Screening》 was published in ACS Catalysis. The article was written by Chen, Qijia; Chen, Xi; Feng, Jinhui; Wu, Qiaqing; Zhu, Dunming; Ma, Yanhe. The article contains the following contents:

Threonine aldolase (TA)-catalyzed aldol condensation is a powerful tool for C-C bond formation under mild conditions, but the low Cβ-stereoselectivity has hampered its wide application. A stepwise visual screening method was developed to measure the activity and stereoselectivity of threonine aldolase-catalyzed aldol condensation by employing a stereoselective phenylserine dehydratase, enabling direct selection of mutants with higher Cβ-stereoselectivity. Mutants of L-PsTA from Pseudomonas sp. with improved or inverted stereoselectivity toward aromatic aldehydes were obtained by simultaneously mutating amino acid residues which interact with the amino and hydroxyl groups of the substrate and screening the resulting mutant libraries with this method. The mutation and enzyme-substrate docking studies provided some insights into the regulation of the Cβ-stereoselectivity by the enzyme-substrate interactions. This study offers a tool and useful guidance for further engineering of TAs to address the Cβ-stereoselectivity problem. After reading the article, we found that the author used o-Bromobenzaldehyde(cas: 6630-33-7Electric Literature of C7H5BrO)

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Electric Literature of C7H5BrOIt is also used in L-threonine aldolase-catalyzed enantio and diastereoselective aldol reactions. Further, it reacts with trichloromethane to prepare 1-(2-bromo-phenyl)-2,2,2-trichloro-ethanol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary