Month: October 2022

Li, Jia; Bao, Wenhao; Tang, Zhaocheng; Guo, Baodang; Zhang, Shiwei; Liu, Haili; Huang, Shuping; Zhang, Yan; Rao, Yijian published the artcile< Cercosporin-bioinspired selective photooxidation reactions under mild conditions>, SDS of cas: 3959-07-7, the main research area is benzylic derivative oxygen cercosporin light photooxidation; carbonyl preparation; amine oxygen cercosporin light photooxidation; aldehyde preparation; sulfide oxygen cercosporin light photooxidation; sulfoxide preparation.

The development of an efficient system for selective oxidation of organic compounds to generate more valuable compounds with mol. oxygen is a significant challenge in industrial chem. Bioinspired by the ability of naturally occurring perylenequinonoid pigments (PQPs) to generate reactive oxygen species (ROS) upon photoirradiation, here we report that cercosporin, one of the perylenequinonoid pigments, can function as a cost-effective and environmentally friendly photocatalyst for a wide range of selective oxidations, including benzylic C-H bonds to carbonyls, amines to aldehydes, and sulfides to sulfoxides. All of the representative reactions proceeded smoothly with high efficiency under mild conditions. Owing to the use of inexpensive metal-free visible light-driven photocatalyst produced from microbial fermentation with cheap glucose as the starting material and the ease of handling, we expect that this developed method will be particularly attractive for many more applications in synthetic transformation.

Green Chemistry published new progress about Aldehydes Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, SDS of cas: 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lyu, Shaoshuai; Hao, Huimin; Li, Xia; Lang, Xianjun published the artcile< Cooperative TiO2 photocatalysis with TEMPO and N-hydroxysuccinimide for blue light-driven selective aerobic oxidation of amines>, Safety of 4-Bromobenzylamine, the main research area is TEMPO hydroxysuccinimide photocatalysis aerobic oxidation; Amine/imine transformation; Cooperative photocatalysis; Reaction channel; Semiconductor; Visible light.

TiO2 has been the focus of attention in semiconductor photocatalysis for several decades because it can potentially settle the grand energy and environmental issues with earth-abundant elements of Ti and O. However, because of its wide band gap, TiO2 can only collect UV light, hindering its practical applications under the illumination of sunlight. In view of this, an interesting phenomenon of light-driven adsorption of amines onto TiO2 to form a visible light-absorbing complex was adapted to assemble smart photocatalysis. The endurance of this complex was eminently refurbished by blue light-driven continuous adsorption of amines. This in turn promoted a vital selective chem. transformation, blue light-driven selective oxidation of amines into imines with atm. dioxygen (O2). More importantly, the inclusion of TEMPO and N-hydroxysuccinimide (NHS) into the smart photocatalytic system could cooperatively expedite the blue light-driven selective aerobic oxidation of amines into imines through dual independent reaction channels, resembling that of enzymic catalysis. This work underscores the importance of manoeuvring multiple reaction channels by cooperative photocatalysis during selective chem. transformations.

Chemosphere published new progress about Adsorption. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Safety of 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gopalaiah, Kovuru; Tiwari, Ankit published the artcile< Synthesis of (E)-3-Alkylideneindolin-2-ones by an Iron-Catalyzed Aerobic Oxidative Condensation of Csp3-H Bonds of Oxindoles and Benzylamines>, Application In Synthesis of 3959-07-7, the main research area is alkylideneindolinone preparation iron catalyst oxidative condensation oxindole benzylamine.

A novel synthetic route for the construction of (E)-3-alkylideneindolin-2-ones through iron-catalyzed aerobic oxidative condensation of oxindoles with benzylamines was developed. This oxidative reaction involves a sequence of C-H activation, amine self-condensation, nucleophilic addition, and C-C double bond formation. The synthetic importance of this protocol was demonstrated by preparing tyrosine kinase inhibitors, anticonvulsant and antitumor agents, and other valuable 3-alkylideneindolin-2-one derivatives Key intermediates were isolated and a plausible mechanistic pathway for the reaction is discussed.

European Journal of Organic Chemistry published new progress about Aralkyl amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Application In Synthesis of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cheng, Xiuyan; Zhang, Jianling; Sha, Yufei; Xu, Mingzhao; Duan, Ran; Su, Zhuizhui; Li, Jialiang; Wang, Yanyue; Hu, Jingyang; Guan, Bo; Han, Buxing published the artcile< Periodically nanoporous hydrogen-bonded organic frameworks for high performance photocatalysis>, Formula: C7H8BrN, the main research area is hydrogen bonded organic framework photocatalysis oxidative coupling reaction.

The development of highly catalytic hydrogen-bonded organic frameworks (HOFs) is of great importance, but remains challenging. Herein, we demonstrate the fabrication of a periodically nanoporous HOF for high performance photocatalysis. Compared with the conventional microporous HOFs, the nanoporous HOF architecture has a larger number of free carboxyl groups on the surface and presents greatly improved photoelectrochem. properties. It exhibits high catalytic activity for the photo-oxidative coupling of amines under mild conditions such as air atm. and room temperature and without any co-catalysts, sacrificial reagents or photosensitizers. The relationship between the structure, properties and catalytic performance of the nanoporous HOF was studied by exptl. and theor. investigations. It shows that such a HOF structure facilitates reactant adsorption and O2 dissociation, thus promoting the oxidative coupling reaction. This work provides a new way for improving the catalytic performance of a single HOF.

Nanoscale published new progress about Activation energy. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Yajie; Sun, Dan; Du, Lizhi; Jiao, Yuzhen; Han, Wei; Tian, Guohui published the artcile< Sandwich-Structured Hybrid of NiCo Nanoparticles-Embedded Carbon Nanotubes Grafted on C3N4 Nanosheets for Efficient Photodehydrogenative Coupling Reactions>, Formula: C7H8BrN, the main research area is nickel cobalt carbon nanotube benzylamine green photodehydrogenation catalyst; NiCo nanoparticles; nitrogen-deficient C3N4; nitrogen-doped carbon nanotubes; photodehydrogenative coupling; sandwich structure.

Exploring cheap and efficient hybrid catalysts offers exciting opportunities for enhancing the performance of photocatalysts in the green organic synthesis field. Herein, a facile and effective approach is designed for the synthesis of a sandwich-structured hybrid in which NiCo bimetallic nanoparticles are embedded in the tip of nitrogen-doped carbon nanotubes (N-CNTs) grafted on both sides of a nitrogen deficient C3N4 (Nv-C3N4) nanosheet for photodehydrogenative coupling reactions. Such a brand-new type of sandwich-structured hybrid comprises Nv-C3N4 nanosheets and surrounding N-CNTs embedded with NiCo nanoparticles at their tips. Remarkably, the resultant hybrid exhibits integrated functionalities, abundant active sites, enhanced visible light absorption, and excellent interfacial charge transfer ability. As a result, the optimized NiCo@N-CNTs@Nv-C3N4 photocatalyst shows significantly improved photodehydrogenative coupling performance of amines to imines compared to the control single-metal-based catalysts (Ni@N-CNTs@Nv-C3N4 and Co@N-CNTs@Nv-C3N4). The mechanistic investigation through exptl. and computational study demonstrates that, compared with single-metal-based hybrids, the NiCo bimetallic hybrid exhibits stronger amine adsorption and weaker photogenerated hydrogen atom adsorption, thus promoting the dehydrogenative activation of primary amines and fast generation of imines. This work presents a promising insight for designing and preparing efficient photocatalysts to trigger organic synthesis in high yields.

ACS Applied Materials & Interfaces published new progress about Carbon nanotubes. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tu, Yalin; Sun, Yameng; Qiao, Shuang; Luo, Yao; Liu, Panpan; Jiang, Zhong-Xing; Hu, Yumin; Wang, Zifeng; Huang, Peng; Wen, Shijun published the artcile< Design, Synthesis, and Evaluation of VHL-Based EZH2 Degraders to Enhance Therapeutic Activity against Lymphoma>, Product Details of C7H8BrN, the main research area is lymphoma EZH2 inhibitors degraders VHL CRBN YM181 YM281 antitumor.

Traditional EZH2 inhibitors are developed to suppress the enzymic methylation activity, and they may have therapeutic limitations due to the nonenzymic functions of EZH2 in cancer development. Here, we report proteolysis-target chimera (PROTAC)-based EZH2 degraders to target the whole EZH2 in lymphoma. Two series of EZH2 degraders were designed and synthesized to hijack E3 ligase systems containing either von Hippel-Lindau (VHL) or cereblon (CRBN), and some VHL-based compounds were able to mediate EZH2 degradation Two best degraders, YM181 (I) and YM281 (II), induced robust cell viability inhibition in diffuse large B-cell lymphoma (DLBCL) and other subtypes of lymphomas, outperforming a clin. used EZH2 inhibitor EPZ6438 (tazemetostat) that was only effective against DLBCL. The EZH2 degraders displayed promising antitumor activities in lymphoma xenografts and patient-derived primary lymphoma cells. Our study demonstrates that EZH2 degraders have better therapeutic activity than EZH2 inhibitors, which may provide a potential anticancer strategy to treat lymphoma.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Product Details of C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary