Tag: M.W=150-200

Li, Rong-Jian; Ling, Chun; Lv, Wen-Rui; Deng, Wei; Yao, Zi-Jian published the artcile< Cyclometalated Half-Sandwich Iridium(III) Complexes: Synthesis, Structure, and Diverse Catalytic Activity in Imine Synthesis Using Air as the Oxidant>, HPLC of Formula: 3959-07-7, the main research area is crystal structure mol iridium cyclometalated half sandwich complexes preparation; iridium cyclometalated complexes catalyst imine preparation air oxidant.

Four air-stable cyclometalated half-sandwich iridium complexes 1-4 with C,N-donor Schiff base ligands were prepared through C-H activation in moderate-to-good yields. These complexes have been well characterized, and their exact structure was elaborated on by single-crystal X-ray anal. The iridium(III) complexes 1-4 showed good catalytic activity in the imine synthesis under open-flask conditions (air as the oxidant) from primary amine oxidative homocoupling, secondary amine dehydrogenation, and the cross-coupling reaction of amine and alc. Substituents bonded on the ligands of the iridium complexes displayed little effect on the catalytic efficiency. The stability and good catalytic efficiency of the iridium catalysts, mild reaction conditions, and substrate universality showed their potential application in industrial production

Inorganic Chemistry published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, HPLC of Formula: 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yao, Shengxin; Gai, Lizhi; Jiang, Liang; Liu, Hui; Mack, John; Zhao, Yue; Chan, Kin Shing; Shen, Zhen published the artcile< Low-symmetry porphyrin analogues with flexible open-form dithienylethene moieties: Intense near IR Q bands>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is symmetry porphyrin dithienylethene moiety intense near IR Q band.

Two low-symmetry porphyrinoids with a dithienylethene (DTE) moiety incorporated into the core macrocycle, that contain either a CHO or a bridging Me ether group, have been serendipitously synthesized through a Rothemund condensation reaction. X-ray crystal structures demonstrate that CHO and bridging Me ether groups on the DTE moiety changes the conformation of the macrocycle and significantly influences the relative energies of the frontier orbitals of the porphyrinoid π-system and results in a remarkable enhancement and broadening of the Q bands in the 450-800 nm region compared to those of conventional tetrapyrrolic porphyrins. The introduction of a DTE moiety provides an effective strategy for achieving the intense near-IR region absorption that is required for many of the practical applications of porphyrinoids, through a disruption of the macrocyclic π-system that is similar to that of naturally occurring corrins.

Dyes and Pigments published new progress about Bond angle, dihedral. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Yong; Cao, Xinyi; Zhao, Leyao; Pi, Chao; Ji, Jingfei; Cui, Xiuling; Wu, Yangjie published the artcile< Generalized Chemoselective Transfer Hydrogenation/Hydrodeuteration>, COA of Formula: C8H9Br, the main research area is unsaturated compound palladium catalyst chemoselective transfer hydrogenation.

A generalized, simple and efficient transfer hydrogenation of unsaturated bonds was developed using HBPin and various proton reagents as hydrogen sources. The substrates, including alkenes, alkynes, aromatic heterocycles, aldehydes, ketones, imines, azo, nitro, epoxy and nitrile compounds, were all applied to this catalytic system. Various groups, which cannot survive under the Pd/C/H2 combination, were tolerated. The activity of the reactants was studied and the trends were as follows: styrene>diphenylmethanimine>benzaldehyde>azobenzene>nitrobenzene>quinoline>acetophenone>benzonitrile. Substrates bearing two or more different unsaturated bonds were also investigated and transfer hydrogenation occurred with excellent chemoselectivity. Nano-palladium catalyst in situ generated from Pd(OAc)2 and HBPin extremely improved the TH efficiency. Furthermore, chemoselective anti-Markovnikov hydrodeuteration of terminal aromatic olefins was achieved using D2O and HBPin via in situ HD generation and discrimination.

Advanced Synthesis & Catalysis published new progress about Alkanes Role: RCT (Reactant), RACT (Reactant or Reagent). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, COA of Formula: C8H9Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Inoa, Joan; Patel, Mansi; Dominici, Grecia; Eldabagh, Reem; Patel, Anjali; Lee, John; Xing, Yalan published the artcile< Benzylic Hydroperoxidation via Visible-light Induced Csp3-H activation>, Synthetic Route of 2725-82-8, the main research area is benzylic hydroperoxidn carbon hydrogen activation catalyst.

A highly efficient benzylic hydroperoxidn. e.g., C6H5CH2CH2C6H5 has been realized through a visible-light induced Csp3-H activation. It believe that this reaction undergoes a direct HAT mechanism catalyzed by eosin Y. This approach features the use of a metal-free catalyst (Eosin Y), an energy-economical light source (blue LED), and a sustainable oxidant (mol. oxygen). A variety of benzylic hydroperoxides e.g., C6H5CH(OOH)CH2C6H5 and several endoperoxides e.g., 4-NO2C6H4CH(CH3)OOC(O)CH3 was successfully prepared with good yields and excellent functional group compatibility.

Journal of Organic Chemistry published new progress about Alkylarenes Role: RCT (Reactant), RACT (Reactant or Reagent). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Synthetic Route of 2725-82-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Avinash, Iruthayaraj; Parveen, Sabeeha; Anantharaman, Ganapathi published the artcile< Backbone Boron-Functionalized Imidazoles/Imidazolium Salts: Synthesis, Structure, Metalation Studies, and Fluoride Sensing Properties>, Application of C9H11Br, the main research area is boryl phosphino functionalized imidazole imidazolium salt preparation crystal structure; metalation fluoride sensing boryl phosphino functionalized imidazole imidazolium salt; copper boryl phosphino imidazole copper preparation photophys crystal structure.

Incorporation of a Lewis acidic BMes2 (Mes = mesityl) moiety at the backbone of the imidazole ring was achieved by metal-halogen exchange procedure. Among them, two isomeric boron-phosphine functionalized imidazoles (3 and 6), monoboron-functionalized imidazoles (4 and 5), and its corresponding imidazolium salts were synthesized and thoroughly characterized. The solid-state structure of 3 reveals a dimeric B-N adduct that possesses six-membered [C-B-N]2 ring, and 5 crystallizes as tetrameric B-N adduct that forms an interesting 16-membered macrocycle, whereas 4 and 6 were obtained as monomeric BMes2-substituted imidazoles. 6 Behaves as a P^N-type ligand upon the coordination with CuI to afford luminescent L2Cu4I4-type metal complexes (10 and 11) whose photophys. properties were also studied. The presence (in 10) and the absence (in 11) of BMes2 made a remarkable impact on fluorescence emission causing shift from the green (10) to orange (11) region. The fluoride sensing properties of BMes2-containing imidazoles (4 to 9) were studied using UV-vis and fluorescence spectroscopy. Various backbone boron-functionalized imidazoles were prepared conveniently from 4,5-diiodo-1-methylimidazole through metal-halogen exchange procedure, and the corresponding imidazolium salts were prepared by quaternization reaction. Fluoride sensing properties of six imidazol(ium)e-based boranes were evaluated. In addition, metalation studies of BMes2-substituted P^N-type imidazole ligand with CuI led to the formation of two luminescent [(P^N)2Cu4I4]-type copper clusters, and their photophys. studies illustrate the impact of the BMes2 group on their electronic/photophys. properties.

Inorganic Chemistry published new progress about Crystal structure. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Application of C9H11Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Bin; Yan, Zicong; Liu, Liyan; Wang, Jiawei; Zha, Zhenggen; Wang, Zhiyong published the artcile< TBN-mediated regio- and stereoselective sulfonylation & oximation (oximosulfonylation) of alkynes with sulfonyl hydrazines in EtOH/H2O>, Synthetic Route of 2725-82-8, the main research area is sulfonyl aryl ketoxime regioselective stereoselective preparation; tandem sulfonylation oximation terminal aryl alkyne arylsulfonylhydrazine butyl nitrite; byproduct radical inhibition tandem sulfonylation oximation alkyne arylsulfonylhydrazine; mechanism tandem sulfonylation oximation alkyne arylsulfonylhydrazine nitrite.

Terminal aryl alkynes such as phenylacetylene underwent regioselective and diastereoselective cascade sulfonylation and oximation reactions with arylsulfonyl hydrazides such as 4-MeC6H4SO2NHNH2 mediated by tert-Bu nitrite (TBN), hydrazine hydrate, and imidazole in 40:1 EtOH:H2O to yield (Z)-α-sulfonyl aryl Me ketoximes such as (Z)-4-MeC6H4SO2CH2C(:NOH)Ph. The mechanism was studied through identification of byproducts and radical inhibition and deuterium incorporation studies.

Green Chemistry published new progress about Alkynes, aryl Role: RCT (Reactant), RACT (Reactant or Reagent) (terminal). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Synthetic Route of 2725-82-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xia, Dong; Duan, Xin-Fang published the artcile< Tandem vinyl radical Minisci-type annulation on pyridines: one-pot expeditious access to azaindenones>, Product Details of C8H9Br, the main research area is azaindenone preparation regioselective; pyridine alkylative alkenylative tandem annulation.

A new regiospecific alkylative/alkenylative cascade annulation of pyridines e.g., I has been achieved while the corresponding classic Minisci alkylative annulation failed. This protocol provides a novel and expeditious access to azaindenones and related compounds e.g., II via cross-dehydrogenative coupling with the long-standing problem of C2/C4 regioselectivity of pyridines being well addressed.

Chemical Communications (Cambridge, United Kingdom) published new progress about Cyclization (alkylative, alkenylative, regioselective). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Product Details of C8H9Br.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sun, Yue; Yang, Zi-Hui; Gu, Wen published the artcile< Synthesis, crystal structure and antifungal activity of new furan-1,3,4-oxadiazole carboxamide derivatives>, Formula: C7H8BrN, the main research area is furan oxadiazole carboxamide preparation antifungal activity crystal structure.

A series of novel furan-1,3,4-oxadiazole carboxamide derivatives I (R = H, Me, Br, Cl, F) were designed, synthesized and characterized by spectroscopic methods including HR-MS, 1H- and 13C-NMR. The crystal structure of compound I (R = Br) was determined by single-crystal X-ray diffraction. The compound crystallizes in the triclinic system, space group P1 with a = 4.7261(5), b = 10.4672(11), c = 14.5886(13) Å, α = 106.081(4)°, β = 91.043(3)°, γ = 99.456(4)°, Z = 2, V = 682.48(12) Å3, Mr = 348.16, Dc = 1.694 Mg/m3, S = 1.008, μ = 3.025 mm-1, F(000) = 348, the final R = 0.0775 and wR = 0.2080 for 2774 observed reflections (I > 2σ(I)). There are two kinds of hydrogen bonds (N(3)-H(3A)…N(2) and C(8)-H(8A)…O(3)) present in its crystal structure. The preliminary antifungal assay showed that compounds I (R = Cl, F) exhibited significant antifungal activities against several plant pathogenic fungi.

Chinese Journal of Structural Chemistry published new progress about Amides Role: PAC (Pharmacological Activity), PRP (Properties), SPN (Synthetic Preparation), THU (Therapeutic Use), BIOL (Biological Study), PREP (Preparation), USES (Uses). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Bouamrane, Soukaina; Khaldan, Ayoub; Maghat, Hamid; Ajana, Mohammed Aziz; Bouachrine, Mohammed; Lakhlifi, Tahar published the artcile< In-silico design of new triazole analogs using QSAR and molecular docking models>, Name: 4-Bromobenzylamine, the main research area is triazole preparation docking antifungal QSAR.

The 3D-QSAR using CoMFA and CoMSIA were carried out on series of novel triazole analogs I [R = NEt, N(CH2)3, NCH2C6H4, etc.] as antifungal agents specially to treat candida albicans. The CoMFA and CoMSIA models using twelve mols. in the training set gives a Q2 of 0.53 and 0.34 resp., and high values of R2(0.99 and 0.96 resp.). CoMFA and CoMSIA models produced the contour maps to figure out the structural requirements that influence the activity and consequently propose new mols. with high predicted activities. Mol. docking was performed to affirm the stability of the predicted compounds in the receptor with PDB code: 4uym.

Rhazes: Green and Applied Chemistry published new progress about Fungicides. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Name: 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wu, Zhenyu; Huang, Xiubing; Li, Xiangjun; Hai, Guangtong; Li, Baozhen; Wang, Ge published the artcile< Covalent-organic frameworks with keto-enol tautomerism for efficient photocatalytic oxidative coupling of amines to imines under visible light>, Application In Synthesis of 3959-07-7, the main research area is amine imine covalent organic framework photocatalytic oxidation.

Photocatalytic oxidation of organic mols. into highly value-added products is an innovative and challenging research which has gradually attracted remarkable attention of scientists. In this work, it is demonstrated that the COF-TpPa with keto-enol tautomerism equilibrium structure shows excellent performance (yield>99% after 8 h) in the selective photocatalytic oxidative coupling of amines to imines under visible light irradiation It is revealed that three kinds of reactive oxygen species (superoxide radical, hydroxyl radical and singlet oxygen) participate in this photocatalytic oxidation reaction. In addition, hydrogen protons cleaved from the benzyl are proven to be reduced to hydrogen in the conduction band of COF-TpPa in anaerobic atm., accompanied with the formation of imines. The direct hydrogen evolution from amine provides an effective way to extract clean energy from organic mol. as well as the production of value-added chems. As a contrast, COF-LZU1 with similar structure and chem. composition to COF-TpPa but without keto-enol tautomerism exhibits worse optical properties and photocatalytic performance. It is also demonstrated that keto-enol tautomerism favors the adsorption of benzylamine based on the characterization results and theor. calculations

Science China: Chemistry published new progress about Adsorption. 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