Category: nitriles-buliding-blocks

In 2022,Altan, Orhan published an article in Applied Organometallic Chemistry. The title of the article was 《A rare example of the in-situ formation of palladium nanoparticles: The emergence of catalytically active palladium nanoparticles from Pd (II) phosphine complexes in the Suzuki-Miyaura coupling reaction》.Name: 2-Bromobenzonitrile The author mentioned the following in the article:

Pd (II) complexes of phosphino-benzaldoxime ligands were synthesized, characterized and tested in SMC reactions. Interestingly, it was found that the catalytic activity increased by 11 times when the amount of catalyst was reduced by 10-fold and increased by five times when the amount of catalyst was decreased by 100-fold. The detailed analyses revealed that the palladium nanoparticles (NPs) are responsible for the catalytic activity which was formed in the reaction medium. A plausible mechanism was proposed for the formation of Pd NPs from palladium phosphino-benzaldoxime complexes in the reaction medium. This study is expected to contribute to the debate over whether the catalytic activity of phosphine-palladium complexes in SMC reactions results from a homogeneous or heterogeneous pathway. In the experiment, the researchers used 2-Bromobenzonitrile(cas: 2042-37-7Name: 2-Bromobenzonitrile)

2-Bromobenzonitrile(cas: 2042-37-7) belongs to a group of ortho-substituted bromobenzenes that have varying hepatotoxicity effects in the presence of rat liver microsomes in vitro. 2-Bromobenzonitrile is also used as a starting material to synthesize novel benzothiophene derivatives that were found to exhibit antibacterial and antifungal activity.Name: 2-Bromobenzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

In 2022,Chahkamali, Farhad Omarzehi; Sobhani, Sara; Sansano, Jose Miguel published an article in Catalysis Letters. The title of the article was 《Water-Dispersible Pd-N-Heterocyclic Carbene Complex Immobilized on Magnetic Nanoparticles as a New Heterogeneous Catalyst for Fluoride-Free Hiyama, Suzuki-Miyaura and Cyanation Reactions in Aqueous Media》.Reference of 4-Fluorobenzonitrile The author mentioned the following in the article:

Pd-N-heterocyclic carbine complex immobilized on magnetic nanoparticles was synthesized and characterized by different techniques such as FT-IR, XPS, TEM, EDX, FESEM, VSM, TGA and ICP. The synthesized catalyst was used as a new water dispersible heterogeneous catalyst in the fluoride-free Hiyama, Suzuki-Miyaura and cyanation reactions in pure water. By this method, different types of biaryls and aryl nitriles were synthesized in good to high yields by the reaction of a variety of aryl iodides, bromides and chlorides with triethoxyphenylsilane, phenylboronic acid and K4[Fe(CN)6]·3H2O, resp. The presence of sulfonates as hydrophilic groups on the surface of the catalyst confers a highly water dispersible, active and yet magnetically recoverable Pd catalyst. The possibility to perform the reaction in water as a green medium, ease of the catalyst recovery and reuse by magnetic separation, and the absence of any additives or co-solvents make this method as an eco-friendly and economical protocol for the synthesis of biaryl derivatives and aryl nitriles.4-Fluorobenzonitrile(cas: 1194-02-1Reference of 4-Fluorobenzonitrile) was used in this study.

4-Fluorobenzonitrile(cas: 1194-02-1) is used as chemical intermediate, solvent for perfumes and pharmaceuticals, stabilizer for chlorinated solvents, HPLC analysis, catalyst and component of transition-metal complex catalysts.Reference of 4-Fluorobenzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

In 2022,Zheng, Yuanqin; Zhou, Yuqiao; Zhang, Yan; Deng, Pengchi; Zhao, Xiaohu; Jiang, Shichao; Du, Guangxi; Shen, Xin; Xie, Xinyu; Su, Zhishan; Yu, Zhipeng published an article in Chemistry – An Asian Journal. The title of the article was 《Water-Involved Ring-Opening of 4-Phenyl-1,2,4-triazoline-3,5-dione for “”Photo-Clicked”” Access to Carbamoyl Formazan Photoswitches In Situ》.Electric Literature of C7H3BrFN The author mentioned the following in the article:

A “”photo-click”” method that involved nitrile imine from diarylsydnone to capture diazenecarbonyl-phenyl-carbamic acid (DACPA) generated by water-promoted ring-opening of PTAD was described. DFT calculation revealed that H-bonding interactions between PTAD and water were vital to form DACPA which exhibited an umpolung effect during ligation by nature bond orbit anal. (NBO). The ultra-fast ligation resulted in carbamoyl formazans, as a unique Z <-> E photo-switchable linker on target mols., including peptide and drugs, with excellent anti-fatigue performance. This strategy was showcased to construct highly functionalized carbamoyl formazans such as I [R = H, 4-F, 4-Ph, etc.; R1 = 4-CF3, 3-CN, etc.; R2 = H, 4-F, 4-MeO, etc.] in situ for photo-pharmacol. and material studies, which also expanded chem. of PTAD in aqueous media.4-Bromo-2-fluorobenzonitrile(cas: 105942-08-3Electric Literature of C7H3BrFN) was used in this study.

4-Bromo-2-fluorobenzonitrile(cas:105942-08-3) is used as a reagent in the synthesis of picolinamide derivatives as a novel class of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitors.Electric Literature of C7H3BrFN 4-Bromo-2-fluorobenzonitrile is also used in the preparation of fluorinated CB2 receptor agonists for PET imaging.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Jia, Qianfa; Yin, Guoliang; Lan, Yunfei; Lin, Yinhe; Ren, Qiao published an article in 2021. The article was titled 《Base-mediated Benzannulation Reactions for the Synthesis of Densely Functionalized Aryl α-Keto Esters》, and you may find the article in Asian Journal of Organic Chemistry.Category: nitriles-buliding-blocks The information in the text is summarized as follows:

A novel and straightforward strategy for the construction of versatile densely functionalized aryl α-keto esters were disclosed through a one-pot and efficient [4+2] benzannulation reaction of α-cyano-β-methylenones and ynediones, which were synthesized easily from the corresponding starting materials. This protocol featured high yield, mild metal-free reaction condition, high atom economy, high functional-group tolerance, easy handing and gram-scale synthesis. In the part of experimental materials, we found many familiar compounds, such as 3-Oxo-3-phenylpropanenitrile(cas: 614-16-4Category: nitriles-buliding-blocks)

3-Oxo-3-phenylpropanenitrile(cas: 614-16-4) has been used in the synthesis of substituted naphtho[1,8-bc]pyrans. It was also used as building block in the preparation of 4H-pyrans, 2-pyridones, furans and carbocyclics.Category: nitriles-buliding-blocks

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Lai, Liming; Fang, Bing; Fan, Mingyu; Cheng, Wenyu; Yin, Meizhen published an article in 2021. The article was titled 《Modulating Room-Temperature Phosphorescence through the Synergistic Effect of Heavy-Atom Effect and Halogen Bonding》, and you may find the article in Journal of Physical Chemistry C.Synthetic Route of C7H3BrFN The information in the text is summarized as follows:

Organic room-temperature phosphorescence (RTP) materials have been paid great attention for their promising applications in anticounterfeiting, optical device, and bioimaging. However, owing to inefficient intersystem crossing (ISC), it still remains a challenge to develop organic RTP materials with both high quantum yields (Φp) and long lifetime (τp). Herein, a reasonable strategy is presented to modulate and balance the Φp and τp through the synergy effect of halogen bonding and heavy-atom effect (HAE). Modulated RTP properties are successfully achieved by the introduction of halogen atoms into 4-(9-H-carbazol-9-yl) benzonitrile due to enhanced ISC. Especially, CzBzBr shows the highest Φp of 23.50% and CzBzCl exhibits the longest τp of 607.4 ms. The excessive HAE of the bromine atom decreases the τp of CzBzBr, while moderate HAE of the chlorine atom endows CzBzCl with both high Φp and long τp. In addition, the halogen bondings lead to specific halogen-mediated mol. cluster packing, further suppressing nonradiative transition for ultralong RTP emission. Through simple phys. co-crystallization with adjusting the mass ratio of CzBzCl/CzBzBr, co-crystals with modulated RTP properties and white-light emission phenomena are obtained. Our study provides a rationale method to develop modulated high-efficiency RTP materials, which will expand their practical applications.4-Bromo-2-fluorobenzonitrile(cas: 105942-08-3Synthetic Route of C7H3BrFN) was used in this study.

4-Bromo-2-fluorobenzonitrile(cas:105942-08-3) is used as a OLED intermediate, Pharmaceutical, electronic and chemical intermediate.Synthetic Route of C7H3BrFN It is used in the synthesis of heterocycles and liquid crystals.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wang, Risheng; Peng, Zhihua; Wu, Pingping; Lu, Jinzhi; Rood, Mark J.; Sun, Hongman; Zeng, Jingbin; Wang, Youhe; Yan, Zifeng published an article in 2021. The article was titled 《Direct Synthesis of Nanosheet-Stacked Hierarchical “”Honey Stick-like”” MFI Zeolites by an Aromatic Heterocyclic Dual-Functional Organic Structure-Directing Agent》, and you may find the article in Chemistry – A European Journal.Electric Literature of C8H6BrN The information in the text is summarized as follows:

Soft template designing is the most promising strategy for the synthesis of zeolite nanosheets. MFI nanosheets directed by soft templates (containing long-chain alkyl groups or aromatic groups as hydrophobic component) can be found frequently. However, so far, MFI nanosheets synthesized by soft templates with aromatic heterocycle groups (e. g., s-triazine groups) are rare. Herein, a nanosheet-stacked hierarchical MFI zeolite (NSHM) has been synthesized by using a triply branched s-triazine-based surfactant as a bifunctional organic structure-directing agent. On the basis of a geometrical match relationship, a formation model has been proposed. Synthesized NSHM had abundant mesopores stacked by nanosheets and exhibited a high surface area (430 m2 · g-1). The 1 wt% Pd/NSHM attained a significant increase in yield of cyclohexanol/cyclohexanone mixture (from 66 to 85 %) in the oxidation of cyclohexane compared with Silicalite-1 and SBA-15 as supports.4-Cyanobenzyl bromide(cas: 17201-43-3Electric Literature of C8H6BrN) was used in this study.

4-Cyanobenzyl bromide(cas: 17201-43-3) is an important intermediate for pharmaceutical production. It can be used for the synthesis of a series of piperidine-linked aromatic diimidazolines, which have been synthesized as conformationally restricted congeners of the anti-Pneumocystis carinii (PCP) drug, Pentamidine.Electric Literature of C8H6BrN

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

The author of 《An Experimental Acidity Scale for Intramolecularly Stabilized Silyl Lewis Acids》 were Kuenzler, Sandra; Rathjen, Saskia; Merk, Anastasia; Schmidtmann, Marc; Mueller, Thomas. And the article was published in Chemistry – A European Journal in 2019. HPLC of Formula: 1194-02-1 The author mentioned the following in the article:

A new NMR-based Lewis acidity scale is suggested and its application is demonstrated for a family of silyl Lewis acids. The reaction of p-fluorobenzonitrile (FBN) with silyl cations that are internally stabilized by interaction with a remote chalcogenyl or halogen donor yields silylated nitrilium ions with the silicon atom in a trigonal bipyramidal coordination environment. The 19F NMR chem. shifts and the 1J(CF) coupling constants of these nitrilium ions vary in a predictable manner with the donor capability of the stabilizing group. The spectroscopic parameters are suitable probes for scaling the acidity of Lewis acids. These new probes allow for the discrimination between very similar Lewis acids, which is not possible with conventional NMR tests, such as the well-established Gutmann-Beckett method. In the experiment, the researchers used 4-Fluorobenzonitrile(cas: 1194-02-1HPLC of Formula: 1194-02-1)

4-Fluorobenzonitrile(cas: 1194-02-1) is used as chemical intermediate, solvent for perfumes and pharmaceuticals, stabilizer for chlorinated solvents, HPLC analysis, catalyst and component of transition-metal complex catalysts.HPLC of Formula: 1194-02-1

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

In 2019,ACS Medicinal Chemistry Letters included an article by Hu, Xianglong; Wan, Baojie; Liu, Yang; Shen, Jiayi; Franzblau, Scott G.; Zhang, Tianyu; Ding, Ke; Lu, Xiaoyun. Quality Control of 4-Bromo-2-fluorobenzonitrile. The article was titled 《Identification of Pyrazolo[1,5-a]pyridine-3-carboxamide Diaryl Derivatives as Drug Resistant Antituberculosis Agents》. The information in the text is summarized as follows:

A series of pyrazolo[1,5-a]pyridine-3-carboxamide (PPA) derivatives bearing diaryl side chain was designed and synthesized as new antituberculosis agents, aiming to improve the efficacy toward drug resistant Mycobacterium tuberculosis (Mtb) strains. Most of the substituted di-Ph and heterodiaryl PPAs exhibited excellent in vitro potency against the drug susceptive H37Rv strain (MIC < 0.002-0.381 μg/mL) and drug resistant Mtb strains (INH-resistant (rINH), MIC < 0.002-0.465 μg/mL; RMP-resistant (rRMP), MIC < 0.002-0.004 μg/mL). Noticeably, some compounds also showed very low cytotoxicity against Vero cells. Further, compound I displayed good pharmacokinetic profiles with oral bioavailability (F) of 41% and significantly reduced the bacterial burden in an autoluminescent H37Ra infected mouse model. The experimental part of the paper was very detailed, including the reaction process of 4-Bromo-2-fluorobenzonitrile(cas: 105942-08-3Quality Control of 4-Bromo-2-fluorobenzonitrile)

4-Bromo-2-fluorobenzonitrile(cas:105942-08-3) is used as a reagent in the synthesis of picolinamide derivatives as a novel class of 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitors.Quality Control of 4-Bromo-2-fluorobenzonitrile 4-Bromo-2-fluorobenzonitrile is also used in the preparation of fluorinated CB2 receptor agonists for PET imaging.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

In 2019,Journal of Medicinal Chemistry included an article by Pirzer, Anna S.; Lasch, Roman; Friedrich, Heike; Huebner, Harald; Gmeiner, Peter; Heinrich, Markus R.. COA of Formula: C8H6BrN. The article was titled 《Benzyl Phenylsemicarbazides: A Chemistry-Driven Approach Leading to G Protein-Biased Dopamine D4 Receptor Agonists with High Subtype Selectivity》. The information in the text is summarized as follows:

Many subtype-selective dopamine receptor ligands developed for the D2-D4 family incorporate a 1-arylpiperazine-derived primary recognition motif, which is connected to a lipophilic moiety occupying an extended binding pocket (EBP) of the receptor via an aliphatic linker of variable lengths. The evaluation of a novel group of dopamine receptor ligands now showed that highly subtype-selective ligands [up to Ki(D4.4) = 0.25 nM, D2L/D4.4 = 320, D3/D4.4 = 710 for APH199 (17)] can be obtained by choosing a relatively large and conformationally flexible 1-benzyl-1-phenylsemicarbazide substructure to fill the EBP. The novel chemotype APH199 (17) was found to act as a full agonist at the D4 receptor showing significant bias toward G protein activation over β-arrestin recruitment in comparison to quinpirole. In the experiment, the researchers used many compounds, for example, 4-Cyanobenzyl bromide(cas: 17201-43-3COA of Formula: C8H6BrN)

4-Cyanobenzyl bromide(cas: 17201-43-3) is a white solid. Its melting point is 113-117°C, and flash point is 125.1°C. It is insoluble in water at 20°C. It is stable under normal temperatures and pressures. It should be stored at 0-5°C.COA of Formula: C8H6BrN

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

In 2019,Asian Journal of Organic Chemistry included an article by Kim, Jihyeon; Golime, Gangadhararao; Kim, Hun Young; Oh, Kyungsoo. Safety of 4-Fluorobenzonitrile. The article was titled 《Copper(II)-Catalyzed Aerobic Oxidation of Amines: Divergent Reaction Pathways by Solvent Control to Imines and Nitriles》. The information in the text is summarized as follows:

The Cu(OAc)2-catalyzed aerobic oxidations of amines to imines RR1CH=NR2 [R = H, Me; R1 = Ph, 4-MeC6H4, 2-thienyl, etc.; R2 = cyclohexyl, Ph, Bn, etc.] and nitriles R3CN [R3 = n-heptyl, Ph, 2-thienyl, etc.] were identified under solvent control conditions and in the presence of mol. oxygen. By modulating the aerobic oxidation pathways of Cu(OAc)2 catalyst in different reaction solvents, the selective formations of homo-coupled imines, cross-coupled imines and nitriles were achieved from amine derivatives In the experiment, the researchers used 4-Fluorobenzonitrile(cas: 1194-02-1Safety of 4-Fluorobenzonitrile)

4-Fluorobenzonitrile(cas: 1194-02-1) is used in the synthesis of flurenones, pharmaceutical prerequisites, as well as opiod receptor antagonists.Safety of 4-Fluorobenzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts