947-84-2

Usage

Uses

Used in Pharmaceutical Industry:
2-Biphenylcarboxylic acid is used as a pharmaceutical intermediate for the preparation of neuropeptide FF receptor antagonists. These antagonists have potential applications in the treatment of pain and addiction.
2-Biphenylcarboxylic acid is also used in the synthesis of disubstituted piperidines as orexin receptor antagonists. Orexin receptor antagonists have potential therapeutic applications in the treatment of insomnia, narcolepsy, and other sleep disorders.
Used in Organic Synthesis:
2-Biphenylcarboxylic acid is used as a starting material in the synthesis of various organic compounds. The reaction of 2?-substituted biphenyl-2-carboxylic acids (where the 2?-substituent is H, CO2H, NO2, Cl, OMe, or CO2Me) with lead tetra-acetate in refluxing benzene solution, under a nitrogen atmosphere, affords 3,4-benzocoumarin as a major organic product. This reaction is useful for the synthesis of various benzocoumarin derivatives, which have potential applications in pharmaceuticals, agrochemicals, and other industries.

Purification Methods

Crystallise the acid from *C6H6/pet ether or aqueous EtOH. [Beilstein 9 IV 2472.]

InChI:InChI=1/C13H10O2/c14-13(15)12-9-5-4-8-11(12)10-6-2-1-3-7-10/h1-9H,(H,14,15)/p-1

Upstream product

• 86-73-7 9H-fluorene 
• 486-25-9 9-fluorenone 
• 115-86-6 phosphoric acid triphenyl ester 
• 54-21-7 sodium salicylate 
• 84-15-1 o-terphenyl 
• 1066-30-4 chromium(lll) acetate 
• 13234-79-2 2-phenylbenzamide 
• 90128-01-1 2-chloro-7-phenyltropone 
• 91805-57-1 2-bromo-7-phenyl-cycloheptatrienone 
• 15719-64-9 methylammonium carbonate 
• 84-11-7 9,10-phenanthrenequinone 
• 100-41-4 ethylbenzene 
• 94-36-0 dibenzoyl peroxide 
• 74-90-8 hydrogen cyanide 

Downstream Products

• 13234-80-5 N-phenyl-[1,1′-biphenyl]-2-carboxamide 
• 16605-99-5 biphenyl-2-carboxylic acid methyl ester 
• 19926-49-9 2-phenylbenzoic acid ethyl ester 
• 2005-10-9 6H-benzo[c]chromen-6-one 
• 1015-89-0 phenanthridin-6-ol 
• 486-25-9 9-fluorenone 
• 18211-41-1 4'-nitro-[1,1'-biphenyl]-2-carboxylic acid 
• 13234-79-2 2-phenylbenzamide 
• 14002-52-9 o-phenylbenzoyl chloride 
• 97023-48-8 2-cyclohexylbenzoic acid 
• 114160-21-3 bicyclohexyl-2-carboxylic acid 
• 304-43-8 6β-(biphenyl-2-carbonylamino)-penicillanic acid 
• 57357-25-2 benzene 
• 2928-43-0 2-biphenylmethanol 

Relevant academic research and scientific papers

Mechanochemical-Cascaded C-N Cross-Coupling and Halogenation Using N-Bromo- And N-Chlorosuccinimide as Bifunctional Reagents

Exploration of alternative energy sources for chemical transformations has gained significant interest from chemists, and mechanochemistry is one of those sources. Herein, we report the use of N-bromosuccinimides (NBS) and N-chlorosuccinimides (NCS) as bifunctional reagents for a cascaded C-N bond formation and subsequent halogenation reactions. Under the solvent-free mechanochemical (ball-milling) conditions, the synthesis of a wide range of phenanthridinone derivatives from N-methoxy-[1,1′-biphenyl]-2-carboxamides is accomplished. During the reactions, NBS and NCS first assisted the oxidative C-N coupling reaction and subsequently promoted a halogenation reaction. Thus, the role of NBS and NCS was established to be bifunctional. Overall, a mild, solvent-free, convenient, one-pot, and direct synthesis of various bromo- and chloro-substituted phenanthridinone derivatives was achieved.

Assemblies of 1,4-Bis(diarylamino)naphthalenes and Aromatic Amphiphiles: Highly Reducing Photoredox Catalysis in Water

Host-guest assemblies of a designed 1,4-bis(diarylamino)naphthalene and V-shaped aromatic amphiphiles consisting of two pentamethylbenzene moieties bridged by an m -phenylene unit bearing two hydrophilic side chains emerged as highly reducing photoredox catalysis systems in water. An efficient demethoxylative hydrogen transfer of Weinreb amides has been developed. The present supramolecular strategy permits facile tuning of visible-light photoredox catalysis in water.

Oxidation of Primary Alcohols and Aldehydes to Carboxylic Acids via Hydrogen Atom Transfer

The oxidation of primary alcohols and aldehydes to the corresponding carboxylic acids is a fundamental reaction in organic synthesis. In this paper, we report a new chemoselective process for the oxidation of primary alcohols and aldehydes. This metal-free reaction features a new oxidant, an easy to handle procedure, high isolated yields, and good to excellent functional group tolerance even in the presence of vulnerable secondary alcohols and tert-butanesulfinamides.

Silica-coated magnetic nanoparticles functionalized cobalt complex: a recyclable and efficient catalyst for the C?C bond formation

In this study, the Co-based catalyst was prepared by cobalt immobilization on the surface of functionalized silica-coated magnetic NPs (Fe3O4@SiO2-CT-Co) as a magnetically core–shell nanocatalyst and characterized by FT-IR, TGA, XRD, VSM, SEM, TEM, EDX, EDX mapping, and ICP techniques and appraised in the Suzuki–Miyaura cross-coupling reaction under mild reaction conditions. The results displayed the superparamagnetic behavior of the Fe3O4 NPs core encapsulated by SiO2 shell, and the size of the particles was estimated about 30?nm. Compared with the previously reported catalysts, the engineered Fe3O4@SiO2-CT-Co catalyst provided perfect catalytic performance for the Suzuki–Miyaura cross-coupling reaction in water as a green solvent and it was much cheaper in the comparison with the traditional Pd-based catalysts. Importantly, the durability of magnetic nanocatalyst was studied and observed that it is stable under the reaction conditions and could be easily reused for at least six successive cycles without any significant decrease in its catalytic activity. Graphic abstract: [Figure not available: see fulltext.]

Microflowers formed by complexation-driven self-assembly between palladium(ii) and bis-theophyllines: Immortal catalyst for C-C cross-coupling reactions

The Pd catalyst for Suzuki-Miyaura or the other C-C coupling reactions is one of the central tools in organic synthesis related to medicine, agricultural chemicals and advanced materials. However, recycling palladium is a bottleneck for developing the extreme potential of Pd in chemistry. Herein, we established a new heterogeneous Pd catalytic system in which the catalyst is a nanopetal-gathered flower-like microsphere self-assembled from PdCl2 and alkyl-linked bis-theophyllines. The microflowers catalyzed quantitatively the reaction of aryl bromides and phenylboronic acid in aqueous media at room temperature. It was found that the reaction proceeds better in an air atmosphere than in nitrogen gas even though the Pd(ii) species employed was lowered to 0.001 mol% in the substance. Very interestingly, the microflowers could be recycled 20 times without deactivation in the C-C coupling reaction between bromobenzene and phenylboronic acid in the presence of sodium chloride. We found that the sodium chloride added played an important role in maintaining the morphology of microflowers and preventing the formation of metallic Pd particles.

Magnetization of graphene oxide nanosheets using nickel magnetic nanoparticles as a novel support for the fabrication of copper as a practical, selective, and reusable nanocatalyst in C-C and C-O coupling reactions

Catalyst species are an important class of materials in chemistry, industry, medicine, and biotechnology. Moreover, waste recycling is an important process in green chemistry and is economically efficient. Herein, magnetic graphene oxide was synthesized using nickel magnetic nanoparticles and further applied as a novel support for the fabrication of a copper catalyst. The catalytic activity of supported copper on magnetic graphene oxide (Cu-ninhydrin@GO-Ni MNPs) was investigated as a selective, practical, and reusable nanocatalyst in the synthesis of diaryl ethers and biphenyls. Some of the obtained products were identified by NMR spectroscopy. This nanocatalyst has been characterized by atomic absorption spectroscopy (AAS), scanning electron microscopy (SEM), wavelength dispersive X-ray spectroscopy (WDX), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometer (VSM) techniques. The results obtained from SEM shown that this catalyst has a nanosheet structure. Also, XRD and FT-IR analysis show that the structure of graphene oxide and nickel magnetic nanoparticles is stable during the modification of the nanoparticles and synthesis of the catalyst. The VSM curve of the catalyst shows that this catalyst can be recovered using an external magnet; therefore, it can be reused several times without a significant loss of its catalytic efficiency. The heterogeneity and stability of this nanocatalyst during organic reactions was confirmed by the hot filtration test and AAS technique.

Preparation method of acrylamido

The present invention relates to a method for preparing a pyrimidine, 9-fluorenone as raw material, by open loop, acid chloride, amidation, chlorination, Hofmann (Hofmann) rearrangement degradation to give 2-(4'-chlorophenyl) aniline, and then condensed with 2-chloronicotinamide to give the product acetoimide, the present invention also relates accordingly to the intermediates 4'-chloro-2-bibenzamide and 4'-chloro-2-aminobiphenyl preparation method. The method of the present invention can obtain the target product with high yield, high purity, and can reduce costs while reducing environmental harm.

Palladium Supported on Silk Fibroin for Suzuki–Miyaura Cross-Coupling Reactions

Silk fibroin supported Pd (Pd/SF) has been prepared and used as catalyst in Suzuki–Miyaura cross-coupling reactions in water/ethanol (4:1 v/v) mixture. The reactions proceed rapidly with aryl iodides and boronic acids with different electronic properties using low metal loading (0.38 mol-%). Pd/SF exhibits better recyclability compared to other biopolymer-supported Pd catalysts, up to nineteen cycles without loss of activity.

Synthesis of seven-membered lactones by regioselective and stereoselective iodolactonization of electron-deficient olefins

A regio- A nd stereoselective iodolactonization of internal electron-deficient olefinic acids has been reported, which provides a straightforward access to a series of multi-functionalized seven-membered lactones containing two consecutive chiral centers. The ester substituents on the olefins played a key role in achieving high regioselectivity. This result was proved through experiments and DFT calculations.

Visible-Light-Induced Arene C(sp 2)-H Lactonization Promoted by DDQ and tert -Butyl Nitrite

A visible-light photocatalytic aerobic oxidative lactonization of arene C(sp 2)-H bonds proceeds in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and tert -butyl nitrite (TBN). Under the optimized conditions, a range of 2-arylbenzoic acids is converted into the corresponding benzocoumarin derivatives in moderate to excellent yields. This method is characterized by its atom economy, mild reaction conditions, the use of a green oxidant and metal-free catalysis.