Category: 205-39-0

Nickel-catalyzed intramolecular C-H arylation using aryl pivalates as electrophiles was written by Wang, Jiayi;Ferguson, Devin M.;Kalyani, Dipannita. And the article was included in Tetrahedron in 2013.Safety of Naphtho[2,1-b]benzofuran This article mentions the following:

This paper describes a method for nickel catalyzed intramol. C-H arylation using aryl pivalates as electrophiles. The transformation is efficient for the synthesis of diverse electronically and sterically differentiated dibenzofurans. Addnl., the method could be expanded toward the synthesis of carbazoles. Preliminary mechanistic studies of the transformation are also described. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Safety of Naphtho[2,1-b]benzofuran).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Benzofurans are stable towards alkali and readily polymerize on treatment with sulfuric acid, due to which they are useful for the preparation of low cost chemically relatively inert resins.Safety of Naphtho[2,1-b]benzofuran

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Application of random forests method to predict the retention indices of some polycyclic aromatic hydrocarbons was written by Goudarzi, N.;Shahsavani, D.;Emadi-Gandaghi, F.;Chamjangali, M. Arab. And the article was included in Journal of Chromatography A in 2014.Electric Literature of C16H10O This article mentions the following:

A quant. structure-retention relation (QSRR) study was carried out based on the new method of random forests (RF) for prediction of the retention indexes (RIs) of some polycyclic aromatic hydrocarbon (PAH) compounds The RIs of these compounds were calculated using the theor. descriptors generated from their mol. structures. Effects of the important parameters affecting the ability of the RF prediction power such as the number of trees (n_t) and the number of randomly selected variables to split each node (m) were studied. Optimization of these parameters showed that in the point m = 70, n_t = 460, the RF method can give the best results. Also, performance of the RF model was compared with that of the artificial neural network (ANN) and multiple linear regression (MLR) techniques. The results obtained show the relative superiority of the RF method over the MLR and ANN ones. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Electric Literature of C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Electric Literature of C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Photostimulated reactions of o-dihalobenzenes with nucleophiles derived from the 2-naphthyl system. Competition between electron transfer, fragmentation, and ring closure reactions was written by Baumgartner, Maria T.;Pierini, Adriana B.;Rossi, Roberto A.. And the article was included in Journal of Organic Chemistry in 1993.Synthetic Route of C16H10O This article mentions the following:

The photostimulated reaction of o-XC₆H₄Y (I; X = I, Br, Cl, Y = I; X = Cl, Y = Br) with 2-naphthoxide (II, Z = O) gave 1-(o-halophenyl)-2-naphthol (III; halo = I, Br, Cl) and ring-closure product IV (Z = O), III being an intermediate in the formation of IV (Z = O). The products obtained in the photostimulated reaction of II (Z = S) with I depended on the halogens. When both nucleofugal groups were iodine, only IV (Z = S) was obtained. With o-bromoiodobenzene, the photostimulated reaction gave IV (Z = S) and the substitution product on sulfur with retention of bromine, while with o-chloroiodobenzene the only observed product was the substitution product on sulfur with retention of chlorine. The photostimulated reaction of I with II (Z = Se) gave the same amount of cyclized product IV (Z = Se) and the substitution product on selenium without retention of halogen, although in an overall low yield. All these reactions may occur by the S_RN1 mechanism. Theor. studies supported the different behavior found with the nucleophiles derived from the 2-naphthyl system. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Synthetic Route of C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofuran is the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Synthetic Route of C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Organic air pollutants in an aluminum reduction plant was written by Thrane, K. E.;Stray, H.. And the article was included in Science of the Total Environment in 1986.Product Details of 205-39-0 This article mentions the following:

The content of organic pollutants, other than polycyclic aromatic hydrocarbons, was determined in air samples collected in the pot room of the Soederberg Al reduction plant. The neutral and the basic fractions of the sample extract were analyzed, and azaarenes, carbazoles, 1-nitropyrene  [5522-43-0], and quinones as well as aromatic aldehydes and ketones were identified by gas chromatog. and mass spectrometry. Selected compounds were quantified, and the results indicate that the concentrations in the pot room air are high. Some of the identified compounds are known to have adverse health effects and should therefore be included whenever air quality studies are carried out inside or near Al plants. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Product Details of 205-39-0).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Product Details of 205-39-0

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Structural characterization of tar from a coal gasification plant: comparison with a coke oven tar and a crude oil flash-column residue was written by Pindoria, Ramesh V.;Megaritis, Athanasios;Chatzakis, Ioannis N.;Vasanthakumar, Louis S.;Zhang, Sheng-Fu;Lazaro, Maria-Jesus;Herod, Alan A.;Garcia, Ximena A.;Gordon, Alfredo L.;Kandiyoti, Rafael. And the article was included in Fuel in 1997.Formula: C16H10O This article mentions the following:

Residual tar from a coal gasification plant was characterized using a wide array of anal. techniques. Structural comparisons were made with a coke-oven tar and a crude petroleum flash distillation residue. The gasification tar residue had a carbon aromaticity >94%, with extensively dealkylated aromatic structures and only small amounts of oxygenates, compared with the 56% carbon aromaticity and significant alkyl substitution in the coke-oven tar. The proportion of material b. >450° as well as the elemental carbon and fixed carbon’ contents of the gasification tar residue were also higher than those of the other samples. As expected, the petroleum flash distillation residue were also higher than those of the other samples. Also as expected, the petroleum flash distillation residue was mainly aliphatic (f_a = 0.12), with small aromatic ring systems attached to long alkyl chains. For all three samples, MALDI mass spectra showed a signal at mol. masses >20,000, with the gasification tar residue showing the narrowest range of mol. masses. Taken together, structural differences between the gasification tar and coke-oven tar reflected the more severe thermal treatment and chem. history of the gasification tar, leading to the survival of low amounts (∼1 weight% of coal feed) of an apparently, chem. very stable residue. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Formula: C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives.Benzofuran is one of the most significant oxygen-containing heterocycles consisting of fused benzene and furan ring, which are widely presented in various naturally occurring and synthetically active compounds. Benzofurans are stable towards alkali and readily polymerize on treatment with sulfuric acid, due to which they are useful for the preparation of low cost chemically relatively inert resins.Formula: C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Effects of weathering on organic matter was written by Marynowski, Leszek;Szeleg, Eligiusz;Jedrysek, Mariusz O.;Simoneit, Bernd R. T.. And the article was included in Organic Geochemistry in 2011.COA of Formula: C16H10O This article mentions the following:

Bulk geochem., petrog., mineralogical and mol. compositions of unweathered, weathered and transitional zones of a Middle Jurassic fossil wood were analyzed to trace changes caused by oxidative weathering of the immature terrestrial organic matter (OM). The occurrence of such zones was confirmed by the mineral composition, showing replacement of siderite and pyrite by goethite. Vitrinite reflectance anal. of weathered and unweathered fossil wood samples revealed that weathering elevated the vitrinite reflectance values by ca. 0.1%, which should be taken into account during modeling of low maturity terrestrial OM. In the weathered part of the wood, most of the biomarkers and biomols. were totally removed or the concentration decreased significantly. The concentration of most of the polynuclear aromatic hydrocarbons (PAHs) decreased by 50-80%, being >90% for the more reactive and less stable benzo[a]pyrene and perylene. On the other hand, several aromatic compounds, like phenanthrene and its Me derivatives, Ph naphthalenes, fluoranthene and oxygen-containing aromatic compounds increased in concentration in the weathered zone. This results from processes such as formation of Ph derivatives of PAHs and their cyclization, as well as aromatization of diterpenoids and incorporation of oxygen into aromatic structures. Weathering should always be considered in studies of fossilized terrestrial OM, especially in the case of thermal maturation modeling, because it significantly decreases the OM content and total sulfur content, changes vitrinite reflectance values and alters the extract composition as a result of organic compound degradation In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0COA of Formula: C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.COA of Formula: C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Identification of potentially toxic compounds in complex extracts of environmental samples using gas chromatography-mass spectrometry and multivariate data analysis was written by Bergknut, Magnus;Kucera, Adam;Frech, Kristina;Andersson, Erika;Engwall, Magnus;Rannug, Ulf;Koci, Vladimir;Andersson, Patrik L.;Haglund, Peter;Tysklind, Mats. And the article was included in Environmental Toxicology and Chemistry in 2007.Computed Properties of C16H10O This article mentions the following:

In this study, the authors examined 31 samples of varying chem. composition, including samples of soils from gasworks, coke production sites, and sites where wood preservatives were heavily used; ash and soot from municipal solid waste incinerators; antiskid sand; and dust from areas with heavy road traffic. The samples were comprehensively chem. characterized, especially their polycyclic aromatic compound contents, using gas chromatog.-time-of-flight mass spectrometry, whereas their biol. effects were assessed using dehydrogenase activity, root growth (Hordeum vulgare), reproduction of springtails (Folsomia candida), algal growth (Desmodesmus subspicatus), germinability (Sinapis alba), Vibrio fischeri, DR-CALUX, and Ames Salmonella assays. The number of compounds detected in the samples ranged from 123 to 527. Using the multivariate regression technique of partial-least-squares projections to latent structures, it was possible to find individual compounds that exhibited strong correlations with the different biol. responses. Some of the results, however, indicate that a broader chem. characterization may be needed to identify all the compounds that may cause the measured biol. responses. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Computed Properties of C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Computed Properties of C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

One pot synthesis of diarylfurans from aryl esters and PhI(OAc)₂via palladium-associated iodonium ylides was written by Bao, Yong-Sheng;Bao, Agula;Bao, Zhaorigetu;Jia, Meilin;Baiyin, Menghe. And the article was included in Organic & Biomolecular Chemistry in 2015.Application of 205-39-0 This article mentions the following:

The example of palladium-catalyzed intermol. cyclization for the synthesis of various diarylfurans in which one of the aromatic rings originates from the phenolic part of the starting ester and the other one from PhI(OAc)₂ has been reported. The reaction is carried out through two steps: the rearrangement of palladium-associated iodonium ylides to form o-iodo diaryl ether and then palladium catalyzed intramol. direct arylation. This reaction can tolerate a variety of functional groups and is alternative or complementary to the previous methods for the synthesis of diarylfurans. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Application of 205-39-0).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Application of 205-39-0

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Palladium-Catalyzed Intramolecular C-H Arylation of Arenes Using Tosylates and Mesylates as Electrophiles was written by Nervig, Christine S.;Waller, Peter J.;Kalyani, Dipannita. And the article was included in Organic Letters in 2012.Application In Synthesis of Naphtho[2,1-b]benzofuran This article mentions the following:

This paper describes a method for the palladium catalyzed intramol. C-H arylation using tosylates and mesylates as electrophiles. E.g., in presence of Pd(OAc)₂, 1,2-bis(dicyclohexylphosphino)ethane, Cs₂CO₃, and CsOPiv, C-H arylation of tosylate I gave 88% fused furan (II). The transformation is efficient for the synthesis of various heterocyclic motifs including furans, carbazoles, indoles, and lactams. Addnl., a protocol for the one-pot sequential tosylation/arylation of phenol derivatives is presented. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0Application In Synthesis of Naphtho[2,1-b]benzofuran).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.Application In Synthesis of Naphtho[2,1-b]benzofuran

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem

Characterisation of black carbon materials by pyrolysis-gas chromatography-mass spectrometry was written by Song, Jianzhong;Peng, Ping’an. And the article was included in Journal of Analytical and Applied Pyrolysis in 2010.COA of Formula: C16H10O This article mentions the following:

Pyrolysis-gas chromatog.-mass spectrometry (Py-GC-MS) was used to investigate the chem. structures of eight black carbon (BC) materials: hexane soot, gasoline soot, diesel soot, coal soot, grass soot, wood soot, grass charcoal and wood charcoal. Py-GC-MS data revealed that the pyrolytic products of the eight BC samples were all dominated in aromatic compounds, followed by smaller amounts of aliphatic compounds O-containing pyrolytic products were also present in all eight BC samples. The data suggest that the structures of eight BCs were composed of highly aromatic structures that were cross-linked by aliphatic chain-like bridges and/or O-containing polar functional groups. Owing to the different fuel precursors and combustion conditions, the eight BC materials also differed in many respects. The pyrolytic products from soot BCs contained higher amounts of N-containing compounds, reflecting the combustion conditions. S-containing compounds were only present in pyrolytic products from three fossil-fuel soots, and can be used as a marker for soot from fossil fuels. Charcoal BCs can retain some plant structure, containing significant amounts of typical lignin-derived phenolic compounds The results may be useful for interpretation of Py-GC-MS data for complicated BCs isolated from soils, sediments and aerosols. In the experiment, the researchers used many compounds, for example, Naphtho[2,1-b]benzofuran (cas: 205-39-0COA of Formula: C16H10O).

Naphtho[2,1-b]benzofuran (cas: 205-39-0) belongs to benzofurans derivatives. Benzofurans are only weakly aromatic in nature and they are cleaved by many oxidative and reductive conditions. Substituted benzofurans find applications such as fluorescent sensors, oxidants, in drug discovery, and in another field of chemistry and agriculture.COA of Formula: C16H10O

Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem