Tag: M.W:100-200

Demirayak, Seref; Tuncel, Muzaffer; Ogretir, Cemil published an article about the compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3,SMILESS:SC1=NC2=CC(C)=CC=C2N1 ).Electric Literature of C8H8N2S. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:27231-36-3) through the article.

The reaction kinetics of some 5(6)-substituted benzimidazole-2-thiones with chloroacetic acid forming thioethers in basic media were studied to elucidate the effect of substituents on 5(6)-positions. To achieve this, the substituent effects on thiolactam-thiolactim equilibrium were determined by measuring the acidity constants (i.e. pKa values) of the compounds Following that, the carboxymethylation rates were measured at elevated temperature and pH values. Excluding the nitro group, the expected substituent effects were observed

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

SDS of cas: 6797-13-3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2-Ethylbenzo[d]oxazole, is researched, Molecular C9H9NO, CAS is 6797-13-3, about Reaction of ynamines with bifunctional reagents. Author is Sokolova, E. A.; Maretina, I. A.; Petrov, A. A..

Dioxoles, imidazoles, oxazoles and thiazoles (I ,II, III, X = O, NH, S; R = Et, Ph) were prepared in 45-83% yields by the title reaction. Thus, cyclization of Et2NCCMe with o-(HO)2C6H4 in C6H6 in the presence of H2SO4 gave 52% benzodioxole I (X = O, R = Et). The reaction of EtRNCCMe with HXCH2CH2XH gave MeCH:C(NEtR)XCH2CH2XH.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Tetrahedron Letters called Imidazobenzothiazine and primidobenzothiazine derivatives synthesis via an aliphatic SN2 substitution/Cu(I) catalyzed Ullmann coupling cascade process, Author is Wang, Ruihong; Qian, Weixing; Bao, Weiliang, which mentions a compound: 27231-36-3, SMILESS is SC1=NC2=CC(C)=CC=C2N1, Molecular C8H8N2S, COA of Formula: C8H8N2S.

An efficient method for the preparation of various imidazobenzothiazine and primidobenzothiazine derivatives from readily available 2-mercaptoimidazoles (thiouracils) and bromobenzyl bromides via a copper(I)-catalyzed one-pot cascade process has been developed. The reaction involves a SN2 process and an intramol. C-N cross coupling cyclization.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Smith, Peter A. S.; Chou, Shang-Shing Peter researched the compound: 2-Ethylbenzo[d]oxazole( cas:6797-13-3 ).Recommanded Product: 2-Ethylbenzo[d]oxazole.They published the article 《Cyclization of phenyl azides with homoallylic or allylic ortho substituents and the consequences of triazoline fragmentation》 about this compound( cas:6797-13-3 ) in Journal of Organic Chemistry. Keywords: azide phenyl cyclization; allyloxyphenyl azide cyclization; thermolysis phenyl azide. We’ll tell you more about this compound (cas:6797-13-3).

Thermolysis at 110-20°of o-allyloxyphenyl azide and 14 derivatives substituted on the allyl group gave benzoxazines, dihydroazirinobenzoxazines, or 3-alkenylbenzomorpholines through fragmentation of intermediate triazolines. With substituted allyl groups, the geometrical isomers gave the same products in the same ratio, except in the case of o-(β,γ-dimethylallyl)phenyl azide. Rearrangement by Ph migrations occurred with the β-phenylallyl compound o-Allylphenyl azide, (o-azidophenyl)acetaldehyde, and o-[(cis-1-propenyl)oxy]phenyl azide required of 155-200° for thermolysis and yielded 2-methylindole, oxindole, and 2-ethylbenzoxazole, resp., by nitrene insertion.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

COA of Formula: C7H8O2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-(Furan-2-yl)propan-1-one, is researched, Molecular C7H8O2, CAS is 3194-15-8, about Preparation of thienyl and furyl-1,2,3-selenadiazoles. Author is Wang, Jianhua; Ku, Erban; Shi, Zhen; Wang, Xiaogang.

Four new thienyl and furyl-1,2,3-selenadiazole derivatives I (X = O, S; R = H, Me) were prepared in this paper. This reasonable mechanism was given for the ring-closure of substituted semicarbazones to the corresponding 1,2,3-selenadiazoles.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

COA of Formula: C7H8O2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-(Furan-2-yl)propan-1-one, is researched, Molecular C7H8O2, CAS is 3194-15-8, about Influencing the organoleptic stability of beer by variation of the technological parameters. Author is Narziss, L.; Back, W.; Miedaner, H.; Lustig, S..

Pilot and full scale trials were carried out organoleptically and by gas chromatog. on technol. influences on flavor stability of beer. A well-controlled protein solubilization of the malt (<41%) and kilning temperatures <85 0 were favorable. The same refers to mashing with low air content, low pH (5.2) and high mashing-in temperatures (620). Wort treatment should combine reduced thermal reactions and a low residual coarse sludge content. Fermentation at <120, as well as a controlled aeration at pitching, were favorable, while pure oxygen caused flavor-instable beers. At filtration and bottling, even a minimal oxygen pick-up, as well as and extensive heating, can diminish the efforts during the earlier stages. Although many compounds look similar to this compound(3194-15-8)COA of Formula: C7H8O2, numerous studies have shown that this compound(SMILES:O=C(C1=CC=CO1)CC), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 3194-15-8, is researched, Molecular C7H8O2, about Flavor stability of alternative malt-based beverages, the main research direction is malt based beverage flavor.Electric Literature of C7H8O2.

In recent years the market share for alternative malt-based beverages has grown as consumers look for alternative, new, and refreshing products. To date, however, no information has been gathered about the flavor stability of such beverages. In this work, stale flavor compounds in com. and pilot-scale malt-based beverages were analyzed and compared with appropriate sensory results. The study showed that the aging of flavored malt-based beverages can be described by changes in the contents of 3-methylbutanal, 2-furfural, benzaldehyde, phenylacetaldehyde, hexadienal, heptanal, methional, and β-damascenone, with an index increase from 4.097 μmol/L in fresh samples to 4.899 μmol/L in aged samples. The aging indicator value determined for novel malt-based beverages was confirmed in pilot-scale lactic acid-fermented beverages. In unfermented malt beers, the aging process can be described by the sum of the Strecker aldehydes 2- and 3-methylbutanal and phenylacetaldehyde and the thermal indicator methylfurfural. During simulated aging, an increase of 181 nmol/L was observed

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Synthesis of ketones in the furan series》. Authors are Gol’dfarb, Ya. L.; Smorgonskii, L. M..The article about the compound:1-(Furan-2-yl)propan-1-onecas:3194-15-8,SMILESS:O=C(C1=CC=CO1)CC).Quality Control of 1-(Furan-2-yl)propan-1-one. Through the article, more information about this compound (cas:3194-15-8) is conveyed.

cf. C. A. 25, 2719. In the preparation of aryl and alkyl 2-furyl ketones from furan and acid chlorides with SnCl4 in C6H6 (cf. Reichstein, C. A. 24, 3781), the yields can be increased from about 15 to 45% by working in a large excess of solvent and the reversed addition of SnCl4 to the mixture of furan and acid chloride. In this way, the exothermic reaction of acid chloride with 2-furylstannic chloride and its polymerization products with the resulting excessive formation of decomposition products can be avoided. If an acid anhydride instead of chloride is used, the yields of ketones are increased up to 70%. To a mixture of 1 mol. of acid chloride or anhydride and furan in 175-500 ml. of dry C6H6 is added dropwise, with cooling, 1 mol. SnCl4 in C6H6, and the mixture is shaken for 30 min. and allowed to stand at room temperature 12-18 hrs. After decomposition with iced water, the reaction mixture is steam-distilled, the distillate and the black residue are extracted with Et2O, the extract is washed with 10% NaOH and water and, after drying with Na2SO4 and expelling the Et2O, the residue is fractionated. Me 2-furyl ketone, m. 29°, b. 174-5°, prepared from Ac2O in 64% yield; Et, b16 74-5°, 51% from (EtCO)2O; Pr, b14 88°, 70% from (PrCO)2O; Ph, b10 146-7°, 49% from Bz2O. Satisfactory results can be obtained by the use of AlCl3 instead of SnCl4.

Although many compounds look similar to this compound(3194-15-8)Quality Control of 1-(Furan-2-yl)propan-1-one, numerous studies have shown that this compound(SMILES:O=C(C1=CC=CO1)CC), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Recommanded Product: 2-Mercapto-5-methylbenzimidazole. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about n-type organic thin-film transistors with self-assembled monolayers. Author is Kim, Seong Hyun; Lee, Jung Hun; Yang, Yong Suk; Lee, Jeong-Ik; Zyung, Taehyoung.

Contact properties between the organic semiconductor and the metal source- and drain-contact are one of the most important issues since the charge carrier injection through the contact has serious effects on the device performance. Au surfaces of the source- and drain-electrodes are modified by self-assembled monolayers (SAM) using thiol derivatives The charge carrier mobility using n-type organic semiconductor was increased from 4.3 × 10-4 to 4.8 × 10-3 cm2/Vs after modification of the source- and drain-electrodes. Better contact properties between the metal electrodes and organic semiconductors could improve the device performance.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Recommanded Product: 2-Ethylbenzo[d]oxazole. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2-Ethylbenzo[d]oxazole, is researched, Molecular C9H9NO, CAS is 6797-13-3, about Inhibitors of hepatic mixed function oxidases. V. Inhibition of aminopyrine N-demethylation and enhancement of aniline hydroxylation by benzoxazole derivatives. Author is Little, Peter J.; Ryan, Adrian J..

All of a series of 12 benzoxazoles tested inhibited aminopyrine N-demethylase (I) activity of rat liver microsomes from phenobarbitone-treated rats, and there was an apparent relation between inhibitory potency and partition coefficient For the 2-alkylbenzoxazole series, inhibitory potency towards I activity increased as the number of C atoms in the alkyl side chain increased. Substitution of a Me group into the 2 or 5 position of the benzoxazole nucleus produced a 2- to 3-fold increase in inhibitory potential for each instance. Eleven of the benzoxazoles enhanced aniline p-hydroxylase activity in rat liver microsomes, whereas one, zoxazolamine, was inhibitory; no relation was apparent between physicochem. properties and degree of enhancement of aniline p-hydroxylase activity.

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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem