Tag: M.W:100-200

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Hunsdiecker reaction of silver salts of cis- and trans-1,2-cyclohexanedicarboxylic acid》. Authors are Abell, Paul I..The article about the compound:cis-Cyclohexane-1,2-dicarboxylic acidcas:610-09-3,SMILESS:O=C([C@H]1[C@@H](C(O)=O)CCCC1)O).Application of 610-09-3. Through the article, more information about this compound (cas:610-09-3) is conveyed.

Decarboxylation of the Ag salts of cis- and trans-1,2-cyclohexanedicarboxylic acids (I, Ia) by the action of halogen according to Hunsdiecker, et al. (C.A. 38, 374), gave only trans-1,2-dibromocyclohexane (IIa) through isomerization which appeared to take place at an intermediate stage in the reaction. Com. cis-1,2-cyclohexanedicarboxylic anhydride hydrolyzed in boiling H2O gave I, m. 191-4°, isomerized by heating 8 hrs. at 170-80° with a small amount of dilute HCl in a sealed tube to yield 61.5% Ia, m. 228.5-30.5° (from EtOH). Carefully neutralized solutions of the Na salts of I and Ia treated with an exactly equivalent quantity of aqueous AgNO3 and filtered, the precipitate carefully washed with H2O, alc., and Et2O, dried several days over P2O5 in vacuo, and screened to 100 mesh gave Ag salts (III, IIIa) suitable for reaction with Br. Reaction of III and IIIa with Br was carried out at various temperatures by the inverse addition procedure of Conly (C.A. 48, 2561b) in which the dry III or IIIa was added to Br in CCl4, in an apparatus in which the speed and extent of the reaction were followed by observation of the CO2 evolved. The products of the reaction were tabulated (Ag salt, temperature of reaction, % yield, m.p. IIa, n25D, and structure as shown by infrared spectrum given): III, 0-25°, 43, -4.8°, 1.5503, all trans; III, reflux, 47, -4.7°, 1.5505, all trans; IIIa, 0-25°, 48, -4.5°, 1.5507, all trans; IIIa, reflux, 37, -2.5°, 1.5510, all trans. To establish the stability to isomerization under the above exptl. conditions, known cis-1,2-dibromocyclohexane (II) and IIa were refluxed 12 hrs. with Br and AgBr. II, m. 10.0°, n25D 1.5512, was recovered with a 60% yield of material, m. 6.5°, n25D 1.5511, all cis; and IIa, m. -4.5°, n25D 1.5505, similarly yielded 94% material, m. -4.5°, n25D 1.5505, all trans. Although the data did not distinguish partial isomerization from complete retention of configuration a very large proportion of II survived the reaction. No isomerization of II took place on 12 hrs. refluxing with Br and AgBr in anhydrous CCl4. The mechanistic implications were discussed briefly.

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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Application In Synthesis of cis-Cyclohexane-1,2-dicarboxylic acid. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Organic ligand binding by a hydrophobic cavity in a designed tetrameric coiled-coil protein. Author is Mizuno, Toshihisa; Hasegawa, Chinatsu; Tanabe, Yoichi; Hamajima, Kenta; Muto, Takashi; Nishi, Yoshinori; Oda, Masayuki; Kobayashi, Yuji; Tanaka, Toshiki.

The design and characterization of a hydrophobic cavity in de novo designed proteins provides a wide range of information about the functions of de novo proteins. We designed a de novo tetrameric coiled-coil protein with a hydrophobic pocketlike cavity. Tetrameric coiled coils with hydrophobic cavities have previously been reported. By replacing one Leu residue at the a position with Ala, hydrophobic cavities that did not flatten out due to loose peptide chains were reliably created. To perform a detailed examination of the ligand-binding characteristics of the cavities, we originally designed two other coiled-coil proteins: AM2, with eight Ala substitutions at the adjacent a and d positions at the center of a bundled structure, and AM2W, with one Trp and seven Ala substitutions at the same positions. To increase the association of the helical peptides, each helical peptide was connected with flexible linkers, which resulted in a single peptide chain. These proteins exhibited CD spectra corresponding to superhelical structures, despite weakened hydrophobic packing. AM2W exhibited binding affinity for size-complementary organic compounds The dissociation constants, Kd, of AM2W were 220 nM for adamantane, 81 μM for 1-adamantanol, and 294 μM for 1-adamantane acetic acid, as measured by fluorescence titration analyses. Although it was contrary to expectations, AM2 did not exhibit any binding affinity, probably due to structural defects around the designed hydrophobic cavity. Interestingly, AM2W exhibited incremental structure stability through ligand binding. Plugging of structural defects with organic ligands would be expected to facilitate protein folding.

In addition to the literature in the link below, there is a lot of literature about this compound(cis-Cyclohexane-1,2-dicarboxylic acid)Application In Synthesis of cis-Cyclohexane-1,2-dicarboxylic acid, illustrating the importance and wide applicability of this compound(610-09-3).

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

COA of Formula: C5H6N2O2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about Synthesis, biological profile and computational studies of some trichloropyrimidine derivatives. Author is Sandeep, Thummar; Vasishta, Bhatt.

A series of (((oxadiazolyl-thio)(nitrophenyl-amino)pyrimidinyl)hydrazinyl)-N-phenylacetamide motifs I [R = Ph, 2-furyl, 3-pyridyl, etc.] was synthesized and studied for their antibacterial and antifungal activities as well as for mol. docking and FMO studies. All the synthesized mols. were characterized by 1H NMR and 13C NMR spectroscopic anal. Compounds I [R = 3-pyridyl, 4-pyridyl] were found to be potentially active against gram neg. and gram-pos. bacteria with MIC value between 62.5 to 500μg/mL. The mol. docking studies of compounds I [R = Ph, 3-pyridyl] were further carried out to discover the interaction with active sites.

In addition to the literature in the link below, there is a lot of literature about this compound(2-Furoic hydrazide)COA of Formula: C5H6N2O2, illustrating the importance and wide applicability of this compound(3326-71-4).

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Silica sol assisted chromatographic NMR spectroscopy for resolution of trans- and cis-isomers》. Authors are Yang, Ying; Wu, Rui; Huang, Shaohua; Bai, Zhengwu.The article about the compound:cis-Cyclohexane-1,2-dicarboxylic acidcas:610-09-3,SMILESS:O=C([C@H]1[C@@H](C(O)=O)CCCC1)O).SDS of cas: 610-09-3. Through the article, more information about this compound (cas:610-09-3) is conveyed.

Chromatog. NMR spectroscopy can seperate the mixtures of species with significantly different mol. size, but generally fails for isomeric species. Herein, we reported the resolution of trans- and cis-isomers and their structural analog, which are different in mol. shapes, but similar in mass, were greatly enhanced in the presence of silica soluble The mixtures of maleic acid, fumaric acid and succinic acid, and the mixtures of trans- and cis-1,2-cyclohexanedicarboxylic acids, were distinguished by virtue of their different degrees of interaction with silica soluble Moreover, we found mixed solvents could improve the spectral resolution of DOSY spectra of mixtures

In addition to the literature in the link below, there is a lot of literature about this compound(cis-Cyclohexane-1,2-dicarboxylic acid)SDS of cas: 610-09-3, illustrating the importance and wide applicability of this compound(610-09-3).

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

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: 610-09-3, is researched, Molecular C8H12O4, about Comparison of aromatic and aliphatic dicarboxylic acid in reactivity using hydrogen-isotope exchange reaction in a gas-solid system, the main research direction is hydrogen exchange carboxylic acid kinetics; LFER hydrogen exchange carboxylic acid.Computed Properties of C8H12O4.

The hydrogen-isotope exchange reaction between aromatic (alicyclic, or normal chain aliphatic) dicarboxylic acid (solid) and HTO vapor was observed at 40 °C ∼ 80° to reveal the reactivity of the material having the same two functional groups. The A””-McKay plot method was used to determine its rate constant From the rate constants thus determined, the following three findings have been clarified in the reaction. (1) The reactivity of aromatic dicarboxylic acid is similar to that of normal chain aliphatic dicarboxylic acid, and is greater than that of alicyclic acid. (2) With regard to 1,2- or 1,4-cyclohexanedicarboxylic acid, cis-isomer is similar to trans-isomer in reactivity. (3) The reactivity of isophthalic acid is larger than that of benzoic acid, and seems to follow the Hammett LFER.

There are many compounds similar to this compound(610-09-3)Computed Properties of C8H12O4. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

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: 3326-71-4, is researched, Molecular C5H6N2O2, about A highly selective aggregation-induced emission fluorogen for sensitive detection of Al3+ in living cells, the main research direction is A549 cell aggregation induced emission fluorogen aluminum; AIE; Al3+; Schiff’s base; coumarin; fluorescence probe.Synthetic Route of C5H6N2O2.

A Schiff’s base derivative was synthesized using a condensation reaction between 8-formyl-7-hydroxy-4-methylcoumarin and furan-2-carbohydrazide that produced marked aggregation-induced emission and had excellent ability to specifically recognize aluminum ions (Al3+). This compound displayed faint fluorescence in the benign solvent DMF, and exhibited obvious green fluorescence following addition of specific amounts of water. Moreover, it exhibited strong blue fluorescence after combination with Al3+ even in the presence of other interfering ions. These exptl. results demonstrated that this derivative could be used as a fluorescence probe for Al3+. The advantages, including significant fluorescence change, high selectivity and sensitivity, and fast response, meant that this probe could be used both to detect Al3+ in water samples and for fluorescence imaging in living cells.

There are many compounds similar to this compound(3326-71-4)Synthetic Route of C5H6N2O2. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Formula: C6H10O3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Donor-Acceptor Complex Enables Alkoxyl Radical Generation for Metal-Free C(sp3)-C(sp3) Cleavage and Allylation/Alkenylation. Author is Zhang, Jing; Li, Yang; Xu, Ruoyu; Chen, Yiyun.

The alkoxyl radical is an essential and prevalent reactive intermediate for chem. and biol. studies. Here we report the first donor-acceptor complex-enabled alkoxyl radical generation under metal-free reaction conditions induced by visible light. Hantzsch ester forms the key donor-acceptor complex with N-alkoxyl derivatives, which is elucidated by a series of spectrometry and mechanistic experiments Selective C(sp3)-C(sp3) bond cleavage and allylation/alkenylation is demonstrated for the first time using this photocatalyst-free approach with linear primary, secondary, and tertiary alkoxyl radicals.

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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Yarmohammadi, Elahe; Beyzaei, Hamid; Aryan, Reza; Moradi, Ashraf published an article about the compound: 2-Furoic hydrazide( cas:3326-71-4,SMILESS:O=C(C1=CC=CO1)NN ).Name: 2-Furoic hydrazide. 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:3326-71-4) through the article.

In this study, a novel process for the synthesis of 5-substituted 1,3,4-oxadiazole-2-thiol derivatives I (R = Ph, 4-pyridinyl, 4-methyl-1,2,3-thiadiazol-5yl, etc.) was proposed via ultrasound-assisted reaction of aryl hydrazides RC(O)NHNH2 with CS2 (1:1 molar ratio) in some drops of DMF in the absence of basic or acidic catalysts. They were produced in good to excellent yields under easy workup and purification conditions. In order to prove the usefulness of the prepared compounds, their antioxidant, antibacterial, and antifungal potentials were screened by DPPH free radical scavenging, serial twofold microdilution and streak plate methods. Acceptable to significant inhibitory activities were observed with synthesized heterocycles. The results showed that compound I (R = 4-fluorophenyl) is a broad-spectrum antimicrobial agent. Many of them displayed remarkable antioxidant properties comparable to standard controls (ascorbic acid and α-tocopherol). Synthesized 1,3,4-oxadiazoles I are also potent candidates to treat cancer, Parkinson, inflammatory, and diabetes diseases.

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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Category: benzisoxazole. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Synthesis and Anticancer Activity of Structure Simplified Naturally Inspired Dimeric Chromenone Derivatives. Author is Ali, Rameez; Guan, Yong; Leveille, Alexandria N.; Vaughn, Elizabeth; Parelkar, Sangram; Thompson, Paul R.; Mattson, Anita E..

Select dimeric chromenones exhibit low micromolar cytotoxicity toward lymphoma and leukemia cell lines, L5178Y and HL60, resp. The bioactive dimeric chromenones were identified from a focused library of structurally simplified derivatives of naturally occurring dimeric chromenones and tetrahydroxanthones that was prepared as part of this study. The simple dimeric chromenone scaffolds contain no stereogenic centers, are easily synthesized, and may be utilized as lead compounds in cancer research and drug discovery.

There are many compounds similar to this compound(37443-42-8)Category: benzisoxazole. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called A simple and sensitive fluorescent sensor platform for Al3+ sensing in aqueous media and monitoring through combined PET and ESIPT mechanisms: practical applications in drinking water and bio-imaging, published in 2020-07-31, which mentions a compound: 3326-71-4, mainly applied to fluorescent sensor aluminum bioimging, Name: 2-Furoic hydrazide.

In this study, a novel hydrazide-based compound, (E)-N′-(5-(benzo[d]thiazol-2-yl)-2-hydroxybenzylidene)furan-2-carbohydrazide (probe BOTH, I) was designed, characterized and prepared as a fluorogenic “”turn-on”” sensor for monitoring Al3+ in near-perfect aqueous media. All emission and absorbance spectral studies were performed in HEPES/DMSO (volume/volume, 99.95/0.05, pH = 7.0) media at 25 °C. The quantum yield of probe BOTH increases considerably in the presence of Al3+. Probe BOTH could sense Al3+ at a concentration as low as 6.47 nM. Probe BOTH could sense Al3+ with high sensitivity and selectivity, and a quant. correlation of R2 = 0.9887 in the Al3+ concentration range of 0.0-20.0 equivalent To evaluate the method parameters, a validation study was performed based on different anal. parameters. The formation of complex BOTH-Al3+ (2 : 1 stoichiometry) was confirmed by 1H-NMR titration and MALDI-TOF MS, as well as Job′s methods. pH-Dependent and Benesi-Hildebrand plot studies also supported this proposed sensing mechanism. Besides, the binding mechanism of Al3+ with probe BOTH was further verified by theor. studies. Moreover, probe BOTH could be used for monitoring Al3+ in living-cells and water samples.

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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics