Month: March 2022

Electric Literature of C6H10O3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Low Temperature Chlorine-Initiated Oxidation of Small-Chain Methyl Esters: Quantification of Chain-Terminating HO2-Elimination Channels. Author is Muller, Giel; Scheer, Adam; Osborn, David L.; Taatjes, Craig A.; Meloni, Giovanni.

Cl-initiated oxidation reactions of three small-chain Me esters, Me propanoate (CH3CH2COOCH3; MP), Me butanoate (CH3CH2CH2COOCH3; MB), and Me valerate (CH3CH2CH2CH2COOCH3; MV), are studied at 1 or 8 Torr and 550 and 650 K. Products are monitored as a function of mass, time, and photoionization energy using multiplexed photoionization mass spectrometry coupled to tunable synchrotron photoionization radiation. Pulsed photolysis of mol. chlorine is the source of Cl radicals, which remove an H atom from the ester, forming a free radical. In each case, after addition of O2 to the initial radicals, chain-terminating HO2-elimination reactions are observed to be important. Branching ratios among competing HO2-elimination channels are determined via absolute photoionization spectra of the unsaturated Me ester coproducts. At 550 K, HO2-elimination is observed to be selective, resulting in nearly exclusive production of the conjugated Me ester coproducts, Me propenoate, methyl-2-butenoate, and methyl-2-pentenoate, resp. However, in MV, upon raising the temperature to 650 K, other HO2-elimination pathways are observed that yield Me 3-pentenoate and Me 4-pentenoate. In each Me ester oxidation reaction, a peak is observed at a mass consistent with cyclic ether formation, indicating chain-propagating OH loss/ring formation pathways via QOOH intermediates. Evidence is observed for the participation of resonance-stabilized QOOH in the most prominent cyclic ether pathways. Stationary point energies for HO2-elimination pathways and select cyclic ether formation channels are calculated at the CBS-QB3 level of theory and assist in the assignment of reaction pathways and final products.

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

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 Preparation and acetylcholinesterase inhibitory activities of pyridine-based 1,3,4-oxadiazole derivatives. Author is Yu, Xiang; Yang, Wude; Huang, Ling; Zhou, Xingji; Chen, Yafang.

Fourteen pyridine-based 1,3,4-oxadiazole derivatives I [R = n-Bu, Ph, 3-pyridyl, etc.] were synthesized from pyridine-2-carboxaldehyde via iodine-mediated oxidative cyclization with substituted hydrazides by using the impregnation method. Their structures were confirmed by m.p., 1H NMR, 13C NMR and HRMS. Preliminary bioassay of these derivatives I, inhibition of acetylcholinesterase (AChE) was also evaluated in-vitro at the concentration of 1μmol/mL. The result showed that compounds I [R = 3-methoxyphenyl, 3-pyridyl, 4-pyridyl] had moderate inhibitory activities with 52%, 59% and 59%, resp. The preliminary structure-activity relationships revealed that the introduction of pyridine ring could enhance the activity. Mol. docking study demonstrated that compound I [R = 4-pyridyl] possessed an optimal docking pose with interactions at the middle of the catalytic active site (CAS) and peripheral anionic site (PAS) of AChE.

If you want to learn more about this compound(2-Furoic hydrazide)Formula: C5H6N2O2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(3326-71-4).

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 new fluorescent chemosensor for Al(III) detection with highly selective in aqueous solution and solid test paper, the main research direction is fluorescent chemosensor Al detection test paper.Name: 2-Furoic hydrazide.

A new fluorescent chemosensor (I) based on salicylaldehyde hydrazide was facilely synthesized through one-step reaction, which exhibited turn-on fluorescent response to Al(III) with 18-fold fluorescence enhancement in aqueous solution at pH 5.5. The binding stoichiometry of 1 toward Al(III) was in 1:1. High selectivity and sensitivity to Al(III) were achieved, which featured a detection limit of 67 nmol L-1 and a linear rang of 1-10 μmol L-1. More importantly, the sensing process could be also performed on solid test paper. After the addition of Al(III), a significant emission color change from yellow to cyan was observed by naked eye due to the intrinsic aggregation-induced emission (AIE) characteristic of 1.

If you want to learn more about this compound(2-Furoic hydrazide)Name: 2-Furoic hydrazide, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(3326-71-4).

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

Synthetic Route of C8H12O4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Counterion-Controlled Formation of an Octanuclear Uranyl Cage with cis-1,2-Cyclohexanedicarboxylate Ligands. Author is Thuery, Pierre; Atoini, Youssef; Harrowfield, Jack.

Cis-1,2-Cyclohexanedicarboxylic acid (c-chdcH2) was reacted with uranyl nitrate under (solvo-)hydrothermal conditions in the presence of different possible counterions. Two neutral complexes of 1:1 stoichiometry were obtained, [UO2(c-chdc)(DMF)] (1) and [UO2(c-chdc)(H2O)] (2), which crystallize as two-dimensional coordination polymers and do not include the addnl. cations present in solution In contrast, the complex [NH4][PPh4][(UO2)8(c-chdc)9(H2O)6]•3H2O (3) crystallized in the presence of PPh4Br, ammonium cations being generated in situ from acetonitrile hydrolysis. This complex of 8:9 uranium:ligand stoichiometry contains an octanuclear anionic cage of D3 symmetry with a pseudo-cubic arrangement of uranium atoms. The ammonium cation is held within the cage through four hydrogen bonds with uranyl oxo groups directed inwards. This cage complex is luminescent, although with a low quantum yield of 0.06, indicating some potential as a photo-oxidant of included species.

If you want to learn more about this compound(cis-Cyclohexane-1,2-dicarboxylic acid)Synthetic Route of C8H12O4, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(610-09-3).

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

Rani Gupta, Shraddha; Yadav, Pranjalee; Singh, Priya; Koch, Biplob; Singh, Vinod P. published an article about the compound: 2-Furoic hydrazide( cas:3326-71-4,SMILESS:O=C(C1=CC=CO1)NN ).Formula: C5H6N2O2. 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.

A furan-based water soluble fluorescent probe (E)-N′-(2,4-dihydroxybenzylidene)furan-2-carbohydrazide (DBF) has been synthesized and characterized by 1H NMR, 13C NMR, ESI-mass spectroscopy and single crystal X-ray diffraction techniques. The synthesized probe exhibits a “”turn-on”” fluorescence response towards Al3+ in Tris-HCl buffer (10 mM) with no significant interference from other metal ions. The strong fluorescence in the presence of Al3+ is attributed to the CHEF (chelation enhanced fluorescence), inhibition of PET (photo-induced electron transfer) and C=N isomerization. 1 : 1 stoichiometric ratio between DBF and Al3+ was rationalized by Job′s plot. Binding constant and LOD were calculated to be 1.031×105 M-1 and 6.34×10-8 M, resp. MTT assay on live A549 cells indicated no serious cytotoxicity in the cells even at higher concentration Further, DBF was successfully used for the detection of accumulated Al3+ in the cytoplasm of cells.

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

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, Jingxi Huagong called Synthesis of the alkyl esters of α-furoic acid as flavors, Author is Yao, Lihong; Su, Chang’an; Chen, Xin; Qi, Liquan; Tie, Mei, which mentions a compound: 37443-42-8, SMILESS is O=C(C1OCCC1)OC, Molecular C6H10O3, Application In Synthesis of Methyl tetrahydrofuran-2-carboxylate.

The seven alkyl esters of α-furoic acid were synthesized in 80-95.6% yields by refluxing the solution of benzene (or toluene) containing 0.1 mol α-furoic acid and the corresponding aliphatic alcs. (0.12∼0.5 mol) for 3 h in the presence of p-toluenesulfonic acid (0.01 mol) and 5 mL 30% hydrogen peroxide.

If you want to learn more about this compound(Methyl tetrahydrofuran-2-carboxylate)Application In Synthesis of Methyl tetrahydrofuran-2-carboxylate, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(37443-42-8).

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

HPLC of Formula: 3326-71-4. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about 4,6-Diacetyl Resorcinol Based Vanadium(V) Complexes: Reactivity and Catalytic Applications. Author is Maurya, Mannar R.; Jangra, Nancy; Avecilla, Fernando; Correia, Isabel.

Four ONO donor ligands are isolated from the condensation of 4,6-diacetyl resorcinol with isonicotinoyl hydrazide (H2dar-inh, I), nicotinoyl hydrazide (H2dar-nah, II), benzoyl hydrazide (H2dar-bhz, III), and 2-furoyl hydrazide (H2dar-fah, IV) on refluxing in MeOH. The reaction of in situ generated aqueous K[H2VVO4] with ligands I-IV at neutral pH gives complexes [K(H2O)2][VO2(dar-inh)] (1), [K(H2O)2][VO2(dar-nah)] (2), [K(H2O)2][VO2(dar-bhz)] (3), and [K(H2O)2][VO2(dar-fah)] (4), resp. The reaction of [VIVO(acac)2] (acac = acetylacetonato) with these ligands (I-IV) under aerobic conditions in methanol yields oxidomethoxidovanadium(V) complexes [VO(OMe)(MeOH)(dar-inh)] (5), [VO(OMe)(MeOH)(dar-nah)] (6), [VO(OMe)(MeOH)(dar-bhz)] (7), and [VO(OMe)(MeOH)(dar-fah)] (8). All the isolated complexes are characterized by elemental, thermal, electrochem., and spectroscopic techniques [FTIR, UV/Vis, NMR (1H, 13C and 51 V NMR)], and single-crystal X-ray diffraction anal. (for 1, 6, 7, and 8). X-ray anal. confirms the coordination of the ligands through Ophenolate, Nazomethine, and Oenolate to the metal center. In the mol. structure of [K(H2O)(EtOH)][VVO2(dar-inh)] (abbreviated as 1a where one mol. of water is replaced by EtOH), water mols. act as bridges between two K+ ions and the complex shows a dimeric structure due to the presence of electrostatic interactions between V=O oxygen atoms with K+ ions. These complexes are active catalysts for the oxidative bromination of thymol in the presence of KBr, HClO4, and H2O2 and give 2-bromothymol, 4-bromothymol, and 2,4-dibromothymol as major products. Complexes 1-4 were also tested as catalysts for the epoxidation of various alkenes (namely styrene, cyclohexene, cis-cyclooctene, 1-hexene, 1-octene, cyclohexenone, and trans-stilbene) with H2O2 in the presence of NaHCO3 as promoter, giving the corresponding epoxides selectively.

If you want to learn more about this compound(2-Furoic hydrazide)HPLC of Formula: 3326-71-4, you may wish to communicate with the author of the article,or consult the relevant literature related to 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 《FT-IR and FT-Raman spectroscopy study of the cyclic anhydride intermediates for the esterification of cellulose. Part 3. Cyclic anhydrides formed by the isomers of cyclohexanedicarboxylic acid》. Authors are Yang, Charles Q.; Zhang, Guobao.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 In Synthesis of cis-Cyclohexane-1,2-dicarboxylic acid. Through the article, more information about this compound (cas:610-09-3) is conveyed.

Multifunctional carboxylic acids were used as crosslinking agents for cotton and wood pulp cellulose. In the authors’ previous research, the authors found that a polycarboxylic acid esterifies cellulose through the formation of a 5-membered cyclic anhydride intermediate by the dehydration of 2 carboxyl groups. The authors studied the formation of those cyclic anhydride intermediates by different isomers of cyclohexanedicarboxylic acid (CHA) so that the authors can elucidate the effects of mol. structure on the formation of the anhydride intermediates. The authors found that both cis- and trans-1,2-CHA form 5-membered anhydride intermediates when temperature reaches their m.p. and that cis-1,2-CHA forms the cyclic anhydride at temperatures lower than does trans-1,2-CHA. 1,3-CHA forms 6-membered cyclic anhydride at temperatures much higher than its m.p. The formation of a 5-membered cyclic anhydride intermediates takes place at temperatures lower than that of a 6-membered anhydride. This is probably the main reason why those polycarboxylic acids with their carboxylic acid groups bonded to the adjacent carbons of the mol. backbones are more effective crosslinking agents for cellulose than those with their carboxylic groups bonded to the alternative carbons. No formation of cyclic anhydride was found for 1,4-CHA. The formation of a 5-membered cyclic anhydride was accelerated by monosodium phosphate, which is used as a catalyst for the esterification of cotton cellulose by polycarboxylic acids.

If you want to learn more about this compound(cis-Cyclohexane-1,2-dicarboxylic acid)Application In Synthesis of cis-Cyclohexane-1,2-dicarboxylic acid, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(610-09-3).

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 37443-42-8, is researched, SMILESS is O=C(C1OCCC1)OC, Molecular C6H10O3Journal, Tsuruoka Kogyo Koto Senmon Gakko Kenkyu Kiyo called Catalytic hydrogenation of furan derivatives. 8. The behavior of products with the passage of the reaction time, Author is Shinozaki, Kohichi; Abe, Mitsuyuki; Uchiyama, Midori, the main research direction is hydrogenation furan palladium; THF preparation catalyst.Quality Control of Methyl tetrahydrofuran-2-carboxylate.

Hydrogenation of I in R1OH (R1 = lower alkyl) in the presence of Pd black or PdO was studied. I (R = H, Me) over Pd black formed small amounts of intermediate by-product ketals (II), which were hydrogenolyzed to the main products (III). With PdO, considerable amounts of II were formed from I (R = H, Me, CH:CHCO2Me, CO2Me). The amount of II formed decreased with increasing size of both R and R1.

If you want to learn more about this compound(Methyl tetrahydrofuran-2-carboxylate)Quality Control of Methyl tetrahydrofuran-2-carboxylate, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(37443-42-8).

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 Michael addition mediated domino cyclization of hydrazide embedded pyrazolyl derivatives: biological and its molecular docking examinations, published in 2021, which mentions a compound: 3326-71-4, mainly applied to quinoline pyrazoline preparation antitumor antibacterial human mol docking, Electric Literature of C5H6N2O2.

Three quinolinyl-tethered pyrazolines I (R = 3-MeOC6H4, 2-furyl, 4-pyridyl) were synthesized in good yields by domino Michael-addition/cyclization of (E)-2-chloro-3-[2-(4-methylphenyl)ethenyl]-8-methylquinoline, prepared from 2-chloro-8-methyl-3-quinolinecarboxaldehyde and 4-methylacetophenone, with arylhydrazides RC(O)NHNH2. The newly synthesized compounds have been examined for the antimicrobial and anticancer activities by MTT assay as well as mol. docking studies.

If you want to learn more about this compound(2-Furoic hydrazide)Electric Literature of C5H6N2O2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(3326-71-4).

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