Heterocyclic Building Blocks-Benzisoxazole

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2-Furoic hydrazide(SMILESS: O=C(C1=CC=CO1)NN,cas:3326-71-4) is researched.COA of Formula: C6H13NO. The article 《Facile synthesis of 1,3,4-oxadiazoles via iodine promoted oxidative annulation of methyl-azaheteroarenes and hydrazides》 in relation to this compound, is published in Tetrahedron. Let’s take a look at the latest research on this compound (cas:3326-71-4).

An oxidative sp3 C-H bond of methyl-azaheteroarenes protocol RCH3 (R = quinolin-2-yl, benzo[f]quinolin-3-yl, pyridin-2-yl, etc.) was reported for the synthesis of 1,3,4-oxadiazoles I (R1 = 2H-1,3-benzodioxol-5-yl, furan-2-yl, prop-1-en-2-yl, etc.) via [4+1] annulation with hydrazides R1C(O)NHNH2. This protocol enables 1,3,4-oxadiazole and quinoline linked diheterocycles I via selective oxidation of sp3 C-H bond of methyl-azaheteroarenes in the presence of I2-DMSO. The reaction has a broad substrate scope and good functional group tolerance for methyl-azaheteroarenes and hydrazides.

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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 Synthesis and properties of some basic metals and manganese salts of cis-1,2-cyclohexane dicarboxylic acid, the main research direction is transition metal cyclohexanedicarboxylate preparation; wheat fertilizer liver inhibition transition metal cyclohexanedicarboxylate.Application of 610-09-3.

Sodium, potassium, ammonium and manganese salts of cis-1,2-cyclohexanedicarboxylic acid were synthesized. The structural characteristics of these salts were analyzed by thermog. and spectroscopic methods and examined on liver and wheat under the effect of their biol. activities. They can be used as a micro-fertilizer in the fields biol. and agriculture.

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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: 3326-71-4, is researched, SMILESS is O=C(C1=CC=CO1)NN, Molecular C5H6N2O2Journal, Chemistry of Heterocyclic Compounds (New York, NY, United States) called The synthesis of 3-(het)aryl-6,7-dihydro-5H-[1,2,4]-triazolo[3,4-a][2]benzazepines, Author is Glushkov, Vladimir A.; Babentsev, Dmitry N.; Dmitriev, Maksim V.; Stepanova, Kseniya A.; Kharintseva, Anastasiya Yu.; Simakhina, Anastasiya E., the main research direction is aryldihydrotriazolobenzazepine preparation; benzazepine hydrazide cyclization.Safety of 2-Furoic hydrazide.

4-Aryl-2-methylbutan-2-ols with methoxy or methylenedioxy substituents participate in the Graf-Ritter reaction with Me thiocyanate in the presence of an acid (H2SO4, MeSO3H) forming 1-methylsulfanyl-2-benzazepines in low yields (11-35%), which underwent cyclization with benzhydrazide or hetarenecarboxylic acid hydrazides upon reflux in o-dichlorobenzene into the corresponding 3-phenyl- and 3-hetaryl-6,7-dihydro-5H-1,2,4-triazolo[3,4-a][2]benzazepines I (R1 = R2 = OMe, R1+R2 = OCH2O; R3 = H, OMe; R4 = Ph, 2-furyl, 2-thienyl, 4-pyridyl) (45-74% yields).

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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 《Condensation of aromatic aldehydes with glycine and acetylglycine》. Authors are Dakin, H. D..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).HPLC of Formula: 610-09-3. Through the article, more information about this compound (cas:610-09-3) is conveyed.

The condensation referred to in the title is complicated by a competing reaction between CH2(NH2)CO2H and BzH, forming a non-acetylated derivative possibly of a type resembling a Schiff base. The 2 reactions are shown thus: (1) H2NCH2CO2H → AcNHCH2CO2H → MeC:N.C(:CHPh).CO.O → MeCONHC(:CHPh)CO2H, (2) HO2CCH2NH2 + BzH → HO2CCH2N:-CHPh (I) or O.CO.CH2.NH.CHPh. I may be called benzylideneglycine and was isolated and analyzed. Because the 2nd condensation product is a non-acetylated compound its formation can be largely suppressed by acetylating the glycine before the reaction. Correspondingly larger yields of the azlactone of α-acetamidocinnamic acid were obtained. Acetylation was most easily effected by warming glycine suspended in 3 parts of glacial AcOH with the theoretical amount of Ac2O until solution was obtained. A variety of aldehydes was used although the product from salicyl aldehyde was the most interesting. AcOC6H4CH:C.N:CMe.O.CO (II) → HOC3H4CH:C(NHAc)CO2H (III) → O.C6H4.CH:C(NHAc).CO (IV). II on treating with alkali and subsequent acidification forms the transient III which quickly passes over to IV. Detailed exptl. data are given.

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

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Modification of Monocarboxylic Acid Hydrazides with Tropylium Salts, published in 2019-12-31, which mentions a compound: 3326-71-4, Name is 2-Furoic hydrazide, Molecular C5H6N2O2, Recommanded Product: 3326-71-4.

Nicotinic, isonicotinic, and furan-2-carboxylic acid hydrazides reacted with 2 equiv of tropylium perchlorate or tetrafluoroborate to give the corresponding N’N’-di(cyclohepta-2,4,6-trein-1-yl) derivatives as a result of electrophilic substitution of both hydrogen atoms in the primary amino group. The reaction of furan-2-carbohydrazide with an equimolar amount of tropylium salt gave N’-(cyclohepta-2,4,6-trien-1-yl)furan-2-carbohydrazide.

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

Recommanded Product: 2-Furoic hydrazide. 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, crystal structures, and characterization of three zinc complexs with different acylhydrazone-type schiff base ligands. Author is Xie, Qing-fan; Chen, Yan-min.

Three zinc complexes, namely [Zn(Lss)(phen)(DMF)] (1), {[Zn (HLdis)]2·2CH3OH}n (2) and [Zn(Baf)2]·CH3OH (3), formed from different acylhydrazone-type Schiff base ligands were synthesized by using different methods, and the compounds were characterized by IR, UV-Vis spectra and TGA. The X-ray diffraction analyses revealed that 1 and 3 crystallized in the triclinic space group P1̅ while 2 in monoclinic system space group P21/n. In 1 and 3, coordination number of the Zn (II) was six, and the centric atom located in a distorted octahedron geometry, while in 2 Zn (II) was five-coordination in a distorted square-pyramidal geometry. The precursor of 3 was pyrazoline derivative with the formula C15H14N2O3 (Pzl) crystallizing in monoclinic system space group P21/c. Due to the coordination of Zn (II) causing the intramol. rearrangement of Pzl, the ring open product HBaf in the form of an acylhydrazone structure coordinated with Zn (II) to form complex 3.

There are many compounds similar to this compound(3326-71-4)Recommanded Product: 2-Furoic hydrazide. 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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Hexathydro-o-phthalic acids》. Authors are Vavon, G.; Peignier, P..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).Quality Control of cis-Cyclohexane-1,2-dicarboxylic acid. Through the article, more information about this compound (cas:610-09-3) is conveyed.

Hydrogenation of mono-Me o-phthalate with Pt black as catalyst gives cis-hexahydrophthalate (I). The l-rotatory isomer of I (m. 148-9°, [α573 6.67°, c 0.1 in EtOH) gives on saponification an inactive acid. The l-rotatory cis-hexahydrophthalamide ([α]573 -15.4°, c 0.02 in EtOH), isolated by means of the quinine salt, gives on heating an inactive imide.

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

Name: 2-Furoic hydrazide. 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: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about Synthesis of acylhydrazone based fluorescent probe for Al (III) and its property. Author is Long, Zhao-xian; Jiang, Guang-qi.

An acylhydrazone based fluorescent probe was synthesized by two-step reaction with tetrakis(bromomethyl) benzene and 2,4-dihyoxybenzaldehyde as raw materials. The compound showed excellent selectivity for Al3+ in the V(DMSO):V (H2O) = 19:1 solution, showing remarkable fluorescence enhancement effects towards Al3+ at the emission wavelength of 446 nm. The stoichiometry of 1:2 of the Al (III) complexes was determined by Job’s plots, 1HNMR titration experiments and LC-MS anal. The spectroscopic titration indicated that the detection limits of the probe for Al3+ were 1.16 × 10-7 mol/L and the complexing constant of the probe to Al3+ was 2.28 × 10-3 L/mol. Furthermore, the probe can be used for the determination of Al3+ in the river water and tap water samples.

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

Computed Properties of 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 Selective hydrogenolysis of 2-furancarboxylic acid to 5-hydroxyvaleric acid derivatives over supported platinum catalysts. Author is Asano, Takehiro; Takagi, Hiroshi; Nakagawa, Yoshinao; Tamura, Masazumi; Tomishige, Keiichi.

The conversion of 2-furancarboxylic acid (FCA), which is produced by oxidation of furfural, to 5-hydroxyvaleric acid (5-HVA) and its ester/lactone derivatives with H2 was investigated. Monometallic Pt catalysts were effective, and other noble metals were not effective due to the formation of ring-hydrogenation products. Supports and solvents had a small effect on the performance; however, Pt/Al2O3 was the best catalyst and short chain alcs. such as methanol were better solvents. The optimum reaction temperature was about 373 K, and at higher temperature the catalyst was drastically deactivated by deposition of organic materials on the catalyst. The highest yield of target products (5-HVA, δ-valerolactone (DVL), and Me 5-hydroxyvalerate) was 62%, mainly obtained as Me 5-hydroxyvalerate (55% yield). The byproducts were mainly ring-hydrogenation compounds (tetrahydrofuran-2-carboxylic acid and its ester) and undetected ones (loss of carbon balance). The catalyst was gradually deactivated during reuses even at a reaction temperature of 373 K; however, the catalytic activity was recovered by calcination at 573 K. The reactions of various related substrates were carried out, and it was found that the O-C bond in the O-C=C structure (1,2,3-position of the furan ring) is dissociated before C=C hydrogenation while the presence and position of the carboxyl group (or methoxy carbonyl group) much affect the reactivity.

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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: 3326-71-4, is researched, SMILESS is O=C(C1=CC=CO1)NN, Molecular C5H6N2O2Journal, Article, Luminescence called A highly selective aggregation-induced emission fluorogen for sensitive detection of Al3+ in living cells, Author is Xie, Ya; Li, Xueming; Yan, Liqiang; Li, Jianping, the main research direction is A549 cell aggregation induced emission fluorogen aluminum; AIE; Al3+; Schiff’s base; coumarin; fluorescence probe.Reference of 2-Furoic hydrazide.

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.

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