Category: 616-43-3

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Molecular orbital treatment of a new type of heteroaromatic compound》. Authors are Brown, R. D.; Coller, B. A. W..The article about the compound:3-Methyl-1H-pyrrolecas:616-43-3,SMILESS:CC1=CNC=C1).Category: chiral-oxygen-ligands. Through the article, more information about this compound (cas:616-43-3) is conveyed.

I, II, III, and IV are treated; of these only II is known (Boeckelheide and Windgassen, C.A. 52, 16355i). The present results indicate that all 4 compounds would be stable once formed. Resonance energies, π-electron d., and energies of excited states are given as a function of the electronegativity of N. Definite predictions of the position of highest reactivity toward electrophiles can be made for I and II; it is position 1 in either case.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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: 616-43-3, is researched, SMILESS is CC1=CNC=C1, Molecular C5H7NJournal, International Journal of Chemical Sciences called Synthesis and characterization of N-Mannich bases with pyrimethamine for antimicrobial activities, Author is Senthilraja, M.; Thangadhurai, S. Anand, the main research direction is bactericide fungicide Mannich isatin pyrimethamine Schiff base; antibacterial isatin pyrimethamine Mannich Schiff base.Recommanded Product: 616-43-3.

Schiff bases of isatin with pyrimethamine and its N-Mannich bases were synthesized. Antimicrobial evaluation was done by agar dilution method against 10 pathogenic bacteria and 4 pathogenic fungi. The new derivatives exhibited higher potency compared to the standard drugs against all organisms (against all bacteria). All the compounds exhibited antifungal activity.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Gonzalez-Tejera, M. J.; Garcia, M. V.; Sanchez de la Blanca, E.; Redondo, M. I.; Raso, M. A.; Carrillo, I. published an article about the compound: 3-Methyl-1H-pyrrole( cas:616-43-3,SMILESS:CC1=CNC=C1 ).HPLC of Formula: 616-43-3. 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:616-43-3) through the article.

Electrochem. copolymerization of 3-methylpyrrole and N-methylpyrrole perchlorate doped was carried out at 2 overpotentials and at different electrodeposition times in MeCN medium. A mixture of instantaneous and progressive nucleation mechanisms was established from the c.d.-time transients. Doping/dedoping reversibility is deduced from the electrochem. study of copolymer films by cyclic voltammetry. FTIR spectrum anal. shows that electropolymerization time has a great influence on the random monomers proportion in the copolymer obtained. Although the copolymer conductivity is in the range of that measured for poly(3-methylpyrrole) and poly(N-methylpyrrole) obtained in similar conditions, it remains conductive for a much longer time than the homopolymers.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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.Chow, Christopher W. K.; van Leeuwen, John A.; Fabris, Rolando; Drikas, Mary researched the compound: 3-Methyl-1H-pyrrole( cas:616-43-3 ).Recommanded Product: 616-43-3.They published the article 《Optimised coagulation using aluminium sulfate for the removal of dissolved organic carbon》 about this compound( cas:616-43-3 ) in Desalination. Keywords: aluminum sulfate dissolved organic carbon coagulation water treatment; reservoir water pollution natural organic matter coagulation. We’ll tell you more about this compound (cas:616-43-3).

Coagulation experiments at pH values ranging from 3 to 7 were conducted on raw water samples from four Australian reservoirs-Hope Valley, Myponga, Moorabool and Mt Zero-to assess the removal of natural organic matter (NOM) with alum. The aim was to characterize the NOM in these water sources that is highly recalcitrant to removal by alum coagulation. The selection of these water sources covered a range in raw water quality varying in inorganic and organic composition and character. NOM in both raw and treated waters was characterized by several techniques including specific UV absorbance (SUVA), high performance size exclusion chromatog. (HPSEC) and pyrolysis-gas chromatog. mass spectrometry (Py-GC-MS). The results can provide better understanding of the removal limitations of each treatment step and the knowledge will allow design engineers to select a suitable combined treatment process for optimum NOM removal. Despite the fact that the organic character of the four source waters were different, results showed that after optimized alum coagulation all four waters had a similar character. The mol. weight distribution anal. (HPSEC) indicated alum coagulation preferentially removed the higher mol. weight UV absorbing compounds while those remaining in the treated waters had the properties of lower apparent mol. weights (about 500-700 Daltons) and less UV absorbance. Py-GC-MS analyses of NOM in these waters before and after treatment indicated that polysaccharides and their derivatives are recalcitrant to removal with alum coagulation. Generally, the findings indicate that the character of the NOM is an important factor in determining its treatability.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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: 616-43-3, is researched, SMILESS is CC1=CNC=C1, Molecular C5H7NJournal, Article, Research Support, Non-U.S. Gov’t, Organic Letters called Direct Synthesis of Bipyrroles Using Phenyliodine Bis(trifluoroacetate) with Bromotrimethylsilane, Author is Dohi, Toshifumi; Morimoto, Koji; Maruyama, Akinobu; Kita, Yasuyuki, the main research direction is bipyrrole regioselective preparation; biindole regioselective preparation; regioselective oxidative dimerization pyrrole indole phenyliodonium trifluoroacetate bromotrimethylsilane.Formula: C5H7N.

Bipyrroles and a biindole are prepared regioselectively by oxidative dimerization of pyrroles or indoles with phenyliodine bis(trifluoroacetate) (PIFA) in the presence of bromotrimethylsilane. 3,4-Disubstituted pyrroles and 4,5,6,7-tetrahydroisoindole undergo dimerization to give 2,2′-bipyrroles (or 4,4′,5,5′,6,6′,7,7′-octahydro-1,1′-biisoindole) in 60-78% yields (with respect to PIFA). 3-Substituted-1H-pyrroles undergo regioselective oxidative dimerization with PIFA and bromotrimethylsilane to give 3,4′-disubstituted-2,2′-bipyrroles as the major products in 52-82% yields along with varying amounts of the 3,3′-disubstituted-2,2′-bipyrroles. 3-Methylindole undergoes oxidative dimerization to give 3,3′-dimethyl-2,2′-biindole in 74% yield in addition to 29% of 2-(3-methyl-1-indolyl)-3-methylindoline. While pyrrole undergoes oxidative dimerization with PIFA and bromotrimethylsilane to give only 2,2′-bipyrrole in 78% yield, 1-phenylpyrrole reacts under similar conditions to give 1,1′-diphenyl-2,3′-bipyrrole in 56% yield.

Here is just a brief introduction to this compound(616-43-3)Formula: C5H7N, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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: 616-43-3, is researched, Molecular C5H7N, about The synthesis of new 3-substituted pyrroles, the main research direction is silylpyrrole; pyrrole silyl; desilylation silylpyrrole.Category: chiral-oxygen-ligands.

The synthesis of 3-alkyl-, 3-(ω-bromoalkyl)-, 3-iodo-, 3-formyl-, 3-acetyl-1-(triisopropylsilyl)pyrrole, 2-[1-(triisopropylsilyl)-3-pyrrolyl]-2-propanol, 1-(triisopropylsilyl)-3-pyrrolecarboxylic acid, and 7-[1-(triisopropylsilyl)-3-pyrrolyl]heptanoic acid as well as the desilylation of these products to the corresponding 3-substituted pyrroles is described. Intermediates in these syntheses are 1-(triisopropylsilyl)pyrrole, 3-bromo-, and 3-litho-1-(triisopropylsilyl)pyrrole.

Here is just a brief introduction to this compound(616-43-3)Category: chiral-oxygen-ligands, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Application In Synthesis of 3-Methyl-1H-pyrrole. 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. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Transformation of Nitrogen and Evolution of N-Containing Species during Algae Pyrolysis.

Transformation and evolution mechanisms of nitrogen during algae pyrolysis were investigated in depth with exploration of N-containing products under variant temperature Results indicated nitrogen in algae is mainly in the form of protein-N (∼90%) with some inorganic-N. At 400-600 °C, protein-N in algae cracked first with algae pyrolysis and formed pyridinic-N, pyrrolic-N, and quaternary-N in char. The content of protein-N decreased significantly, while that of pyrrolic-N and quaternary-N increased gradually with temperature increasing. Pyridinic-N and pyrrolic-N formation was due to deamination or dehydrogenation of amino acids; subsequently, some pyridinic-N converted to quaternary-N. Increasing temperature decreased amides content greatly while increased that of nitriles and N-heterocyclic compounds (pyridines, pyrroles, and indoles) in bio-oil. Amides were formed through NH3 reacting with fatty acids, that underwent dehydration to form nitriles. Besides, NH3 and HCN yields increased gradually. NH3 resulted from ammonia-N, labile amino acids and amides decomposition, while HCN came from nitrile decomposition At 700-800 °C, evolution trend of N-containing products was similar to that at 400-600 °C. While N-heterocyclic compounds in bio-oil mainly came from pyrifinic-N, pyrrolic-N, and quaternary-N decomposition Moreover, cracking of pyridinic-N and pyrrolic-N produced HCN and NH3. A mechanism of nitrogen transformation during algae pyrolysis is proposed based on amino acids decomposition

Here is just a brief introduction to this compound(616-43-3)Application In Synthesis of 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Improved preparation of 3-methylpyrrole. Laboratory note, the main research direction is PYRROLE METHYL.Application In Synthesis of 3-Methyl-1H-pyrrole.

An improved synthesis of 3-methylpyrrole (I) and the N.M.R. spectra of the intermediates and product are given. Thus, 20 g. 3-carbethoxy-4-methyl-2-pyrrolecarboxylic acid is refluxed 1 hr. with 300 ml. 40% KOH, cooled, acidified with dilute HCl, filtered, washed with water, and dried to give 70% 4-methylpyrrole-2,3-dicarboxylic acid (II), m. 225°. II (12 g.) is added to 1 g. powd. Cu and heated under 50 mm. to dist. 87% I.

Here is just a brief introduction to this compound(616-43-3)Application In Synthesis of 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

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 Thermal reactions of organic nitrogen compound. I. I-Methylpyrrole, published in 1958, which mentions a compound: 616-43-3, mainly applied to , Name: 3-Methyl-1H-pyrrole.

A flow method was used at 475-700°. At 475-575° the reaction was a homogeneous 1st-order isomerization, 1-methylpyrrole → 2-methylpyrrole → 3-methylpyrrole. The Arrhenius equation for this reaction, based on the disappearance of 1-methylpyrrole, is k = 2.39 × 1012e(-54,800/RT). Above 575° there was decomposition to give a complex mixture of reaction products.

Here is just a brief introduction to this compound(616-43-3)Name: 3-Methyl-1H-pyrrole, more information about the compound(3-Methyl-1H-pyrrole) is in the article, you can click the link below.

Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate

Product Details of 616-43-3. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Improved preparation of 3-methylpyrrole. Laboratory note. Author is Elguero, Jose; Jacquier, Robert; Shimizu, Bernard.

An improved synthesis of 3-methylpyrrole (I) and the N.M.R. spectra of the intermediates and product are given. Thus, 20 g. 3-carbethoxy-4-methyl-2-pyrrolecarboxylic acid is refluxed 1 hr. with 300 ml. 40% KOH, cooled, acidified with dilute HCl, filtered, washed with water, and dried to give 70% 4-methylpyrrole-2,3-dicarboxylic acid (II), m. 225°. II (12 g.) is added to 1 g. powd. Cu and heated under 50 mm. to dist. 87% I.

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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate