Month: March 2022

Synthetic Route of C6Cl2N4. 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: 5,6-Dichloropyrazine-2,3-dicarbonitrile, is researched, Molecular C6Cl2N4, CAS is 56413-95-7, about Preparation, Electronic and Liquid Crystalline Properties of Electron-Accepting Azaacene Derivatives. Author is Takeda, Takashi; Ikemoto, Tomohiro; Yamamoto, Shunsuke; Matsuda, Wakana; Seki, Shu; Mitsuishi, Masaya; Akutagawa, Tomoyuki.

A series of electron-accepting azaacene-type materials with different kinds and degrees of intermol. interactions were synthesized. Simple modification of the terminal substituents significantly modulated the photophys. and electrochem. properties. The degree of the weak intermol. interaction determined the emergence of a liquid crystalline (LC) phase for each compound Dipole-dipole interaction, π-π interaction and van der Waals interaction all contributed to stabilize the LC phase of I [R = C6H13, C12H25, C18H37] and II. The introduction of strong hydrogen bonding interaction enabled the formation of a highly ordered LC phase in III. Charge-transport properties of I, II and III were also investigated.

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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

Application of 616-43-3. 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: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Model reactions on roast aroma formation. III. Mass spectrometric identification of pyrroles from the reaction of serine and threonine with sucrose under the conditions of coffee roasting. Author is Baltes, Werner; Bochmann, Gloria.

Numerous alkyl- and acylpyrroles, two 2,3-dihydro[1H]pyrrolizines, furfurylpyrroles, and 1 furanylpyrrole were identified in the volatiles of roasting serine, threonine, and sucrose. The formation of the alkylpyrroles was suggested to proceed via a pyrolytic pathway because they were formed in the absence of sucrose. The retention indexes and mass spectra are reported together with selected mass spectrometric fragmentations. A large number of the identified compounds were also recognized in roast coffee volatiles.

Here is a brief introduction to this compound(616-43-3)Application of 616-43-3, if you want to know about other compounds related to this compound(616-43-3), you can read my other articles.

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

HPLC of Formula: 616-43-3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about Model reactions on roast aroma formation. III. Mass spectrometric identification of pyrroles from the reaction of serine and threonine with sucrose under the conditions of coffee roasting. Author is Baltes, Werner; Bochmann, Gloria.

Numerous alkyl- and acylpyrroles, two 2,3-dihydro[1H]pyrrolizines, furfurylpyrroles, and 1 furanylpyrrole were identified in the volatiles of roasting serine, threonine, and sucrose. The formation of the alkylpyrroles was suggested to proceed via a pyrolytic pathway because they were formed in the absence of sucrose. The retention indexes and mass spectra are reported together with selected mass spectrometric fragmentations. A large number of the identified compounds were also recognized in roast coffee volatiles.

Here is a brief introduction to this compound(616-43-3)HPLC of Formula: 616-43-3, if you want to know about other compounds related to this compound(616-43-3), you can read my other articles.

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 reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The protonation of pyrroles》. Authors are Chiang, Y.; Whipple, E. B..The article about the compound:3-Methyl-1H-pyrrolecas:616-43-3,SMILESS:CC1=CNC=C1).Related Products of 616-43-3. Through the article, more information about this compound (cas:616-43-3) is conveyed.

Formation of stable α-protonated salts of pyrrole and methylpyrroles in aqueous H2SO4 is demonstrated by their proton magnetic resonance spectra. The observed rates of deuterium exchange in N-methylpyrrole require, however, that β-protonation of the base occur at the faster rate in concentrated H2SO4 solutions The basicity constant of pyrrole is redetermined as pKa = -3.8, considerably below the currently accepted value, and the variation of the ratio of protonated to unprotonated base with H2SO4 concentrations, while self-consistent within the methylpyrrole series, differs from previously defined class acidity functions. The basicity constants vary with Me substitution in a semi-empirically predictable manner.

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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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Structure-Property Relationships and Nonlinear Optical Effects in Donor-Substituted Dicyanopyrazine-Derived Push-Pull Chromophores with Enlarged and Varied π-Linkers》. Authors are Bures, Filip; Cermakova, Hana; Kulhanek, Jiri; Ludwig, Miroslav; Kuznik, Wojciech; Kityk, Iwan V.; Mikysek, Tomas; Ruzicka, Ales.The article about the compound:5,6-Dichloropyrazine-2,3-dicarbonitrilecas:56413-95-7,SMILESS:N#CC1=NC(Cl)=C(Cl)N=C1C#N).Formula: C6Cl2N4. Through the article, more information about this compound (cas:56413-95-7) is conveyed.

Thirteen new, stable, push-pull systems featuring dimethylamino and pyrazine-2,3-dicarbonitrile moieties as the donor and acceptor, resp., and systematically extended and varied π-linkers were prepared and studied. Evaluation of the measured UV/Vis spectra, electrochem. data (cyclic voltammetry, rotating disk voltammetry, and polarog.), x-ray data, and exptl. determined and calculated hyperpolarizability values enabled structure-property studies; these revealed some important structural features that affected the efficiency of intramol. charge-transfer and nonlinear optical properties in this class of heterocyclic push-pull chromophores. The charge-transfer transition was most significantly affected by structural features such as π-linker length, chromophore planarity, and the number of 1,4-phenylene/ethynylene subunits in the π-linker.

Here is a brief introduction to this compound(56413-95-7)Formula: C6Cl2N4, if you want to know about other compounds related to this compound(56413-95-7), you can read my other articles.

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