Day: March 29, 2022

Formula: C4H10Cl2NiO2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Nickel(II) chloride ethylene glycol dimethyl ether complex, is researched, Molecular C4H10Cl2NiO2, CAS is 29046-78-4, about Enantio- and Regioselective NiH-Catalyzed Reductive Hydroarylation of Vinylarenes with Aryl Iodides. Author is He, Yuli; Liu, Chuang; Yu, Lei; Zhu, Shaolin.

A highly enantio- and regioselective hydroarylation process of vinylarenes with aryl halides has been developed using a NiH catalyst and a new chiral bis imidazoline ligand. A broad range of structurally diverse, enantio-enriched 1,1-diarylalkanes, a structure found in a number of biol. active mols., have been obtained with excellent yields and enantio-selectivities under extremely mild conditions.

Here is a brief introduction to this compound(29046-78-4)Formula: C4H10Cl2NiO2, if you want to know about other compounds related to this compound(29046-78-4), you can read my other articles.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

COA of Formula: C4H10Cl2NiO2. 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: Nickel(II) chloride ethylene glycol dimethyl ether complex, is researched, Molecular C4H10Cl2NiO2, CAS is 29046-78-4, about Simplified and versatile access to low valent Ni complexes by metal-free reduction of NiII precursors. Author is Moser, Emile; Jeanneau, Erwann; Mezailles, Nicolas; Olivier-Bourbigou, Helene; Breuil, Pierre-Alain R..

The reduction of [Ni(DME)Cl2] with 2 equiv of bis(trimethylsilyl)-1,4-tetramethyldihydropyrazine in the presence of a ligand L and an excess of olefin cleanly leads to [Ni(L)(alkene)2] complexes. When reduction is performed in the presence of 1,5-cyclooctadiene (COD), [Ni(COD)2] is obtained. Such an approach also allows access to the NiI dimer [Ni(bis(dicyclohexylphosphino)propane)Cl]2.

Here is a brief introduction to this compound(29046-78-4)COA of Formula: C4H10Cl2NiO2, if you want to know about other compounds related to this compound(29046-78-4), you can read my other articles.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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, Tetrahedron Letters called Asymmetric catalytic cyclopropanation of olefins: bis-oxazoline copper complexes, Author is Lowenthal, Richard E.; Abiko, Atsushi; Masamune, Satoru, which mentions a compound: 132098-59-0, SMILESS is C1(CC2=N[C@@H](C3=CC=CC=C3)CO2)=N[C@@H](C4=CC=CC=C4)CO1, Molecular C19H18N2O2, Computed Properties of C19H18N2O2.

Bis-oxazolines were prepared from di-Et malonate and chiral amino alcs. and converted into their Cu(II) complexes which, upon activation, exhibit high enantioselectivity of up to 99% ee for catalytic cyclopropanation of olefins. Thus, cyclopropanation of styrene with ethyl diazoacetate catalyzed by bis-oxazoline copper complex I activated by phenylhydrazine in THF gave 80% cyclopropanecarboxylates II with 97% trans enantiomeric excess and 77% cis enantiomeric excess.

Here is a brief introduction to this compound(132098-59-0)Computed Properties of C19H18N2O2, if you want to know about other compounds related to this compound(132098-59-0), you can read my other articles.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Quality Control of 2-Phenylpyridine. 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: 2-Phenylpyridine, is researched, Molecular C11H9N, CAS is 1008-89-5, about Visible-Light-Driven C4-Selective Alkylation of Pyridinium Derivatives with Alkyl Bromides.

Reported herein is a general strategy for the photochem. cross-coupling between N-amidopyridinium salts and various alkyl bromides under photocatalyst-free conditions, granting facile access to various C4-alkylated pyridines. This approach exploits the intriguing photochem. activity of electron donor-acceptor (EDA) complexes between N-amidopyridinium salts and bromide, which provides a photoactive handle capable of generating silyl radicals and driving the alkylation process. The robustness of this protocol was further demonstrated by the late-stage functionalization of complex compounds, e.g., dehydroepiandrosterone and oxaprozin, under mild and metal-free conditions.

Here is a brief introduction to this compound(1008-89-5)Quality Control of 2-Phenylpyridine, if you want to know about other compounds related to this compound(1008-89-5), you can read my other articles.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

COA of Formula: C21H24N2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene, is researched, Molecular C21H24N2, CAS is 141556-42-5, about NHC-Stabilized 1,2-Dihalodiborenes: Synthesis, Characterization, and Reactivity Toward Elemental Chalcogens. Author is Stoy, Andreas; Arrowsmith, Merle; Eysselein, Maximilian; Dellermann, Theresa; Mies, Jan; Radacki, Krzysztof; Kupfer, Thomas; Braunschweig, Holger.

The 2-fold reduction of B2X4(NHC)2 (X = Cl, Br, I; NHC = (un)saturated N-heterocyclic carbene) yields the corresponding green-colored 1,2-dihalodiborenes B2X2(NHC)2, the 11B NMR resonances of which are strongly upfield-shifted upon descending the halide group. The diborenes crystallize as the trans isomers, with relatively short B=B double bonds (1.513(9) to 1.568(4) Å). Cyclic voltammetric experiments with these diborenes reveal reversible one-electron oxidation processes to the corresponding diboron radical cation (E1/2 = -1.16 to -1.50 V); the reducing power of B2X2(NHC)2 increasing with the electronegativity of the halide and for the less π-accepting unsaturated NHCs. The main UV-vis absorption (393-463 nm), which corresponds mainly to a HOMO → LUMO transition, undergoes a blue shift upon descending the halide group and shows some dependence on the stereoelectronics of the NHC ligands. Computational analyses show that the HOMO of B2X2(NHC)2 is mostly localized on the B=B π bond, with the contribution from halide p orbitals decreasing down the group, and the saturated NHCs affording some π-bonding delocalization over the B-CNHC bonds. The calculated HOMO and LUMO energies decrease upon descending the halide group, while the HOMO-LUMO gap also decreases, correlating well with the cyclovoltammetry and UV-vis data. The reactions of B2Br2(NHC)2 with elemental sulfur and red selenium lead to the formation of the corresponding diborathiiranes and seleniranes, resp., which were characterized by NMR and UV-vis spectroscopy, cyclic voltammetry, and X-ray diffraction analyses. In one case, an addnl. one-electron oxidation yields a unique cyclic B2Se radical cation. Computational analyses show that the localization of the HOMO and HOMO – 1 of the diboraseleniranes is inverted compared to the diborathiiranes.

Here is a brief introduction to this compound(141556-42-5)COA of Formula: C21H24N2, if you want to know about other compounds related to this compound(141556-42-5), you can read my other articles.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles