49669-14-9 Archives - Alcohols-buliding-blocks

Champouret, Yohan D. M. et al. published their research in Tetrahedron in 2006 | CAS: 49669-14-9

2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Related Products of 49669-14-9

Use of Stille-type cross-coupling as a route to oligopyridylimines was written by Champouret, Yohan D. M.;Chaggar, Rajinder K.;Dadhiwala, Ishaq;Fawcett, John;Solan, Gregory A.. And the article was included in Tetrahedron in 2006.Related Products of 49669-14-9 This article mentions the following:

Tributylstannylpyridinyldioxolanes I (R = H, Me) are prepared; Stille coupling of I with bromopyridines in the presence of tetrakis(triphenylphosphine)palladium(0) followed by acid hydrolysis provides oligopyridinecarboxaldehydes and acetyloligopyridines such as II (R = H, Me) which are converted to arylimines such as III (R = H, Me; R¹ = Me₂CH). Lithiation of 2-(6-bromo-2-pyridinyl)-1,3-dioxolanes followed by alkylation with chlorotributylstannnane provides I (R = H, Me) in 88-92% yields. Stille coupling of I (R = H, Me) with bromopyridines such as 6,6′-dibromo-2,2′-bipyridine in the presence of tetrakis(triphenylphosphine)palladium(0) followed by hydrolysis with hydrochloric acid and neutralization provides oligopyridines such as quaterpyridines II (R = H, Me) in 45-80% yields; attempts to prepare a quinquepyridinedicarboxaldehyde by the same procedure yielded no isolable product because of the insolubility of the product formed upon deprotection. Aldehydes undergo condensation with 2,6-diisopropylaniline in ethanol in the presence of acetic acid to yield oligopyridineimines such as III (R = H; R¹ = Me₂CH), while acetyloligopyridines undergo condensation with 2,6-diisopropylaniline under solvent-free conditions at 160掳 in the presence of formic acid to yield imines such as III (R = Me; R¹ = Me₂CH). Crystal structures of III (R = H; R¹ = Me₂CH) and two other oligopyridylimines are determined by X-ray crystallog. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Related Products of 49669-14-9).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bianchini, Claudio et al. published their research in Organometallics in 2007 | CAS: 49669-14-9

2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Category: alcohols-buliding-blocks

Synthesis of a New Polydentate Ligand Obtained by Coupling 2,6-Bis(imino)pyridine and (Imino)pyridine Moieties and Its Use in Ethylene Oligomerization in Conjunction with Iron(II) and Cobalt(II) Bis-halides was written by Bianchini, Claudio;Giambastiani, Giuliano;Guerrero Rios, Itzel;Meli, Andrea;Oberhauser, Werner;Sorace, Lorenzo;Toti, Alessandro. And the article was included in Organometallics in 2007.Category: alcohols-buliding-blocks This article mentions the following:

In this paper are described the synthesis, characterization, and coordinating properties of a new potentially pentadentate nitrogen ligand, ^CyAr2N₅ (I), that combines in the same mol. structure 2,6-bis(imino)pyridine and (imino)pyridine moieties. This ligand reacts with 1 or 2 equiv of anhydrous MCl₂ (M = Fe, Co) to give paramagnetic mononuclear or homodinuclear complexes of the formula ^CyAr2N₅MCl₂ and ^CyAr2N₅M₂Cl₄. In the dinuclear complexes, one metal center is five-coordinate, while the other is four-coordinate. Ligand and metal complexes were characterized, both in the solid state and in solution, by a variety of techniques, including single-crystal x-ray diffraction analyses, magnetic susceptibility determinations, IR, visible-NIR, ¹H NMR, and X-band EPR spectroscopies. On activation by methylaluminoxane (MAO) in toluene, the Fe^II and Co^II complexes generate effective catalysts for the oligomerization of ethylene to 伪-olefins with productivities and Schulz-Flory parameters depending on the type and number of the coordinated metals. In an attempt to rationalize the surprisingly high activity of the Co^II precursors, and in particular that of the dinuclear derivative ^CyAr2N₅Co₂Cl₄, which is 4 times higher than that of the mononuclear analog ^CyAr2N₅CoCl₂, a Co^II complex was synthesized where the supporting ligand is sterically similar to ^CyAr2N₅, yet it contains only the three nitrogen donor atoms of the 2,6-bis(imino)pyridine moiety. All five nitrogen atoms of ^CyAr2N₅ play an active role under catalytic conditions, even when the precursor contains a free (imino)pyridine moiety. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Category: alcohols-buliding-blocks).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yuan, Yi et al. published their research in Inorganic Chemistry in 2020 | CAS: 49669-14-9

2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.COA of Formula: C9H10BrNO2

Iridium(III) Complexes Bearing a Formal Tetradentate Coordination Chelate: Structural Properties and Phosphorescence Fine-Tuned by Ancillaries was written by Yuan, Yi;Gnanasekaran, Premkumar;Chen, Yu-Wen;Lee, Gene-Hsiang;Ni, Shao-Fei;Lee, Chun-Sing;Chi, Yun. And the article was included in Inorganic Chemistry in 2020.COA of Formula: C9H10BrNO2 This article mentions the following:

Synthesis of the multidentate coordinated chelate N3C-H₂, composed of a linked functional pyridyl pyrazole fragment plus a peripheral Ph and pyridyl unit, was obtained using a multistep protocol. Preparation of Ir(III) metal complexes bearing a N3C chelate in the tridentate (魏³), tetradentate (魏⁴), and pentadentate (魏⁵) modes was executed en route from two nonemissive dimer intermediates [Ir(魏³-N3CH)Cl₂]₂ (1) and [Ir(魏⁴-N3C)Cl]₂ (2). Next, a series of mononuclear Ir(III) complexes with the formulas [Ir(魏⁴-N3C)Cl(py)] (3), [Ir(魏⁴-N3C)Cl(dmap)] (4), [Ir(魏⁴-N3C)Cl(mpzH)] (5), and [Ir(魏⁴-N3C)Cl(dmpzH)] (6), as well as diiridium complexes [Ir₂(魏⁵-N3C)(mpz)₂(CO)(H)₂] (7) and [Ir₂(魏⁵-N3C)(dmpz)₂(CO)(H)₂] (8), were obtained upon treatment of dimer 2 with pyridine (py), 4-dimethylaminopyridine (dmap), 4-methylpyrazole (mpzH), and 3,5-dimethylpyrazole (dmpzH), resp. These Ir(III) metal complexes were identified using spectroscopic methods and by x-ray crystallog. anal. of representative derivatives 3, 5, and 7. Their photophys. and electrochem. properties were investigated and confirmed by the theor. simulations. Notably, green-emitting organic light-emitting diode (OLED) on the basis of Ir(III) complex 7 gives a maximum external quantum efficiency up to 25.1%. This result sheds light on the enormous potential of this tetradentate coordinated chelate in the development of highly efficient iridium complexes for OLED applications. Preparation of Ir(III) complexes bearing tailor-made multidentate N3C chelate are reported, from which a green-emitting OLED with a maximum EQE of 25.1% was successfully fabricated using diiridium complex 7. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9COA of Formula: C9H10BrNO2).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Champouret, Yohan D. M. et al. published their research in Tetrahedron in 2006 | CAS: 49669-14-9

Tributylstannylpyridinyldioxolanes I (R = H, Me) are prepared; Stille coupling of I with bromopyridines in the presence of tetrakis(triphenylphosphine)palladium(0) followed by acid hydrolysis provides oligopyridinecarboxaldehydes and acetyloligopyridines such as II (R = H, Me) which are converted to arylimines such as III (R = H, Me; R¹ = Me₂CH). Lithiation of 2-(6-bromo-2-pyridinyl)-1,3-dioxolanes followed by alkylation with chlorotributylstannnane provides I (R = H, Me) in 88-92% yields. Stille coupling of I (R = H, Me) with bromopyridines such as 6,6′-dibromo-2,2′-bipyridine in the presence of tetrakis(triphenylphosphine)palladium(0) followed by hydrolysis with hydrochloric acid and neutralization provides oligopyridines such as quaterpyridines II (R = H, Me) in 45-80% yields; attempts to prepare a quinquepyridinedicarboxaldehyde by the same procedure yielded no isolable product because of the insolubility of the product formed upon deprotection. Aldehydes undergo condensation with 2,6-diisopropylaniline in ethanol in the presence of acetic acid to yield oligopyridineimines such as III (R = H; R¹ = Me₂CH), while acetyloligopyridines undergo condensation with 2,6-diisopropylaniline under solvent-free conditions at 160° in the presence of formic acid to yield imines such as III (R = Me; R¹ = Me₂CH). Crystal structures of III (R = H; R¹ = Me₂CH) and two other oligopyridylimines are determined by X-ray crystallog. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Related Products of 49669-14-9).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bianchini, Claudio et al. published their research in Organometallics in 2007 | CAS: 49669-14-9

In this paper are described the synthesis, characterization, and coordinating properties of a new potentially pentadentate nitrogen ligand, ^CyAr2N₅ (I), that combines in the same mol. structure 2,6-bis(imino)pyridine and (imino)pyridine moieties. This ligand reacts with 1 or 2 equiv of anhydrous MCl₂ (M = Fe, Co) to give paramagnetic mononuclear or homodinuclear complexes of the formula ^CyAr2N₅MCl₂ and ^CyAr2N₅M₂Cl₄. In the dinuclear complexes, one metal center is five-coordinate, while the other is four-coordinate. Ligand and metal complexes were characterized, both in the solid state and in solution, by a variety of techniques, including single-crystal x-ray diffraction analyses, magnetic susceptibility determinations, IR, visible-NIR, ¹H NMR, and X-band EPR spectroscopies. On activation by methylaluminoxane (MAO) in toluene, the Fe^II and Co^II complexes generate effective catalysts for the oligomerization of ethylene to α-olefins with productivities and Schulz-Flory parameters depending on the type and number of the coordinated metals. In an attempt to rationalize the surprisingly high activity of the Co^II precursors, and in particular that of the dinuclear derivative ^CyAr2N₅Co₂Cl₄, which is 4 times higher than that of the mononuclear analog ^CyAr2N₅CoCl₂, a Co^II complex was synthesized where the supporting ligand is sterically similar to ^CyAr2N₅, yet it contains only the three nitrogen donor atoms of the 2,6-bis(imino)pyridine moiety. All five nitrogen atoms of ^CyAr2N₅ play an active role under catalytic conditions, even when the precursor contains a free (imino)pyridine moiety. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Category: alcohols-buliding-blocks).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yuan, Yi et al. published their research in Inorganic Chemistry in 2020 | CAS: 49669-14-9

Synthesis of the multidentate coordinated chelate N3C-H₂, composed of a linked functional pyridyl pyrazole fragment plus a peripheral Ph and pyridyl unit, was obtained using a multistep protocol. Preparation of Ir(III) metal complexes bearing a N3C chelate in the tridentate (κ³), tetradentate (κ⁴), and pentadentate (κ⁵) modes was executed en route from two nonemissive dimer intermediates [Ir(κ³-N3CH)Cl₂]₂ (1) and [Ir(κ⁴-N3C)Cl]₂ (2). Next, a series of mononuclear Ir(III) complexes with the formulas [Ir(κ⁴-N3C)Cl(py)] (3), [Ir(κ⁴-N3C)Cl(dmap)] (4), [Ir(κ⁴-N3C)Cl(mpzH)] (5), and [Ir(κ⁴-N3C)Cl(dmpzH)] (6), as well as diiridium complexes [Ir₂(κ⁵-N3C)(mpz)₂(CO)(H)₂] (7) and [Ir₂(κ⁵-N3C)(dmpz)₂(CO)(H)₂] (8), were obtained upon treatment of dimer 2 with pyridine (py), 4-dimethylaminopyridine (dmap), 4-methylpyrazole (mpzH), and 3,5-dimethylpyrazole (dmpzH), resp. These Ir(III) metal complexes were identified using spectroscopic methods and by x-ray crystallog. anal. of representative derivatives 3, 5, and 7. Their photophys. and electrochem. properties were investigated and confirmed by the theor. simulations. Notably, green-emitting organic light-emitting diode (OLED) on the basis of Ir(III) complex 7 gives a maximum external quantum efficiency up to 25.1%. This result sheds light on the enormous potential of this tetradentate coordinated chelate in the development of highly efficient iridium complexes for OLED applications. Preparation of Ir(III) complexes bearing tailor-made multidentate N3C chelate are reported, from which a green-emitting OLED with a maximum EQE of 25.1% was successfully fabricated using diiridium complex 7. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9COA of Formula: C9H10BrNO2).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zheng, Zhong et al. published their research in Inorganic Chemistry in 2022 | CAS: 49669-14-9

Stepwise Access of Emissive Ir(III) Complexes Bearing a Multi-Dentate Heteroaromatic Chelate: Fundamentals and Applications was written by Zheng, Zhong;Zhu, Ze-Lin;Ho, Cheuk-Lam;Yiu, Shek-Man;Lee, Chun-Sing;Suramitr, Songwut;Hannongbua, Supa;Chi, Yun. And the article was included in Inorganic Chemistry in 2022.Computed Properties of C9H10BrNO2 This article mentions the following:

Three multi-dentate coordinated chelates LnH₂ (n = 1, 2, and 3), comprising a linked 1-(pyridin-2-yl)ethylbenzene and one pyrazolyl pyridine unit and showing either tridentate or tetradentate coordination modes, are successfully designed and synthesized. Dinuclear Ir(III) complexes [Ir(κ⁴-Ln)(μ-Cl)]₂ bearing tetradentate coordinated κ⁴-Ln chelate (2a, n = 1; 2b, n = 2; 2c, n = 3) were next obtained en route from the resp. intermediate [Ir(κ³-LnH)Cl(μ-Cl)]₂ bearing the tridentate coordinated κ³-LnH chelate (1a, n = 1; 1b, n = 2; 1c, n = 3). Next, mononuclear Ir(III) complexes Ir(κ⁴-Ln)(thd) (3a, n = 1; 3b, n = 2; 3c, n = 3) with the tetradentate chelate were obtained upon treatment of 2 with 2,2,6,6-tetramethyl-3,5-heptanedione (thd)H in the presence of K₂CO₃. Concurrently, methylation of 2c in the presence of ⁿBu₄NCl afforded tridentate Ir(κ³-L3HMe)Cl₃ (4) and, next, can be converted to tetradentate Ir(κ⁴-L3Me)Cl₂ (5) by further cyclometalation and HCl elimination in refluxing diethylene glycol monoethyl ether solution The Ir(III) complexes 3a, 4, and 5 were unambiguously identified using spectroscopic methods, together with single-crystal x-ray structural analyses on Ir(III) derivatives 3a, 4, and 5. Their photophys. and electrochem. properties were also investigated and compared with results from theor. studies. In the experiment, the researchers used many compounds, for example, 2-Bromo-6-(2-methyl-1,3-dioxolan-2-yl)pyridine (cas: 49669-14-9Computed Properties of C9H10BrNO2).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts