Category: 1448637-05-5

Hale, Dylan J. published the artcile(PSiP)Ni-Catalyzed (E)-Selective Semihydrogenation of Alkynes with Molecular Hydrogen, Application In Synthesis of 1448637-05-5, the publication is ACS Catalysis (2022), 12(1), 146-155, database is CAplus.

It was reported that the bis(phosphino)silyl Ni hydride complex (ⁱPr-PSiP^Ind)NiH, I is an effective pre-catalyst for the (E)-selective semihydrogenation of a broad range of diaryl alkynes and SiMe₃-protected terminal alkynes. Complex I exhibited this reactivity under mild conditions (1 atm H₂, 25-50°C, and 1-2.5 mol % Ni) to afford the corresponding (E)-alkenes with high selectivity. Stoichiometric experiments revealed that facile alkyne insertion and subsequent alkene isomerization led to the observed selectivity.

ACS Catalysis published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, Application In Synthesis of 1448637-05-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Zhijie published the artcileLigand-Directed Reticular Synthesis of Catalytically Active Missing Zirconium-Based Metal-Organic Frameworks, Product Details of C22H23BO4, the publication is Journal of the American Chemical Society (2019), 141(31), 12229-12235, database is CAplus and MEDLINE.

The ligand-directed reticular syntheses and isoreticular expansion of Zr-based metal-organic frameworks (Zr-MOFs) with the edge-transitive alb net from 12-connected hexagonal-prismatic Zr₆ nodes and 6-connected trigonal-prismatic linkers, i.e., microporous NU-1600, mesoporous NU-1601, and mesoporous NU-1602, are reported. These Zr-MOFs exhibit remarkable activities toward the destruction of a nerve agent (soman) and a nerve agent simulant (DMNP). Crystallog. data are given.

Journal of the American Chemical Society published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, Product Details of C22H23BO4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Feng, Pengju published the artcileAccess to a new class of synthetic building blocks via trifluoromethoxylation of pyridines and pyrimidines, SDS of cas: 1448637-05-5, the publication is Chemical Science (2016), 7(1), 424-429, database is CAplus and MEDLINE.

A scalable and operationally simple protocol for regioselective trifluoromethoxylation of a wide range of functionalized pyridines I [R = 5-Br-6-OMe, 6-(1H-Benzo[d]imidazol-1-yl), 6-(1H-pyrazol-1-yl), etc.; R¹ = OMe, Me; X = OH; Y = H] and pyrimidines II [R² = (2-(Thiazol-4-yl)-1H-benzo[d]imidazol-1-yl), 2-OMe, 4-Cl-3,5-(Me)₂-OC₆H₂, etc.; W = OH; Z = H] under mild reaction conditions is presented. The trifluoromethoxylated products I [X = H; Y = 2-OCF₃, 4-OCF₃] and II [W = H; Z = OCF₃] are useful scaffolds that can be further elaborated by amidation and palladium-catalyzed cross coupling reactions. Mechanistic studies suggest that a radical O-trifluoromethylation followed by the OCF₃ -migration reaction pathway is operable. The unique properties of the OCF₃ group and the ubiquity of pyridine and pyrimidine in biol. active mols. and functional materials, trifluoromethoxylated pyridines I [X = H; Y = 2-OCF₃, 4-OCF₃] and pyrimidines II [W = H; Z = OCF₃] could serve as valuable building blocks for the discovery and development of new drugs, agrochems., and materials.

Chemical Science published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, SDS of cas: 1448637-05-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Penghao published the artcileAssembly of a Porous Supramolecular Polyknot from Rigid Trigonal Prismatic Building Blocks, COA of Formula: C22H23BO4, the publication is Journal of the American Chemical Society (2019), 141(33), 12998-13002, database is CAplus and MEDLINE.

Herein we report a hydrogen-bonded three-dimensional porous supramol. polyknot assembled from a rigid trigonal prismatic triptycene building block with six extended peripheral aryl-carboxyl groups. Within this superstructure, three arrays of undulated 2D rhombic subnets, which display an inclined polycatenation, are interconnected to give an unprecedented uninodal six-connected net with a point symbol of (3.4⁴.6¹⁰). Such an entanglement results in a trefoil knot motif, which, as the basic repeating unit, is fused and interlocked with itself three-dimensionally to afford a supramol. polyknot. This example highlights the ability of supramol. systems to form topol. complex architectures using geometrically simple building blocks.

Journal of the American Chemical Society published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, COA of Formula: C22H23BO4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Murugesan, Kathiravan published the artcileNickel-catalyzed stereodivergent synthesis of E- and Z-alkenes by hydrogenation of alkynes, Formula: C22H23BO4, the publication is ChemSusChem (2019), 12(14), 3363-3369, database is CAplus and MEDLINE.

A convenient protocol for stereodivergent hydrogenation of alkynes to E- and Z-alkenes R¹CH=CHR² [R¹ = Ph, 4-ClC₆H₄, 4-BrC₆H₄, etc.; R² = Et, 4-EtC₆H₄, 4-H₂NC₆H₄, etc.; stereo = E, Z] by using nickel catalysts was developed. Simple Ni(NO₃)₂·6H₂O as a catalyst precursor formed active nanoparticles, which were effective for the semihydrogenation of several alkynes with high selectivity for the Z-alkene (Z/>99:1). Upon addition of specific multidentate ligands (triphos, tetraphos), the resulting mol. catalysts were highly selective for the E-alkene products (E/Z>99:1). Mechanistic studies revealed that the Z-alkene-selective catalyst was heterogeneous whereas the E-alkene-selective catalyst was homogeneous. In the latter case, the alkyne was first hydrogenated to a Z-alkene, which was subsequently isomerized to the E-alkene. This proposal was supported by d. functional theory calculations

ChemSusChem published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, Formula: C22H23BO4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Murugesan, Kathiravan published the artcileMonodisperse nickel-nanoparticles for stereo- and chemoselective hydrogenation of alkynes to alkenes, Application of Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, the publication is Journal of Catalysis (2019), 372-377, database is CAplus.

The use of monosaccharides for the preparation of novel nickel nanoparticles (NP), which constitute selective hydrogenation catalysts has been reported. For example, immobilization of fructose and Ni(OAc)₂ on silica and subsequent pyrolysis under inert atm. produced graphitic shells encapsulated Ni-NP with uniform size and distribution. Interestingly, fructose acts as structure controlling compound to generate specific graphitic layers and the formation of monodisperse NP. These nanoparticles enable the hydrogenation of a series of functionalized and structurally diverse aromatic, heterocyclic and aliphatic alkynes R¹CCR² (R¹ = 1-hydroxyoct-8-yl, Ph, cyclohexyl, benzothiophen-3-yl, etc.; R² = H, Et, Ph, 1,3-dioxo-1,3-dihydro-2-benzofuran-5-yl, etc.) to the corresponding alkenes R¹CH=CHR² with excellent stereo- (98-100% Z-alkene formation) and chemoselectivity.

Journal of Catalysis published new progress about 1448637-05-5. 1448637-05-5 belongs to esters-buliding-blocks, auxiliary class Alkynyl,Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic Acids,Boronic acid and ester,, name is Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate, and the molecular formula is C22H23BO4, Application of Methyl 4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)benzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics