Tag: M.W=550-600

Ye, Liwei published the artcileAn Efficient precatalyst approach for synthesis of thiazole-containing conjugated polymers via cu-catalyzed direct arylation polymerization (Cu-DArP), Recommanded Product: Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), the publication is ACS Macro Letters (2020), 9(10), 1446-1451, database is CAplus and MEDLINE.

Over the past decade, direct arylation polymerization (DArP) has emerged as a facile and sustainable methodol. for the synthesis of conjugated polymers. Recently, we developed Cu-catalyzed DArP (Cu-DArP) as a low-cost, Pd-free synthetic pathway, which enables conjugated polymers to be synthesized with high mol. weights and minimization of defects. However, the lack of study on the use of Cu-precatalysts in small-mol. direct arylation poses significant limitations for Cu-DArP to potentially overtake conventional Pd-catalyzed methodol., such as the low solubility and stability of the previously employed CuI. Therefore, in this report, we decide to explore the utility of a well-defined, easy-to-prepare, highly soluble, and stable precatalyst, Cu(phen)(PPh₃)Br, as an alternative to the CuI, 1,10-phenanthroline catalytic system previously used for Cu-DArP. Herein, we report a drastic improvement of Cu-DArP methodol. for the synthesis of 5,5′-bithiazole (5-BTz)-based conjugated polymers enabled by an efficient precatalyst approach, affording polymers with good M_n (up to 16.5 kDa) and excellent yields (up to 79%). ¹H NMR studies reveal the exclusion of homocoupling defects, which further verifies the excellent stability of Cu(phen)(PPh₃)Br compared to CuI. Furthermore, we were able to decrease the catalyst loading from 15 mol % to only 5 mol % (M_n of 11.8 kDa, 64% yield), which is unprecedented when aryl bromides are employed for Cu-DArP. Significantly, 5-BTz was shown to be inactive under various of Pd-DArP conditions, which demonstrates the high compatibility of Cu-DArP as the only pathway for the C-H activation of the 5-BTz unit and a clear case demonstrating an advantage of Cu-DArP relative to Pd-DArP.

ACS Macro Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C6H12Br2, Recommanded Product: Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I).

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Pal, Rammyani published the artcileEfficient synthesis of 1,4-disubstituted triazolyl N-carboxamides via a simple and convenient MCR using basic alumina as solid support, Application of Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), the publication is Tetrahedron Letters (2013), 54(41), 5642-5646, database is CAplus.

A microwave assisted green protocol for the synthesis of 1,4-disubstituted triazolyl N-carboxamides was explored using basic alumina as solid support. The method allows domino Ullmann-type reaction, Click reaction and formation of ester or amide linkages in a single reaction vessel using Cu(phen)(PPh₃)Br and CMPA as catalyst and basic alumina as solid support in high yield. The protocol did not require addition of any external ligands or base. The method was also found to be equally good for the synthesis of bis triazole adducts.

Tetrahedron Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Application of Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I).

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chatterjee, Nivedita published the artcileAn approach toward the syntheses of triazolo benzoxazines, triazolo quinoxalines, triazolo benzodiazepines, triazolo benzoxazepines, and triazolo benzothiazines via a simple and convenient protocol using basic alumina as solid support, Category: bromides-buliding-blocks, the publication is Tetrahedron Letters (2014), 55(14), 2261-2265, database is CAplus.

A microwave-assisted green protocol for the syntheses of triazole-fused benzoxazines, benzoxazepines, quinoxalines, and benzothiazines I (R = aryl, 3-pyridyl; X = O, CO₂, NAc, NPh, S, CONH) was investigated using basic alumina as solid support. The one-pot reaction was carried out using Cu(phen)(PPh₃)Br as a catalyst. The protocol did not require the use of any addnl. ligands, base or the use of expensive and toxic palladium complexes.

Tetrahedron Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Das, Biswanath published the artcileCopper-catalyzed coupling of imidazoles and pyrazoles with 1,1-dibromo-1-alkenes: a distinct approach for direct N-alkynylation of heteroarenes, SDS of cas: 25753-84-8, the publication is Tetrahedron Letters (2011), 52(48), 6497-6500, database is CAplus.

The direct N-alkynylation of heteroarenes, imidazoles, and pyrazoles with 1,1-dibromo-1-alkene has been carried out using [Cu(Phen)PPh₃Br] as catalyst and Cs₂CO₃ in DMSO at 80°. The products are formed in good to high yields (66-85%) within 3 h and the target compounds thus formed included 1-(2-phenylethynyl)-1H-benzimidazole, 1-(2-phenylethynyl)-1H-imidazole, 1-(2-phenylethynyl)-1H-pyrazole derivatives No side products could be detected.

Tetrahedron Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, SDS of cas: 25753-84-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Bates, Craig G. published the artcileSynthesis of 2-Arylbenzo[b]furans via Copper(I)-Catalyzed Coupling of o-Iodophenols and Aryl Acetylenes, Computed Properties of 25753-84-8, the publication is Organic Letters (2002), 4(26), 4727-4729, database is CAplus and MEDLINE.

We report a copper(I)-catalyzed procedure for the synthesis of 2-arylbenzo[b]furans. This protocol can be used to synthesize a variety of 2-arylbenzo[b]furans in good to excellent yields. This method can tolerate a variety of functional groups, does not require the use of expensive additives, and is palladium-free.

Organic Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Computed Properties of 25753-84-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Bates, Craig G. published the artcileCopper-Catalyzed Synthesis of Vinyl Sulfides, Recommanded Product: Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), the publication is Organic Letters (2004), 6(26), 5005-5008, database is CAplus and MEDLINE.

We report a method for the synthesis of vinyl sulfides using the soluble copper(I) catalyst [Cu(phen)(PPh₃)₂]NO₃. The desired vinyl sulfides are obtained in good to excellent yields, with retention of stereochem. This protocol tolerates a wide variety of functional groups or substrates, is palladium-free, and does not require the use of expensive or air-sensitive additives.

Organic Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Recommanded Product: Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I).

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Jardine, F. H. published the artcileChemistry of copper(I) complexes. I. Halo-complexes, Related Products of bromides-buliding-blocks, the publication is Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical (1970), 238-40, database is CAplus.

A new method of preparing halocopper(I) complexes by using tertiary phosphines as ligands and reducing agents is described. The complexes prepared have been treated with various mono- and bidentate ligands and structures assigned to the derivatives on the basis of their phys. properties. The complexes prepared were: Cu X(PPh3)3, where X = F, Cl, Br; [Cu XPR3]4, where X = Cl, Br and R = Ph, X = Cl and R = Et; Cu X(PPh3)L, where X = Br, Cl, I and L = pyridine, γ- and β-picoline, 2,2′-bipyridyl, 1,10-phenanthroline (phen), or 2,2′-biquinolyl (biquin); CuI(PBu3)L and [CuIL]2, where L = phen or biquin; and [Cu(phen)2]I.

Journal of the Chemical Society [Section] A: Inorganic, Physical, Theoretical published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kumar, H. C. Sampath published the artcileSynthesis And Third-order Nonlinear Optical Studies of Four-Coordinated Copper(I) Complexes, HPLC of Formula: 25753-84-8, the publication is AIP Conference Proceedings (2011), 671-673, database is CAplus.

Three Cu(I) halide complexes [Cu(L)(PPh₃)X] (L = 1,10-phenanthroline, X = Cl (1), Br (2) and I (3), PPh₃ = triphenylphosphine) have been synthesized and characterized by spectroscopic techniques. Further structure of the complex 1 was confirmed by single crystal X-ray diffraction anal. The nonlinear optical properties of the complexes were investigated at 532 nm using single beam Z-scan technique with nanosecond laser pulses. The complexes showed strong optical limiting behavior due to effective three-photon absorption (3PA). The values of 3PA coefficients (γ) for 1, 2 and 3 were found to be 3.2×10^-24 m³/W², 6.0×10^-25 m³/W² and 1.2×10^-23 m³/W² resp., which are comparable to good optical limiting materials. These studies demonstrate that the Ligand copper coordinative bonds facilitate the polarization of the electronic π-system which optimizes the third-order NLO response in the reported complexes. (c) 2011 American Institute of Physics.

AIP Conference Proceedings published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, HPLC of Formula: 25753-84-8.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kelkar, Ashutosh A. published the artcileCopper-catalyzed amination of aryl halides: single-step synthesis of triarylamines, Formula: C30H24BrCuN2P, the publication is Tetrahedron Letters (2002), 43(40), 7143-7146, database is CAplus.

A simple and efficient methodol. for the synthesis of triarylamines in a single step has been demonstrated using a ligand-free CuI catalyst and potassium tert.-butoxide as the base. Use of chelating ligands leads to the formation of triarylamine derivatives selectively (95% yield) with high catalytic activity.

Tetrahedron Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Formula: C30H24BrCuN2P.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Jin, Qiong-Hua published the artcileBromo(1,10-phenanthroline-N,N’)(triphenylphosphine)copper(I), Category: bromides-buliding-blocks, the publication is Acta Crystallographica, Section C: Crystal Structure Communications (1999), C55(9), i, database is CAplus.

Crystals of the title compound are triclinic, space group P1̅, with a 8.409(4), b 9.327(4), c 18.144(7) Å, α 78.555(14), β 76.85(2), γ 70.50(2)°; Z = 2, d_c = 1.503; R = 0.037, R_w(F²) = 0.086 for 6237 reflections. The coordination polyhedron with Cu as the center atom is a distorted tetrahedron, with two N atoms of phenanthroline, one Br atom and one P atom of PPh₃ occupying the four corners.

Acta Crystallographica, Section C: Crystal Structure Communications published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Category: bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary