Month: September 2020

7787-70-4, Copper(I) bromide is a copper-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7787-70-4, A dichloromethane (2mL) solution of macrocycle 1 (12mg, 0.05mmol) was allowed to diffuse slowly through a solution of copper bromide (7.2mg, 0.05mmol) in acetonitrile (2mL) at-60C. Slow evaporation of the orange solution at room temperature afforded compound 5, in a quantitative yield, as colorless crystals suitable for an X-ray diffraction analysis. 1H NMR (CDCl3, 300MHz): delta 5.30-5.20 (m, 2H, =CH2), 4.60-2.20 (m, 16H, CH2). BrC10CuH18O2S2 (377.83): calcd C 31.79, H, 4.80; found: C 31.49, H, 4.52.

7787-70-4 Copper(I) bromide 24593, acopper-catalyst compound, is more and more widely used in various fields.

Reference£º
Article; Carel, Guillaume; Madec, David; Saponar, Alina; Saffon, Nathalie; Nemes, Gabriela; Rima, Ghassoub; Castel, Annie; Journal of Organometallic Chemistry; vol. 755; (2014); p. 72 – 77;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO233,mainly used in chemical industry, its synthesis route is as follows.,7787-70-4

CuBr2 (12.5 mg, 0.056 mmol) dissolved in 14 mL absolute ethyl alcohol was slowly dropwise added into a dichloromethane solution(10 mL) containing 20.2 mg (0.05 mmol) of deebq at ambient temperature. The mixture was stirred for 1 min to give a dark red-brown solution. Then, four droplets of hydrobromic acid together with five droplets of hydrogen dioxide were in turn added to it. After stirring for another 1 min, the mixture was abruptly transformed into pale red-brown and allowed standing 24 h. The achieved crystal was collected by filtration, washed with EtOH and dried in vacuum. Yield: 92%. Anal. Calc. for C48H40N4O8Cu2-Br4: C, 46.21; H, 3.23; N, 4.49. Found: C, 46.14; H, 3.04; N, 4.17% .IR (KBr pellet, cm-1): 3067(w) for the nuC-H of the quinolyl ring; 2981(m), 2933(w), 2902(w), 2872(w) for the nuC-H of -CH3 and -CH2; 1729(s) for the nuC=O of the -COOCH2CH3; 1589 (m),1512 (m), 1459 (m) for the nuC=C and mC=N of the quinolyl ring;1265(s), 1209(s), 1102(m) for the nuC-O-C of the -COOCH2CH3.

With the complex challenges of chemical substances, we look forward to future research findings about Copper(I) bromide,belong copper-catalyst compound

Reference£º
Article; Yang, Hao; Sun, Xiao-Mei; Ren, Xiao-Ming; Polyhedron; vol. 83; (2014); p. 24 – 29;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO151,mainly used in chemical industry, its synthesis route is as follows.,34946-82-2

A methanolic solution of ligand trans-cyclohexane-1,2-diamine(0.1142 g, 1 mmol) was added dropwise to a clear solution ofCopper(II) trifluoromethanesulfonate (0.1808 g, 0.5 mmol) inmethanol (10 mL). The resultant solution was stirred at roomtemperature for 6 h to produce a dark blue coloured solution. Thediffraction quality crystals of the titled complex were obtaineddirectly by slow evaporation of the deep bluish methanolic solutionat room temperature. Yield: 0.272 g, 75%, m.p: 258 C, Anal. Calc. forC14H32CuF6N4O8S2: C, 26.86; H, 5.15; N, 8.95. Found: C, 26.54; H,5.32, N, 8.78. Selected FT-IR (KBr), cm1: n(NH2) 3332e3279, n(CH2)2967e2861, n(OH) 3463, n(CueN) 628, n(CueO) 514. UVeVis [lmax(nm), epsilon (L mol1 cm1)]: 243 (8940), 548 (89).

With the complex challenges of chemical substances, we look forward to future research findings about Copper(II) trifluoromethanesulfonate,belong copper-catalyst compound

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Article; Agrahari, Bhumika; Layek, Samaresh; Kumari, Shweta; Anuradha; Ganguly, Rakesh; Pathak, Devendra D.; Journal of Molecular Structure; vol. 1134; (2017); p. 85 – 90;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

7787-70-4, Copper(I) bromide is a copper-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7787-70-4, (a) Preparation of 1-(3,4-dimethoxyphenyl)indole-2-carboxylic acid ethyl ester 4-Bromoveratrole (8.8 g, 40 mmol), indole-2-carboxylic acid ethyl ester (1.9 g, 10 mmol), potassium carbonate (1.9 g), copper- (I) bromide (o.2 g), pyridine (2 ml) and nitrobenzene (10 ml) were stirred at 140 C. for 14 hours. After cooling to room temperature, the reaction mixture was applied onto a silica gel flash chromatography column (silica gel: 140 g). The column was subsequently eluted with toluene (500 ml), toluene/acetone (95:5, 500 ml) and toluene/acetone (90:10, 500 ml). 1-(3,4-Dimethoxyphenyl)indole-2-carboxylic acid ethyl ester was eluted with toluene/acetone (90:10) and gave colorless crystals upon evaporation of the solvent. The crystals were triturated with diisopropyl ether, collected by vacuum filtration and dried in the air. Yield: 3.0 g. (92% of theoretical yield) M.pt.: 126-128 C. Rf (toluene/acetone, 9:1)=0.53.

As the paragraph descriping shows that 7787-70-4 is playing an increasingly important role.

Reference£º
Patent; Shell Research Limited; US5399559; (1995); A;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

As a common heterocyclic compound, it belongs to copper-catalyst compound, name is Copper(I) bromide, and cas is 7787-70-4, its synthesis route is as follows.,7787-70-4

a. 2-(carboxy-5-nitro-phenyl)malonic acid dimethyl ester (2) A solution of 2-chloro-4-nitrobenzoic acid (75g, 372mmol) in dimethyl malonate (900mL) was sparged with nitrogen for 15 min. Sodium methoxide (48.3g, 894mmol) was added in one portion and the contents exothermed to 48C. Fifteen minutes later, copper (I) bromide (5.4g, 37mmol) was added in one portion and the contents heated to 70C for 24 hrs. The reaction was 70% complete by nmr, the contents heated to 85C for 5 hrs to completely consume the 2-chloro-4-nitrobenzoic. Water (900mL) was added to the cooled reaction followed by hexanes (900mL). The aqueous layer was separated, toluene (900mL) added, filtered through celite, and aqueous layer separated. Fresh toluene (1800mL) was added to the aqueous layer and the biphasic mixture acidified with 6N aqueous HCl (90mL). A white precipitate formed and the contents stirred for 18 hrs. The product was filtered off and dried to give a white solid (78.1g, 70%) mp=153C. 1H NMR (CD3)2SO delta 8.37 (d, J = 2 Hz, 1H), 8.30 (d, J = 1Hz, 2H), 5.82 (s, 1H), 3.83 (s, 6H). 13C NMR (CD3)2SO delta 168.0, 167.3, 149.4, 137.1, 135.8, 132.5, 125.4, 123.7, 54.5, 53.4. Anal. Calcd for C11H10NO8: C, 48.49; H, 3.73; N, 4.71. Found: C, 48.27; H, 3.72; N, 4.76.

7787-70-4 is used more and more widely, we look forward to future research findings about Copper(I) bromide

Reference£º
Patent; PFIZER INC.; EP1181954; (2002); A2;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper(I) bromide, cas is 7787-70-4, it is a common heterocyclic compound, the copper-catalyst compound, its synthesis route is as follows.,7787-70-4

General procedure: CuI (0.095 g, 0.05 mmol) and PPh3 (0.262 g, 0.10 mmol) in 10 ml of MeCN were stirred for 1 h at 80 C to get a clear solution. To the reaction mixture, a solution of Hnor (0.082 g, 0.05 mmol) in methanol (5 mL) was added dropwise and left on stirring for 4 h. Then the mixture was filtered, and a colorless clear solution was obtained, which was left for slow evaporation leading to crystallization at room temperature. After a few days white crystals were obtained that were suitable for a single-crystal X-ray diffraction analysis.

7787-70-4 is used more and more widely, we look forward to future research findings about Copper(I) bromide

Reference£º
Article; Khan, Rais Ahmad; Dielmann, Fabian; Liu, Xue; Hahn, F. Ekkehardt; Al-Farhan, Khalid; Alsalme, Ali; Reedijk, Jan; Polyhedron; vol. 111; (2016); p. 173 – 178;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper(II) trifluoromethanesulfonate, cas is 34946-82-2, it is a common heterocyclic compound, the copper-catalyst compound, its synthesis route is as follows.,34946-82-2

Copper(II) triflate (50.0 mg, 0.14 mmol) was dissolved in methanol (3 ml) and the ligand (42.8 mg, 0.07 mmol) added. The reaction mixture was stirred at r. t. for 16 h. Then the mixture was evaporated to dryness and the resulting green solid recrystallised from dichloromethane and pentane. 5: 23.6 mg, 34.0%. C42H37N5O8S2F6Cu¡¤2CH2Cl2: Anal. Calc. C, 43.16; H, 3.30; N, 5.59. Found: C, 42.72; H, 3.71; N, 5.87%. HR-MS: C40H36N5O263Cu Calc. 681.2239. Found: 681.2202 (100.0), C40H36N5O265Cu Calc. 683.2147. Found 683.2105 (65.1). IR: nunu [cm-1]=3066, 2962, 2870, 1657, 1598, 1535, 1484, 1454, 1265, 1172, 1109, 1032, 953, 756, 639. Magnetic susceptibility in CD2Cl2 (295 K): mueff=1.78muB.

34946-82-2 is used more and more widely, we look forward to future research findings about Copper(II) trifluoromethanesulfonate

Reference£º
Article; Sauer, Desiree C.; Wadepohl, Hubert; Polyhedron; vol. 81; (2014); p. 180 – 187;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper(I) bromide, cas is 7787-70-4, it is a common heterocyclic compound, the copper-catalyst compound, its synthesis route is as follows.,7787-70-4

Copper(I) bromide was treated with 3 equiv of triphenylphosphine in methanol. The mixture was stirred for 4-5 h, and the pale yellow solid was filtered off and dried. Yield of Cu(PPh3)3Br 90%.

With the rapid development of chemical substances, we look forward to future research findings about Copper(I) bromide

Reference£º
Article; Saeed; Larik; Jabeen; Mehfooz; Ghumro; El-Seedi; Ali; Channar; Ashraf; Russian Journal of General Chemistry; vol. 88; 3; (2018); p. 541 – 550;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Copper(I) bromide, cas is 7787-70-4, it is a common heterocyclic compound, the copper-catalyst compound, its synthesis route is as follows.,7787-70-4

General procedure: In a round bottom flask, copper(I) halide (0.1mmol, CuBr for 1 or CuI for 2) was dissolved in 2mL of MeCN. Under continuous stirring, a 5mL MeCN:EtOH (3:2) solution of HC(3-PhPz)3 (0.11mmol, 50mg) was added dropwise. The produced light brown solution was stirred at room temperature for 3h, then its volume was reduced by evaporation to ca. 2mL. Hexane (10mL) was added and the obtained precipitate was filtered off, recrystallized from a mixture of CH2Cl2 and hexane (1:1) to afford complexes 1 or 2 as colourless crystals. [CuBr(TpmPh)] (1): Yield (45.9mg) 78%. Elemental analysis calcd (%) for C28H22BrCuN6¡¤CH2Cl2: C 51.92, H 3.61, N 12.53; found: C 51.51, H 3.70, N 12.64. FTIR (KBr): nu (cm-1)=1532m, 1491 w, 1442m, 1391 w, 1342 w, 1324 w, 1299 w, 1268 w, 1242m, 1209m, 1095m, 1077m, 1038m, 798m, 756s, 688s. Far IR (CsI): nu (cm-1)=221m nu(Cu-Br). 1H NMR (300MHz, DMSO-d6, delta): 9.10 (s, 1H, HC(3-PhPz)3), 8.11 (br, 3H, 5-H-pz), 7.85 (br, 6H, o-H-Ph), 7.42 (br, 9H, m,p-H-Ph), 6.95 (br, 3H, 4-H-pz). 13C{1H} NMR (300MHz, DMSO-d6, delta): 152.14 (3-C-pz), 132.20 (Cquat-Ph), 131.82 (5-C-pz)), 128.76 (m-C-Ph), 128.32 (p-C-Ph), 125.53 (o-C-Ph), 104.57 (4-C-pz), 82.09 (HC(3-Phpz)3). ESI(+)MS in MeCN (m/z assignment, % intensity): 546 ({[HC(3-Phpz)3]Cu+MeCN}+, 100), 505 ({[HC(3-Phpz)3]Cu}+, 23).

As the rapid development of chemical substances, we look forward to future research findings about 7787-70-4

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Article; Mahmoud, Abdallah G.; Martins, Luisa M.D.R.S.; Guedes da Silva, M. Fatima C.; Pombeiro, Armando J.L.; Inorganica Chimica Acta; vol. 483; (2018); p. 371 – 378;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

A common heterocyclic compound, the copper-catalyst compound, name is Copper(I) bromide,cas is 7787-70-4, mainly used in chemical industry, its synthesis route is as follows.,7787-70-4

A mixture of CuBr (0.57g, 4mmol) and 2,9-dimethyl-1,10-phenanthroline (L3) (0.72g, 2mmol) in CH3CN (30ml) was stirred overnight under nitrogen atmosphere at room temperature. The copper complex was obtained as a brick-red solid in 90% yield.

As the rapid development of chemical substances, we look forward to future research findings about 7787-70-4

Reference£º
Article; Liang, Zhaoli; Wang, Fei; Chen, Pinhong; Liu, Guosheng; Journal of Fluorine Chemistry; vol. 167; (2014); p. 55 – 60;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”