Tag: M.W:100-200

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, 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.

The synthetic route of 7787-70-4 has been constantly updated, and we look forward to future research findings.

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”

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

Copper bromide (2.223 g, 10.00 mmols) was added to 2-pyridone (1.936 g, 20.38 mmols) dissolved in 10 mL THF, 3 mL of water, and 0.859 g (10.6 mmol) concentrated HBr (?9 M). Dark crystals formed in solution after one week. The product was isolated by vacuum filtration, washed with cold THF, and air-dried to yield 3.41 g (82%) of brown crystals. Single crystals (brown prisms) were obtained by recrystallization in THF/water (10:3). IR (KBr): 3241m, 3150m, 3082m, 2936m (nu N-H), 1638s/1621s (C=O) 1586s, 1536s, 1466m, 1374s, 1277m, 1216m, 1156m, 1091m, 997m, 859m, 775s, 718m, 593m, 539m, 511m cm-1. Anal. Calc. for C20H20N4O4Cu2Br4: C, 29.04; H, 2.44; N, 6.77. Found: C, 28.79; H, 1.76; N, 6.60%.

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

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Article; Shortsleeves, Kelley C.; Turnbull, Mark M.; Seith, Christopher B.; Tripodakis, Emilia N.; Xiao, Fan; Landee, Christopher P.; Dawe, Louise N.; Garrett, David; De Delgado, Graciela Diaz; Foxman, Bruce M.; Polyhedron; vol. 64; (2013); p. 110 – 121;,
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

Example 1 2-(Carboxy-5-nitro-phenyl)malonic acid dimethyl ester A solution of 2-chloro-4-nitrobenzoic acid (75 g, 372 mmol) in dimethyl malonate (900 mL, 20 equivalents) was degassed with nitrogen for 15 min. Copper (I) bromide (5.4 g, 37 mmol) was added in one portion. Sodium methoxide (48.3 g, 894 mmol) was added in one portion to the solution while stirring and the contents exothermed to 48 C. Fifteen minutes later, the contents were heated to 70 C. for 24 hrs. The reaction was complete by nmr. Water (900 mL) was added to the cooled reaction followed by hexanes (900 mL). The aqueous layer was separated, toluene (900 mL) added, the solution filtered through Celite, and the aqueous layer separated. Fresh toluene (1800 mL) was added to the aqueous layer and the biphasic mixture acidified with 6 N aqueous HCl (90 mL). A white precipitate formed and the contents were stirred for 18 hrs. The product was filtered off and dried to give a white solid, 78.1 g (70%, mp 153 C.). IR 2923, 2853, 1750, 1728, 1705, 1458, 1376, 1352, 1305, 1261 cm-1.1 H NMR (CD3)2 SO delta8.37(d,J=2 Hz, 1H), 8.30 (d,J=1 Hz,2H), 5.82(s, 1H),3.83 (s,6H).13 C NMR (CD3)2 SOdelta168.0, 167.3, 149.4, 137.1, 135.8, 132.5, 125.4, 123.7, 54.5, 53.4.Anal. Calcd for C11 H10 NO8:C,48.49; H,3.73; N, 4.71. Found:C, 48.27; H,3.72; N, 4.76.

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

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Patent; Pfizer Inc; US5968950; (1999); 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

General procedure: 0.028g (0.283mmol) of CuCl was added to 0.220g (0.133mmol) of [PPh4]2[1] dissolved in 20mL of MeCN solution. After stirring the resultant solution for 1hat RT, the yellowish brown solution formed. The solution was filtered, and the solvent was removed in vacuo. The precipitate was washed with Et2O and MeOH and extracted with CH2Cl2 which was then recrystallized with Et2O/MeOH/CH2Cl2 to give [PPh4]2[5a] (0.110g, 0.064mmol, 96% based on Se). Similarly, under the same reaction conditions, using CuBr and CuI, we have isolated a yellowish brown solid of [PPh4]2[5b] (98% based on Se) and [PPh4]2[5c] (71% based on Se), respectively, upon crystallization from Et2O/MeOH/CH2Cl2. [PPN]2[5a] and [PPN]2[5c] were synthesized according to a similar procedure.

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

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Article; Shieh, Minghuey; Miu, Chia-Yeh; Liu, Yu-Hsin; Chu, Yen-Yi; Hsing, Kai-Jieah; Chiu, Jung-I; Lee, Chung-Feng; Journal of Organometallic Chemistry; vol. 815-816; (2016); p. 74 – 83;,
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

Copper bromide (0.079 g, 0.55 mmol) was added to 30 mL of ppdq (0.200 g, 0.55 mmol) In a solution of CH2Cl2, the mixture was stirred at room temperature to form a red suspension, the reaction mixture was filtered, and the solvent was removed under reduced pressure. A red powder was obtained which was recrystallized from CH2Cl2 to give red crystals: 0.238 g, 85.3%.

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

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Patent; Hubei University; Liu Li; Guo Bangke; (13 pag.)CN109970769; (2019); A;,
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: C8H14ClNO132,mainly used in chemical industry, its synthesis route is as follows.,7787-70-4

A mixture of CuBr (28.7mg, 0.2mmol) and dppp (82.5mg, 0.2mmol) with an excess of batho (66.5mg, 0.2mmol) were dissolved in CH2Cl2 (5mL) and CH3OH (5mL) solution, stirred at room temperature for 6h. The insoluble residues were removed by filtration, and the filtrate was evaporated slowly at room temperature to yield yellow crystalline products. Yield: 80%. Anal. Calc. for C53H50BrCuN2O2P2: C, 66.84; H, 5.29; N, 2.94. Found: C, 66.97; H, 5.15; N, 2.88%. IR (KBr disc, cm-1): 3378s, 3048w, 2858w, 2580w, 1616w, 1556m, 1515m, 1433s, 1414m, 1229m, 1026s, 998w, 767m, 740s, 698vs, 513s, 482m. 1H NMR (600MHz, CDCl3, 298K): delta 7.87-8.98 (d, 6H, batho CH), 7.56-7.68 (m, 10H, batho CH), 7.41-7.24 (m, 20H, dppp CH), 2.91-2.81 (m, 4H, CH2), 2.78-2.63 (m, 2H, CH2); 31P NMR (400MHz, CDCl3, 298K): -12.25, -14.84.

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

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Article; Yu, Xiao; Fan, Weiwei; Wang, Guo; Lin, Sen; Li, Zhongfeng; Liu, Min; Yang, Yuping; Xin, Xiulan; Jin, Qionghua; Polyhedron; vol. 157; (2019); p. 301 – 309;,
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

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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”

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”

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

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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: 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

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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”