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, 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%.

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

Reference£º
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”

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

General procedure: To a dry and degassed dichloromethane (10mL) solution of 2,2?-dipyridylamine (1mmol) was added CuX (1mmol). The mixture was kept stirring under nitrogen at ambient temperature. After 1h, a yellow precipitate was formed. To the resulting suspension was added dropwise with stirring a solution of triphenylphosphine (1mmol) in dichloromethane (5mL). The mixture was stirred for another 4h, and then the solvent was evaporated to give a white or yellow residue. The solid residue was extracted with 10mL absolute dichloromethane under the nitrogen atmosphere while the extract was filtered and transferred to a nitrogen-protected flask. 10mL hexane was layered above the resulting solution afforded crystals of the complexes, which were washed with hexane.

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

Reference£º
Article; Wu, Fengshou; Tong, Hongbo; Wang, Kai; Wang, Zheng; Li, Zaoying; Zhu, Xunjin; Wong, Wai-Yeung; Wong, Wai-Kwok; Journal of Photochemistry and Photobiology A: Chemistry; vol. 318; (2016); p. 97 – 103;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7787-70-4,Copper(I) bromide,as a common compound, the synthetic 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 (75g, 372mmol) in dimethyl malonate (900mL, 20 equivalents) was degassed with nitrogen for 15min. Copper (I) bromide (5.4g, 37mmol) was added in one portion. Sodium methoxide (48.3g, 894mmol) was added in one portion to the solution while stirring and the contents exothermed to 48C. Fifteen minutes later, the contents were heated to 70C for 24hrs. The reaction was complete by nmr. Water (900mL) was added to the cooled reaction followed by hexanes (900mL). The aqueous layer was separated, toluene (900mL) added, the solution filtered through Celite, and the aqueous layer separated. Fresh toluene (1800mL) was added to the aqueous layer and the biphasic mixture acidified with 6 N aqueous HCI (90mL). A white precipitate formed and the contents were stirred for 18hrs. The product was filtered off and dried to give a white solid, 78.1g (70%, mp 153C). IR 2923, 2853, 1750, 1728, 1705, 1458, 1376, 1352, 1305, 1261 cm-1. 1H NMR (CD3)2SO delta8.37 (d, J = 2 Hz, 1H), 8.30 (d, J = 1Hz, 2H), 5.82 (s, 1H), 3.83 (s, 6H). 13C NMR (CD3)2SO delta168.0, 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 Copper(I) bromide 24593, acopper-catalyst compound, is more and more widely used in various fields.

Reference£º
Patent; PFIZER INC.; EP887345; (1998); A1;,
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

Cuprous iodide (0.198 g, 1.04 mmol)Adding to a solution of 3,4-bis(diphenylphosphino)-2,5-dimethylthiophene (dpmt) (0.500 g, 1.04 mmol) synthesized in Example 1 in 30 mL of CH2Cl2,The mixture was stirred at room temperature for 5 h. Filter the reaction mixture,The solvent was removed under reduced pressure to give a pale yellow powder.The powder was dissolved in dichloromethane and recrystallized to give 0.615 g of yellow crystals.That is, the complex 1 was found to have a yield of 88.1%.

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

Reference£º
Patent; Hubei University; Liu Li; Wei Qiong; (15 pag.)CN108997382; (2018); A;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

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

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.

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

Reference£º
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”

142-71-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Copper(II) acetate, cas is 142-71-2,the copper-catalyst compound, it is a common compound, a new synthetic route is introduced below.

Copper tetraphenyl porphyrin was synthesised by taking tetra phenyl porphyrin[H2(TPP)]16(500mg) in chloroform(100ml).Copper(II) acetate(200mg) in glacial aceticacid(50ml) was added to the above solution andthe mixture was refluxed for 2hrs. The contents wereconcentrated to a volume of about 50-60ml andcooled to room temperature which resulted in crudecopper-tetraphenyl porphyrin Cu(TPP) (about450mg). The crude product was purified by columnchromatography using neutral alumina andchloroform as eluent. On elution the unreactedtetraphenyl porphyrin was eluted out first, followedby pure Cu(TPP). The chloroform fraction containingCu(TPP) was concentrated to obtain pure crystalsof Cu(TPP)[2]. The formation of Cu(TPP) wasmonitored by UV-visible spectroscopy which givepeaks-around 580, 541 and 417nm respectivelyconfirming the formation of Cu(TPP) (yield=400mg).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of Copper(II) acetate, 142-71-2

Reference£º
Article; Raikwar, Kalpana; Oriental Journal of Chemistry; vol. 31; 2; (2015); p. 1195 – 1200;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

6046-93-1, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Copper(II) acetate hydrate, cas is 6046-93-1,the copper-catalyst compound, it is a common compound, a new synthetic route is introduced below.

meso-Tetraphenylporphyrin (TPP)(2 g, 3.25 mmol) was dissolved in CH2Cl2 (160 mL) and methanol (50 mL). Cu(OAc)2¡¤H2O (1.2 g,5.85 mmol) was added and the mixture was heated to reflux for 2 h until all starting material wasconsumed (TLC, UV-vis). Solvents were evaporated to give a red-purple residue that was filteredthrough a short plug of silica. After filtration, the product 3 was obtained as a dark purple sparklingsolid (2.2 g, 3.25 mmol, 99%)

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of Copper(II) acetate hydrate, 6046-93-1

Reference£º
Article; Blom, Magnus; Norrehed, Sara; Andersson, Claes-Henrik; Huang, Hao; Light, Mark E.; Bergquist, Jonas; Grennberg, Helena; Gogoll, Adolf; Molecules; vol. 21; 1; (2016);,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

142-71-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Copper(II) acetate, cas is 142-71-2,the copper-catalyst compound, it is a common compound, a new synthetic route is introduced below.

General procedure: The reactions of complexing between porphyrins and copper acetate were studied by means of spectrophotometry in the range of 293-318 K. The change in temperature during the experiment did not exceed¡À0.1 K.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of Copper(II) acetate, 142-71-2

Reference£º
Article; Pukhovskaya; Nam, Dao Tkhe; Fien, Chan Ding; Domanina; Ivanova, Yu. B.; Semeikin; Russian Journal of Physical Chemistry; vol. 91; 9; (2017); p. 1692 – 1702; Zh. Fiz. Khim.; vol. 91; 9; (2017); p. 1508 – 1519,12;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7787-70-4,Copper(I) bromide,as a common compound, the synthetic route is as follows.

7787-70-4, General procedure: A mixture of CuCl (19.6mg, 0.2mmol) and dppb (89.3mg, 0.2mmol) with an excess of batho (66.5mg, 0.2mmol) were dissolved in CH2Cl2 (5mL) and 17 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.

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

Reference£º
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”

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

To a Schlenk flask containing deoxygenated absolute ethanol (50 mL) was added in the following order, the CuBr (0.19 mmol, 0.027 g) and the ligand (L) (0.38 mmol, 0.10 g). The resulting solution was stirred at room temperature for 14 h. The solution was concentrated and a white precipitate appeared. The solid obtained was filtered off, and washed with diethyl ether (5 mL) under anaerobic conditions and dried under vacuum. 5: (Yield. 82%). Anal. Calc. for C30H28CuN8O2 (596.14 amu): C, 53.30; H, 4.17; N, 16.57. Found: C, 53.56; H, 4.27; N, 16.46%. Conductivity (Omega-1 cm2 mol-1, 1.2 * 10-3 M in CH3OH): 90. IR: (KBr, cm-1): 3325 nu(O-H), 3075 nu(C-H)ar, 2941 nu(C-H)al, 1604-1566 (nu(C=C), nu(C=N))ar, 1464 (delta(C=C), delta(C=N))ar, 1098, 1086 delta(C-H)ar,ip, 765, 696 delta(C-H)ar,oop. 1H NMR: (DMSO-d6 solution, 250 MHz, 298 K) delta: 8.67/8.62 [1H/1H, d, 3J = 4.7 Hz, 3J = 4.8 Hz, Hortho/Hortho’], 8.52/8.08 [1H/1H, t, 3J = 7.3 Hz, 3J = 7.0 Hz, Hpara/Hpara’], 8.05/7.94 [1H/1H, d, 3J = 7.3 Hz, H4/H4′], 7.62 [1H, s, Hpz], 7.83/7.55 [1H/1H, m, Hmeta/Hmeta’], 4.54 [2H, t, 3J = 5.1 Hz, NCH2-CH2OH], 4.02 [2H, t, 3J = 5.1 Hz, NCH2-CH2OH], 4.02 [2H,t, 3J = 5.1 Hz, NCH2-CH2OH]. In this complex, the signal attributableto proton hydroxyl (OH) is not observed. 13C{1H] NMR:(DMSO-d6 solution, 63 MHz, 298 K) delta: 158.5/153.2 (Cortho/Cortho’),143.4/140.2 (Cpara/Cpara’), 129.3/127.2 (C4/C40), 126.1/123.4 (Cmeta/Cmeta’), 108.2 (Cpz), 64.5, (NCH2-CH2OH), 58.6 (NCH2-CH2OH)ppm. ESI(+)(m/z) (%) = 596 (100%) [Cu(L)2]+.

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

Reference£º
Article; Guerrero, Miguel; Calvet, Teresa; Font-Bardia, Merce; Pons, Josefina; Polyhedron; vol. 119; (2016); p. 555 – 562;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”