Category: copper-catalyst

13395-16-9, 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. Bis(acetylacetone)copper, cas is 13395-16-9,the copper-catalyst compound, it is a common compound, a new synthetic route is introduced below.

General procedure: In a typical synthesis of Cu40Ag60, 0.45mmol Cu(acac)2 and 0.35 Ag (ac) was mixed with 3mL of OAm, 1 mL of OAc and 11mL of ODE. All synthesis was conducted in a four-necked glass reactor allowing the precise temperature control and inert gas atmosphere under dark conditions. Firstly, the mixture was heated to 60C and kept at this temperature for 10min. Then, the mixture was heated to 180C and kept at this temperature for 30min before it was cooled down to room temperature. After cooling, the resultant reaction mixture was collected with hexane (2mL) and the NPs were separated by centrifugation (8500rpm, 12min) after adding isopropanol (40mL). To further purify the yielded CuAg NPs, the product was centrifuged (8500rpm, 12min) one more time with ethanol (40mL). Finally, the remaining product was dispersed in hexane (10mL) for further use. By using the same recipe and varying metal precursor amounts, two different compositions of CuAg NPs were synthesized. Reductive mixing of 0.3mmol Cu(acac)2 and 0.5 Ag(ac) resulted in Cu30Ag70 NPs and mixing 0.6mmol Cu(acac)2 with 0.4 Ag (ac) led to Cu60Ag40. Synthesis of Ag NPs was conducted with the same recipe without using Cu precursor.

The chemical industry reduces the impact on the environment during synthesis,13395-16-9,Bis(acetylacetone)copper,I believe this compound will play a more active role in future production and life.

Reference£º
Article; Balkan, Timucin; Kuecuekkececi, Hueseyin; Kaya, Sarp; Metin, Oender; Zarenezhad, Hamaneh; Journal of Alloys and Compounds; vol. 831; (2020);,
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 Bis(acetylacetone)copper, and cas is 13395-16-9, its synthesis route is as follows.

Under a nitrogen atmosphere, copper acetylacetonate (0.9 mmol) was dissolved in 25 mL of dichloromethane, followed by addition of 1,10-phenanthroline (0.9 mmol). The reaction solution was stirred at room temperature for 48 hours and then concentrated in vacuo. The resulting solid was washed with 25 mL of n-pentane and recrystallized with dichloromethane and n-pentane to obtain Catalyst 3. The method of the invention produces this compound in a yield of up to 75%

13395-16-9, In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles.,13395-16-9 ,Bis(acetylacetone)copper, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; Chinese Academy Of Sciences Lanzhou Chemical Physics Institute Suzhou Institute; Li Yuehui; Wang Hua; Dong Yanan; Ke Lisitian¡¤shanduofu; (20 pag.)CN108017557; (2018); 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(II) sulfate pentahydrate, and cas is 7758-99-8, its synthesis route is as follows.

Example 2828.1 28.2[0329] Methyl 4-bromo-3-(trifluoromethoxy)benzoate (28.2). To a solution of 4-amino-3-(trifluoromethoxy)benzoic acid (2.00 g, 9.10 mmol) in MeOH (25.0 mL), was slowly added HCl (1.0 mL, 1.0 M in ether) at room temperature. The resulting reaction mixture was stirred at room temperature overnight. Benzene (20 mL) was added, and the reaction was heated at reflux with a Dean-Stark trap to remove the half volume of the solvent. The rest of the solvent was then evaporated to give the product. MS (ESI) m/e = 235.9 [M+l]+, Calc’d for CgHeF3NOs, 235.1. The crude product was used in the next step without further purification. To an ice-cooled suspension of methyl 4-amino-3- (trifluoromethoxy)benzoate hydrogen chloride salt (8.60 g, 31.70 mmol) in 17.1 mL of water and concentrated HBr (48 %, 17.1 mL), was slowly added a prepared 2.5 M solution of sodium nitrite (2.20 g in 12.7 mL) at 00C. The reaction mixture was stirred at 0 0C for 10 minutes. Meanwhile, a solution OfCuSO4 (6.68 g) in 35 mL of water was heated and sodium bromide (6.52 g) was added. The solution became a green color, and a solution OfNa2SOs (2.80 g) in water (10 mL) was then added to it. The solution was cooled at 0 0C and washed with water (25 x 3 mL). The water was then decanted off. Concentrated HBr (16.7 mL) was added, and the solution became a purple color. The solution of CuBr was slowly added to the diazonium salt (prepared above) at 00C. After addition, the ice-bath was removed, and an oil-bath was placed under the reaction vessel. The reaction mixture was then heated to 600C for 15 minutes, at 80 0C for 15 minutes, and then at 1000C for 20 minutes. The reaction mixture was next cooled to room temperature and made basic with Na2CO3 to a pH 8. The aqueous solution was extracted with EtOAc (100 x 2 mL). The organic layer was washed with brine (25 mL) and dried with MgSO4. The solvent was removed to give the crude product 28.2. 1H NMR (CDCl3) delta 3.96 (s, 3H), 7.75 (d, J= 8.4 Hz5 1 H), 7.86 (d, J= 8.4 Hz, 1 H), 7.98 (s, IH).

7758-99-8, In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles.,7758-99-8 ,Copper(II) sulfate pentahydrate, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; AMGEN INC.; WO2008/30520; (2008); A1;,
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 [1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene]copper chloride, and cas is 578743-87-0, its synthesis route is as follows.,578743-87-0

In a dry double-mouth bottle to place Ir – 2 (0.0796 g, 0.1 mmol), CuClNHC (0.0488 g, 0.1 mmol), vacuum pumping and nitrogen cycle three times, then the nitrogen flow by adding 10 ml ethanol, stirring reflux reaction for 4 hours, cooling to room temperature, then added potassium hexafluorophosphate (0.184 g, 1 mmol), stirring at the room temperature reaction 2 hours, filtered, concentrated filtrate, ethanol: dichloromethane=1:10 column, get the orange solid 0.069 g, and the yield is 50%.

With the complex challenges of chemical substances, we look forward to future research findings about [1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene]copper chloride

Reference£º
Patent; Jiangsu University Of Science And Technology; Shi Chao; Li Qiuxia; Zhang Xinghua; (24 pag.)CN108690096; (2018); A;,
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”

The copper-catalyst compound, cas is 34946-82-2 name is Copper(II) trifluoromethanesulfonate, mainly used in chemical industry, its synthesis route is as follows.,34946-82-2

Tert-leucine phosphinoazomethinylate potassium salt (100 mg, 0.23 mmol, 1 eq.) and copper bis-triflate Cu(OTf)2 (114 mg, 0.23 mmol, 1 eq.) are placed in a round-bottom flask. Anhydrous THF is then added (9 mL, 40 mL per mmol). The reaction mixture is agitated at room temperature for 1 hour. The solvent is evaporated and the product is dried under reduced pressure. A green powder is obtained (210 mg, 98%).

With the rapid development of chemical substances, we look forward to future research findings about 34946-82-2

Reference£º
Patent; Mauduit, Marc; Rix, Diane; Crevisy, Christophe; Wencel, Joanna; US2010/267956; (2010); A1;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The copper-catalyst compound, cas is 34946-82-2 name is Copper(II) trifluoromethanesulfonate, mainly used in chemical industry, its synthesis route is as follows.,34946-82-2

To a solution of 2.00 g (4.82 mmol) of the above ieri-butyl ester in dimethylsulfoxide (15 mL) is added 1.10 mL (10.1 mmol) of dimethylethylenediamine followed by 0.983 g (9.64 mmol) of sodium methanesulfinate, and 1.74 g (4.82 mmol) of copper (II) triflate. The mixture is heated at 130 C under argon for 2 hours. The mixture is cooled to room temperature and diluted with water causing a solid to precipitate from solution. The formed solid is collected by filtration, washed with water, and dried on the filter pad. The residue is purified by flash silica gel chromatography to give 1.03 g (52.0%) of (5′- methanesulfonyl-3′-nitro-3,4,5,6-tetrahydro-2H-[l,2′]bipyridinyl-4-ylmethyl)-carbamic acid ie/ -butyl ester as a brown resin.

As the rapid development of chemical substances, we look forward to future research findings about 34946-82-2

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; GINN, John David; SORCEK, Ronald John; TURNER, Michael Robert; WU, Di; WU, Frank; WO2011/84985; (2011); A1;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

The copper-catalyst compound, cas is 34946-82-2 name is Copper(II) trifluoromethanesulfonate, mainly used in chemical industry, its synthesis route is as follows.,34946-82-2

A saturated solution of Cu(OTf)2 in n-butanol was addeddrop by drop to a solution of ligand L5 (40 mg, 0.16 mmol) in n-butanol (3 mL). Diethyl ether was placed on top of theblue butanol layer. After several weeks, deep blue crystalplatelets separated which were isolated by filtration withsuction, washed with a small volume of diethyl ether anddried at air. Yield: 64 mg (91); M.p. 271-275C. – IR (KBr): = 3322 br, 3154 w br, 3063 w, 1641 m, 1613 s, 1453 m, 1284vs, 1256 vs, 1225 vs, 1167 s, 1032 vs, 759 m, 700 s, 639 vs,576 m, 518 m cm-1. – Anal. for C28H30CuF6N10O6S2 (844.27):calcd. C 39.83, H 3.58, N 16.59; found C 40.07, H 3.74, N 16.16.

As the rapid development of chemical substances, we look forward to future research findings about 34946-82-2

Reference£º
Article; Schroeder, Sven; Frey, Wolfgang; Maas, Gerhard; Zeitschrift fur Naturforschung, B: Chemical Sciences; vol. 71; 6; (2016); p. 683 – 696;,
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”

The copper-catalyst compound, name is Copper(II) trifluoromethanesulfonate,cas is 34946-82-2, mainly used in chemical industry, its synthesis route is as follows.,34946-82-2

The molar ratio of Cu (CF3SO3) 2 and 4- (3- (4H-1,2,4-triazol-4-yl) phenyl) -4H-1,2,4-triazole) (L)For 1: 1;L (0.0424 g, 0.2 mmol), Cu (CF3SO3) 2 (0.0691 g, 0.2 mmol), H2O (6 mL)CH3CN (4 mL), water heat 100 oC three days later slowly to room temperature.After the opening, there are yellow rod-like crystals suitable for X-ray single crystal diffraction analysis. Yield: 35% (based on L calculation).

As the rapid development of chemical substances, we look forward to future research findings about 34946-82-2

Reference£º
Patent; Tianjin Normal University; Wang, Ying; (11 pag.)CN104557984; (2017); B;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”