Day: September 3, 2020

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO133,mainly used in chemical industry, its synthesis route is as follows.,14172-91-9

General procedure: Under the protection of nitrogen, 0.14 mmol of the corresponding 5,10,15,20-tetrakis(4-R-phenyl)porphyrin copper(II)complex was dissolved in 16 ml of CHCl3, to which 0.75 ml of DMFwas added with magnetic stirring. The solution was cooled to 0 Cin an ice bath, and then 0.56 ml of phosphoryl chloride (POCl3) wasslowly added within 20 min. The ice bath was removed and stirringwas continued at room temperature for 1 h, and the solution wascontinuously stirred and heated at 70 C for 24 h. Then 3.606 g ofNaAc and 14.4 ml of distilled water were added in an ice bath andstirring for another 1 h. After separation of the aqueous layer, theorganic layer was washed with 10 ml of distilled water for 3 times,then dried over anhydrous magnesium sulfate and filtered. Thesolvent was removed by rotary evaporation at low temperature toafford a crude product. The crude product was dissolved indichloromethane and subjected to column chromatography overneutral alumina with dichloromethane/petroleum ether (v/v 3:1)as the eluent. The third coloured bandwas collected and the solventwas removed by rotary evaporation to afford a purple powder.

With the complex challenges of chemical substances, we look forward to future research findings about 5,10,15,20-Tetraphenyl-21H,23H-porphine copper(II),belong copper-catalyst compound

Reference£º
Article; Wu, Zhen-Yi; Yang, Sheng-Yan; Journal of Molecular Structure; vol. 1188; (2019); p. 244 – 254;,
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 Cuprouschloride, and cas is 7758-89-6, its synthesis route is as follows.,7758-89-6

EXAMPLE 1 N2-(4-Bromophenyl)-5-trifluoromethyl-1,3-benzoxazol-2-amine 4-Bromophenyl isothiocyanate (1.667 g, 7.785 mmol) was added to a solution of 2-amino-4-trifluoromethylphenol (1.379 g, 7.785 mmol) in tetrahydrofuran (THF) (100 mL) and the reaction was stirred at room temperature for about 16 hours then at about 50 C. for about another 5 hours. Copper (I) chloride (0.771 g, 7.785 mmol) and triethylamine (1.08 mL, 7.785 mmol) were added, and the mixture was stirred at room temperature for about 72 hours and then at about 50 C. for about another 18 hours. Additional copper (I) chloride (0.385 g) was added and the reaction was stirred at about 60 C. for about another 2 hours. The reaction was concentrated under reduced pressure, dissolved in methanol (200 mL), filtered through a pad of diatomaceous earth and the solvent removed in vacuo to afford N2-(4-bromophenyl)-5-trifluoromethyl-1,3-benzoxazol-2-amine as a brown solid (3.90 g, 140% of theory); RP-HPLC Rt 17.627 min, 77% purity (5% to 85% acetonitrile/0.1M aqueous ammonium acetate, buffered to pH 4.5, over 20 min at 1 mL/min; lambda=254 nm; Waters Deltapak C18, 300 A, 5 mum, 150*3.9 mm column); and m/z 354.9 and 356.9 (M-H)-.

With the complex challenges of chemical substances, we look forward to future research findings about 7758-89-6,belong copper-catalyst compound

Reference£º
Patent; Wishart, Neil; Rudolph, Alena; Ritter, Kurt; US2003/109714; (2003); 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 Copper(II) sulfate pentahydrate, and cas is 7758-99-8, its synthesis route is as follows.,7758-99-8

18 g of copper sulphate and 6.75 g of sodium bromide were added to 150 ML of D. M water in a 3 necked round bottom flask. The contents of flask were heated to 76-78 C to obtain a clear solution. 6g of sodium metabisulphite was then added to it in portions and stirred for 15 min. The reaction mixture was cooled to 30 2 C. CuBr solid was filtered. To 150 g of compound of formula 2 was added 1.5 1 of acetone and 600 ml of methanol. The contents of the flask were cooled to 18-20 C. 245 ml of aqueous HBR was added to the above reaction mixture at 18-20 C in a single charge. Cool the contents of the flask to 0-2 C. 120ML of 50% w/v aqueous sodium nitrite solution was added slowly to the reaction mixture by maintaining the temperature between 0-2 C, over a period of 30 minutes. The reaction mixture was maintained for 15 minutes at 0-2 C. The temperature was raised to 20-22 C. A solution of 246g of acrylamide in 900ML of acetone was added at 22-23 C in single charge. The reaction mixture was stirred for 10 minutes at 23-24 C, 4. 6g of cuprous bromide was added in a single charge under vigorous stirring and the reaction mixture maintained for 2 hours at 30-35 C. After completion of the reaction, acetone and methanol were. distilled off completely to obtain thick liquid mass. A solution of 150 g of sodium bicarbonate in 3.0 1 of D. M water was prepared. 600ML of hexane was added to it and stirred to get a clear biphasic solution. The reaction mixture was gradually quenched into above flask containing aqueous sodium bicarbonate and hexane solution over a period of 30 minutes at 23-35 C followed by stirring for 2 hours. The product was filtered and the product cake washed with D. M. Water followed by hexane and dried. The crude product obtained was suspended in water and stirred for 1 hour at 25-30 C. The product was filtered and cake washed with D. M. Water followed by hexane. The product thus obtained was suspended in hexane and stirred for 2 hours at 35- 40C. It was filtered and washed with hexane and dried to get compound of formula 3.

With the complex challenges of chemical substances, we look forward to future research findings about 7758-99-8,belong copper-catalyst compound

Reference£º
Patent; SUN PHARMACEUTICAL INDUSTRIES LIMITED; WO2004/108721; (2004); 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 Bis(acetylacetone)copper, and cas is 13395-16-9, its synthesis route is as follows.,13395-16-9

A yellow solution of H4L (0.3mmol, 0.068g) in MeOH (5mL) was added to a green solution of Cu(acac)2 (0.30mmol, 0.079g) in dmf (20mL) which was stirred under heating at ~90C. The resulting dark green solution was refluxed for 3h and after cooled at r.t. was layered with Et2O. X-ray quality blue crystals of 1¡¤MeOH were formed after 3weeks. The identity of the crystals was confirmed by unit cell determination (a=b=17.414(1), c=16.751(1) A, alpha=beta=gamma=90, V=5079A3). The crystals were filtered off and dried under vacuum. (Yield: 0.056g, ?65%). The solid was analyzed as solvent free. C44H52Cu4N4O16 requires: C, 46.07; H, 4.57; N, 4.88. Found: C, 45.88; H, 4.54; N, 4.85%. FT-IR (KBr pellets, cm-1): 3413(br,s), 2912(w), 2873(w), 2828(w), 1625(vs), 1603(s), 1543(s), 1473(s), 1448(s), 1399(m), 1385(m), 1338(m), 1300(vs), 1254(m), 1206(m), 1160(m), 1129(m), 1083(m), 1029(s), 980(w), 936(w), 915(m), 875(m), 770(s), 683(s), 633(m), 586(m), 489(m), 454(m).

With the complex challenges of chemical substances, we look forward to future research findings about 13395-16-9,belong copper-catalyst compound

Reference£º
Article; Lazarou, Katerina N.; Savvidou, Aikaterini; Raptopoulou, Catherine P.; Psycharis, Vassilis; Polyhedron; vol. 152; (2018); p. 125 – 137;,
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.14172-91-9,5,10,15,20-Tetraphenyl-21H,23H-porphine copper(II),as a common compound, the synthetic route is as follows.,14172-91-9

(a) N-Bromosuccinimide (0.0131 g, 0.0737 mmol) was added with stirring to a solution of 0.02 g (0.0296 mol) of complex 5 in 10 mL of chloroform and the reaction mixture was heated under reflux for 5 min. The mixture was cooled, water was added, the organic layer was separated, washed with water, dried with Na2SO4, concentrated, chromatographed on aluminum oxide (using hexane, chloroform-hexane 1 : 2, and then chloroform as eluent), and reprecipitated from ethanol. Yield 0.016 g (0.0212 mmol), 72%. (b) N-Bromosuccinimide (0.00788 g, 0.0444 mmol) was added with stirring to a solution of 0.02 g (0.0296 mmol) of complex 5 in a mixture of 10 mL of chloroform and 1 mL of DMF, the reaction mixture was kept at ambient temperature for 35 min. The mixture was treated similarly to method a. Yield 0.017 g (0.0225 mmol), 76%. (c) A mixture of 0.02 g (0.0288 mmol) of porphyrin 2 and 0.052 g (0.288 mmol) of Cu(OAc)2 was dissolved in 10 mL of DMF, the reaction mixture was heated to reflux, cooled, poured into water, solid NaCl was added, the precipitate was separated by filtration, washed with water, dried, and chromatographed on aluminum oxide using chloroform as an eluent. Yield 0.02 g (0.0265 mmol), 85%. MS (m/z (Irel, %)): 754 (56) [M]+; for C44H27N4BrCu calcd.: 755. IR (nu, cm-1): 2926 s, 2855 m nu(C-H, Ph), 1790 w, 1680 w, 1488 s nu(C=C, Ph), 1457 m nu(C=N), 1366 m, 1345 s nu(C-N), 1193 s, 1169 w, 1146 m, 1072 m delta(C-H, Ph), 1005 s nu(C-C), 861 s, 796 s gamma(C-H, pyrrole ring), 749 s, 702 s, 689 m gamma(C-H, Ph). For C44H27N4BrCu anal. calcd. (%): C, 69.98; N,7.42; H, 3.60; Br, 10.58. Found (%): C, 69.72; N, 7.30; H, 3.65; Br 9.67.

As the paragraph descriping shows that 14172-91-9 is playing an increasingly important role.

Reference£º
Article; Chizhova; Shinkarenko; Zav?yalov; Mamardashvili, N. Zh.; Russian Journal of Inorganic Chemistry; vol. 63; 6; (2018); p. 732 – 735; Zh. Neorg. Khim.; vol. 63; 6; (2018); p. 695 – 699,5;,
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.,13395-16-9

General procedure: The monodisperse CuPd alloy NPs with composition controlwere synthesized by using a modified version of our estab-lished recipe for the CoPd alloy NPs [14]. In a typical synthesis of Cu75Pd25NPs, copper(II) acetylacetonate (0.35 mmol, 90 mg)and palladium(II) acetylacetonate (0.1 mmol, 31 mg) were dis-solved in 3 mL of OAm in a 10 mL of glass vial. In a four-necked glass reactor that allows to study under inert atmosphere,200 mg of MB was dissolved in 3 mL of OAm and 7 mL of 1-octadecene at 80C under magnetic stirring. Next, the metal precursor mixture was quickly injected into the reactor under argon environment. The reaction was then proceed for 1 h before cooled down to room temperature. Then, the colloidal NPs mixture was transferred into two separate centrifuge tubeand acetone/ethanol (v/v = 7/3) was added into the tubes. TheNP product was separated by centrifugation at 8500 rpm for10 min.

With the complex challenges of chemical substances, we look forward to future research findings about Bis(acetylacetone)copper

Reference£º
Article; Guengoermez, Kuebra; Metin, Oender; Applied Catalysis A: General; vol. 494; (2015); p. 22 – 28;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Name is 5,10,15,20-Tetraphenyl-21H,23H-porphine copper(II), as a common heterocyclic compound, it belongs to copper-catalyst compound, and cas is 14172-91-9, its synthesis route is as follows.,14172-91-9

Weigh 5,10,15,20-tetraphenyl copper porphyrin 1.000 g (1.5 mmol) was dissolved in a three-necked flask containing 175 mL of chloroform and dissolved by electromagnetic stirring at 40 C,Then add 15 mL of acetic acid,40 mL of acetic anhydride, followed by addition of .28 g (1.5 mmol) of copper nitrate, the reaction was carried out for about 25 min. Thin layer chromatography was carried out until the feed point was almost disappeared, poured into 200 mL of ice water mixture, neutralized with sodium hydroxide solution to pH = 9, and then washed several times, dried with anhydrous sodium sulfate, standing for one hour, pumping, the filtrate was concentrated to saturation, add 30mL hot methanol recrystallization.The solid was washed with methanol to a colorless, dry, bright purple crystal, beta-nitro-5,10,15,20-tetraphenyl copper porphyrin 0.90 g, yield 84%.

With the complex challenges of chemical substances, we look forward to future research findings about 5,10,15,20-Tetraphenyl-21H,23H-porphine copper(II)

Reference£º
Patent; Wuhan Institute of Technology; Gao, Hong; Wang, Huidong; Chen, Chujun; Huang, Qihao; (17 pag.)CN106366086; (2017); A;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Name is [1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene]copper chloride, as a common heterocyclic compound, it belongs to copper-catalyst compound, and cas is 578743-87-0, its synthesis route is as follows.,578743-87-0

General procedure: To a stirred solution of imidazolium salts (0.045 mmol), NaOtBu (4.3 mg, 0.045 mmol) and CuCl (4.5mg, 0.045 mmol) was added THF (0.5 mL, 0.09 M) at 30 oC under argon atmosphere. After stirring for 2 h, the solution of K+[CF3B(OMe)3]- (63.5 mg, 0.3 mmol, 6.0 equiv) in DMF (0.5 mL) was added dropwise. Then the mixture was kept stirring at 30 oC for 10 h. After that, the reaction was quenched with water. Aqueous layer was extracted with EtOAc (15 mL x 3), and the combined organic layers was washed with brine, dried over Na2SO4 and concentrated under reduced pressure. Then the crude product was purified by column chromatography on silica gel to give the imidazolinone 3b-d.

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
Article; Zeng, Wei; Wang, Enyu; Qiu, Rui; Sohail, Muhammad; Wu, Shaoxiang; Chen, Fu-Xue; Journal of Organometallic Chemistry; vol. 743; (2013); p. 44 – 48;,
Copper catalysis in organic synthesis – NCBI
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

142-71-2, Copper(II) acetate is a copper-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,142-71-2

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).

142-71-2 Copper(II) acetate 8895, acopper-catalyst compound, is more and more widely used in various.

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”

[1,3-Bis(2,6-diisopropylphenyl)imidazol-2-ylidene]copper chloride, cas is 578743-87-0, it is a common heterocyclic compound, the copper-catalyst compound, its synthesis route is as follows.,578743-87-0

In a dry double-mouth bottle to place Pt – 3 (0.0594 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 0.047 g, and the yield is 40%.

578743-87-0 is used more and more widely, 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”