Tag: M.W:300-400

As a common heterocyclic compound, it belongs to chiral-catalyst compound, name is Benzo-18-crown 6-Ether, and cas is 14098-24-9, its synthesis route is as follows.

General procedure: The carbonyl substrate (0.1 g) is dissolved in 1-2 mL of anhydrous CHCl3 and 2.0 equiv of a benzocrown ether is added to the solution. To this mixture, CF3SO3H (8.0 equiv; H2SO4 may be used in some cases) is added dropwise with stirring. The reaction is stirred at room temperature for at least 2 h, after which, the mixture is poured over several grams of ice. The resulting solution is extracted three times with CHCl3. The organic phase is subsequently washed three times with water and dried over MgSO4 solution. Removal of the solvent provides the product.

14098-24-9, 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.,14098-24-9 ,Benzo-18-crown 6-Ether, other downstream synthetic routes, hurry up and to see

Reference£º
Article; Zielinski, Matthew E.; Tracy, Adam F.; Klumpp, Douglas A.; Tetrahedron Letters; vol. 53; 14; (2012); p. 1701 – 1704;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belong chiral-catalyst compound,1,3-Dimesityl-1H-imidazol-3-ium chloride,141556-45-8,Molecular formula: C21H25ClN2,mainly used in chemical industry, its synthesis route is as follows.,141556-45-8

Add ligand L2690mg (2.0mmol), copper powder 640mg (10.0mmol), 30 mL of water in a 50mL flask, 60 ~ 70 oil bath, the reaction was stirred for 24 hours, the reaction mixture was cooled to room temperature, filtered, the filter cake was washed 3 times with water, the filter cake dissolved in acetonitrile and filtered to remove unreacted copper powder, the solvent was evaporated under reduced pressure to give 520mg as colorless crystals, a yield of 65%.

With the synthetic route has been constantly updated, we look forward to future research findings about 1,3-Dimesityl-1H-imidazol-3-ium chloride,belong chiral-catalyst compound

Reference£º
Patent; China Petroleum & Chemical Corporation Shanghai Research Institute of Petrochemical.; Liu, Bo; Jin, Zhaosheng; Lu, Jiangang; Li, Xianming; Zhou, Haichun; (13 pag.)CN105585584; (2016); A;,
Chiral Catalysts
Chiral catalysts – SlideShare

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.14098-24-9,Benzo-18-crown 6-Ether,as a common compound, the synthetic route is as follows.

A mixture of 0.27 g OfMo(CO)6 (1.03 mmol), 0.12 g of KBr (1.00 mmol) and 0.31 g of benzo-18-crown-6-ether (1.00 mmol) was refluxed in 15 ml of freshly distilled THF for 2 hours. The yellow solution was filtered and a brown oil formed and started to separate. After decanting the oil, 40 ml of hexane were added and the schlenk was left at 0 0C to isolate a yellow solid. Extraction with CH2Cl2 afforded K[benzo-18-crown-6-ether][Mo(CO)5Br] as yellow needles (75% yield , 0.5 g).Analysis Calculated for BrC21H24KMo11: C, 37.80; H, 3.62. Found: C, 37.25; H5 3.83. IR (KBr pellet), cm4: 3069 (w), 2955 (m), 2941 (m), 2921 (m), 2067 (m), 1977 (w), 1932 (sh, s), 1914 (s), 1842 (s), 1834 (s), 1638 (br, w), 1596 (w), 1523 (w), 1505 (s), 1478 (w), 1457 (m), 1436 (w), 1382 (w), 1355 (m), 1343 (m), 1325 (m), 1286 (m), 1247 (s), 1214 (s), 1178 (br, sh5 w), 1166 (w), 1126 (m), 1116 (m), 1108 (m), 1097 (sh, w), 1083 (w), 1075 (w), 1055 (w), 961 (m), 952 (m), 935 (w), 922 (w), 908 (w), 882 (w), 860 (w), 848 (w), 833 (w), 806 (br, w), 782 (m), 737 (s), 598 (s), 542 (m), 507 (w), 463 (w). 1H NMR (CD2Cl2, 300 MHz): 7.00-6.90 (c, 4H, C6H4 crown ether), 4.22 + 3.95 + 3.77-3.42 (c, 1OH, aliphatic crown ether protons)., 14098-24-9

As the paragraph descriping shows that 14098-24-9 is playing an increasingly important role.

Reference£º
Patent; ALFAMA – INVESTIGACAO E DESENVOLVIMENTO DE PRODUTOS FARMACEUTICOS LDA.; WO2007/73225; (2007); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belongs to chiral-catalyst compound, name is 1,3-Dimesityl-4,5-dihydro-1H-imidazol-3-ium chloride, and cas is 173035-10-4, its synthesis route is as follows.,173035-10-4

RuCl2(?CHPh)(PCy3)s (phenylmethylene-bis(tricyclohexylphosphine) ruthenium dichloride, ?catalyst (I)?) (6.00 g, 7.29 mmol, 1.0 eq.), IMesH2.HCl salt prepared above (2 eq.), and potassium t-butoxide (2 eq.) were placed in a Schlenk flask. 60 mL of anhydrous degassed hexanes (Aldrich SureSeal bottle) were added. A vacuum was applied to further degas the reaction mixture, which was then heated to 60 C. for 24 hours. The suspension changed color from purple to orange-brown over the reaction time. After approximately 24 hr, the mixture was cooled to room temperature, and an excess of 1:1 isopropanol:water (180 mL) was added. The mixture was stirred rapidly in air for 30 min., then filtered using a medium porosity frit, and washed with isopropanol-water (3¡Á100 mL) and hexanes (3¡Á100 mL). The solids were dried in in vacuo, and the yield was approximately 75%. 1H NMR (CD2Cl2, 400 MHz) delta 19.16 (s, 1H), 7.37-7.05 (m, 9H), 3.88 (s, 4H), 2.56-0.15 (m, 51H); 31P NMR (CD2Cl2, 161.9 MHz) delta 31.41; HRMS (FAB) C45H65Cl2N2PRu [M+] 848.3306, found 848.3286.

With the complex challenges of chemical substances, we look forward to future research findings about 173035-10-4,belong chiral-catalyst compound

Reference£º
Patent; CALIFORNIA INSTITUTE OF TECHNOLOGY; Grubbs, Robert H.; Chatterjee, Arnab K.; Choi, Tae-Lim; Goldberg, Steven D.; Love, Jennifer A.; Morgan, John P.; Sanders, Daniel P.; Scholl, Matthias; Toste, F. Dean; Trnka, Tina M.; (27 pag.)US9403854; (2016); B2;,
Chiral Catalysts
Chiral catalysts – SlideShare

1,3-Dimesityl-1H-imidazol-3-ium chloride, cas is 141556-45-8, it is a common heterocyclic compound, the chiral-catalyst compound, its synthesis route is as follows.,141556-45-8

A mixtureof the corresponding azolium salt 1a-f (0.55 mmol), pyridineor 3-chloropyridine (4 g), PtCl2 (133 mg, 0.5 mmol), and fi nelyground anhydrous K2CO3 (345 mg, 2.5 mmol) was heated at80 with vigorous stirring for 16 h. In the obtaining of iodidecompl

141556-45-8 is used more and more widely, we look forward to future research findings about 1,3-Dimesityl-1H-imidazol-3-ium chloride

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.141556-45-8,1,3-Dimesityl-1H-imidazol-3-ium chloride,as a common compound, the synthetic route is as follows.

A butterfly for the keto-carbonyl of bridge [2Fe2Se] kind of iron-iron hydrogenase models object 5 preparation method, the chemical formula of the model [( mu-SeCH 2 (CO) CH 2 Se-mu)] Fe 2 (CO) 5 (IMes) (IMes=1,3-b (2, 4, 6-trimethyl phenyl) imidazole-2-carbene), shown in the preparing process is as follows. Specific preparation steps are as follows: 1) in high purity under the protection of nitrogen, with stirring to the drying of the magneton 100 ml reaction flask by adding 455 mg (1.336mmol) 1,3-bis (2, 4, 6-trimethyl phenyl) imidazole hydrochloride and 20 ml tetrahydrofuran, shall be mixed solution; 2) in the above-mentioned mixed solution is added with 1.6Mn-BuLi solution 1 ml, stirring the mixture at room temperature for 20 min, the reaction liquid obtained, the above-mentioned reaction solution is then filtered, and the filtrate by adding in 165 mg (0.334mmol) 1 further reaction to obtain a reaction mixture; 3) the above-mentioned reaction mixture, the solvent is pumped under reduced pressure, the residue is extracted with methylene chloride, the volume ratio of 1:1 mixture of dichloromethane-petroleum ether as a developing agent thin layer chromatographic separation, collection red the main ribbon, obtain a red solid 159 mg, the chemical formula is [( mu-SeCH 2 (CO) CH 2 Se-mu)] Fe 2 (CO) 5 (IMes) (5), the yield is 62%., 141556-45-8

141556-45-8 1,3-Dimesityl-1H-imidazol-3-ium chloride 2734211, achiral-catalyst compound, is more and more widely used in various fields.

Reference£º
Patent; Nankai University; Song, Licheng; Han, Xiaofeng; Song, Fengtao; (7 pag.)CN105294777; (2016); A;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO186,mainly used in chemical industry, its synthesis route is as follows.,141556-45-8

A butterfly for the keto-carbonyl of bridge [2Fe2Se] kind of iron-iron hydrogenase models object 5 preparation method, the chemical formula of the model [( mu-SeCH 2 (CO) CH 2 Se-mu)] Fe 2 (CO) 5 (IMes) (IMes=1,3-b (2, 4, 6-trimethyl phenyl) imidazole-2-carbene), shown in the preparing process is as follows. Specific preparation steps are as follows: 1) in high purity under the protection of nitrogen, with stirring to the drying of the magneton 100 ml reaction flask by adding 455 mg (1.336mmol) 1,3-bis (2, 4, 6-trimethyl phenyl) imidazole hydrochloride and 20 ml tetrahydrofuran, shall be mixed solution; 2) in the above-mentioned mixed solution is added with 1.6Mn-BuLi solution 1 ml, stirring the mixture at room temperature for 20 min, the reaction liquid obtained, the above-mentioned reaction solution is then filtered, and the filtrate by adding in 165 mg (0.334mmol) 1 further reaction to obtain a reaction mixture; 3) the above-mentioned reaction mixture, the solvent is pumped under reduced pressure, the residue is extracted with methylene chloride, the volume ratio of 1:1 mixture of dichloromethane-petroleum ether as a developing agent thin layer chromatographic separation, collection red the main ribbon, obtain a red solid 159 mg, the chemical formula is [( mu-SeCH 2 (CO) CH 2 Se-mu)] Fe 2 (CO) 5 (IMes) (5), the yield is 62%.

With the complex challenges of chemical substances, we look forward to future research findings about 1,3-Dimesityl-1H-imidazol-3-ium chloride,belong chiral-catalyst compound

Reference£º
Patent; Nankai University; Song, Licheng; Han, Xiaofeng; Song, Fengtao; (7 pag.)CN105294777; (2016); A;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO423,mainly used in chemical industry, its synthesis route is as follows.,141556-45-8

General procedure: 0.340 g (1.00 mmol) of 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride was deprotonated by the addition of n-BuLi (1.00 mmol) in THF at -40C. The reaction mixture was allowed to stir for 30 min after which 0.390 g dimanganese decacarbonyl (1.00 mmol) was added. The reaction mixture turned a deep orange colour after the introduction of the metal complex and the reaction mixture was allowed to slowly warm up to room temperature. The solvent was removed in vacuo and purified via silica gel chromatography by eluting first with hexane and secondly with a hexane-DCM 1:1 mixture.

With the synthetic route has been constantly updated, we look forward to future research findings about 1,3-Dimesityl-1H-imidazol-3-ium chloride,belong chiral-catalyst compound

Reference£º
Article; Fraser, Roan; van Sittert, Cornelia G.C.E.; van Rooyen, Petrus H.; Landman, Marile; Journal of Organometallic Chemistry; vol. 835; (2017); p. 60 – 69;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO190,mainly used in chemical industry, its synthesis route is as follows.,141556-45-8

General procedure: A 20 mL vial was charged with the NHC¡¤HCl (300 mg, 1 equiv.) and the zinc salt (1 equiv.). Tetrahydrofuran (5 mL) was added, the vial was sealed with a screw-cap and the reaction was stirred at 60C for two hours. The mixture was allowed to reach room temperature and the solvent was removed under reduced pressure toafford the desired product.

With the complex challenges of chemical substances, we look forward to future research findings about 1,3-Dimesityl-1H-imidazol-3-ium chloride,belong chiral-catalyst compound

Reference£º
Article; Santoro, Orlando; Nahra, Fady; Cordes, David B.; Slawin, Alexandra M.Z.; Nolan, Steven P.; Cazin, Catherine S.J.; Journal of Molecular Catalysis A: Chemical; vol. 423; (2016); p. 85 – 91;,
Chiral Catalysts
Chiral catalysts – SlideShare

As a common heterocyclic compound, it belongs to chiral-catalyst compound, name is 1,3-Dimesityl-1H-imidazol-3-ium chloride, and cas is 141556-45-8, its synthesis route is as follows.,141556-45-8

SIMes-HCI (100 mg, 0.292 mmol), [Pd(cin)(M-CI)]2 (62.9 mg, 0.122 mmol), a magnetic stir bar and acetone (1.2 mL) were charged into a vial or round bottom flask , followed by K2C03 (33.5 mg, 0.243 mmol). The mixture was stirred at 60 C for 5 h. The general work up procedure was then followed, affording the product as microcrystalline material in 80% (135 mg) yield. XH NMR (400 MHz, CDCh): delta (ppm) =67.12 (m, 3H), 7.06 (m, 2H), 6.96 (d, J = 11.19 Hz, 4H), 5.30 (s, 1 H), 5.12-5.04 (m, 1H), 4.27 (d, J = 12.96 Hz, 1H), 3.99 (m, 4H), 3.27 (d, J = 6.86 Hz, 1H), 2.44 (d, J = 15.24 Hz, 10H), 2.31 (s, 6H), 1.93 (m, 1H). 13C {XH} IMMR (100 MHz, CDCb): delta (ppm) = delta 210.9 (C, carbene), 138.0 (C), 137.8 (C), 136.3 (C), 135.7 (C), 129.1 (CH), 128.0 (CH), 127.5 (CH), 127.1 (CH), 126.4 (CH), 109.4 (CH), 92.1 (CH), 51.0 (CH2), 46.5 (CH2), 20.9 (CHs).Elemental analysis: Expected : C 66.76, H 7.72, N 4.21. Found : C 66.63, H 7.64, N 4.27.

With the complex challenges of chemical substances, we look forward to future research findings about 141556-45-8,belong chiral-catalyst compound

Reference£º
Patent; UMICORE AG & CO. KG; NOLAN, Steven P.; (47 pag.)WO2018/115029; (2018); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare