Day: August 24, 2020

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 3a (1 mmol) and benzo[18]krown-6 (312 mg, 1 mmol) in trifluoroacetic acid (2 mL) was kept for 24 h at room temperature. The solvent was removed under reduced pressure. The residue was diluted in aqueous ethanol and neutralized with a triethylamine to pH = 7. The obtained solution was stayed for 3 days in an open vessel. The precipitated product was separated by filtration and washed three times with water (3 * 5 mL) and dried in vacuo at 120 C. Yellow crystals; Yield 50%; Mp 240-242 C. 1H NMR (400 MHz, DMSO-d6) delta 8.66 (s, 1H), 8.48 (dd, J = 8.0, 2.0 Hz, 1H), 8.23 (d, J = 2.0 Hz, 1H), 7.22 (d, J = 8.0 Hz, 1H), 4.24-4.20 (m, 4H), 3.86-3.80 (m, 4H), 3.67-3.62 (m, 4H), 3.62-3.60 (m, 4H), 3.55 (s, 4H). 13C NMR (101 MHz, DMSO-d6+CCl4) delta 154.58, 154.04, 153.99, 152.08, 148.14, 143.60, 129.32, 126.68, 124.18, 112.45, 69.91, 69.77, 69.69, 68.57, 68.49, 68.22. Anal. Calcd. For C21H25N7O6: C, 53.50; H,5.34; N, 20.80. Found: C, 53.42; H, 5.47; N, 20.73.

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

Reference£º
Article; Gorbunov, Evgeny B.; Rusinov, Gennady L.; Ulomsky, Evgeny N.; Rusinov, Vladimir L.; Charushin, Valery N.; Chupakhin, Oleg N.; Tetrahedron Letters; vol. 57; 21; (2016); p. 2303 – 2305;,
Chiral Catalysts
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141556-45-8, 1,3-Dimesityl-1H-imidazol-3-ium chloride is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

8. Chemical reaction involving potassium metal in phosphonium-based ionic liquids: generation of an NHC in a PIL; [00063] l,3-6/s(2,4,6-trimethylphenyl) imidazolium chloride (2.00 g, 5.87mmol) and an excess of potassium metal (0.35 g, 8.75 mmol), previously washedwith anhydrous THF, were added to trihexyl(tetradecyl) phosphonium chloride (10 mL). The reaction mixture was heated at 80 C under nitrogen for 24 hours. Hexanes (10 ml) were added to the resulting suspension and the solution was filtered through Celite to remove undissolved materials. Evacuation to remove hexanes gave a brown viscous residue that was characterized as a solution of trihexyl(tetradecyl) phosphonium chloride and l,3-ft/s(2,4,6-trimethylphenyl)-imidazol-2-ylidene.; 10. Formation of ./V-heterocvclic carbenes in phosphonium-based ionic liquids; [00065] l,3-&w(2,4,6-trimethylphenyl)imidazolium chloride (0.25 g, 100% 13Clabeled at C2) and a solution composed of ether free PhMgBr (2.00 mmol) dissolved in trihexyl(tetradecyl) phosphonium decanoate (5 mL) were mixed at room temperature. A small amount of toluene was added to reduce the viscosity and to facilitate stirring. NMR studies on the reaction mixtures show the presence of a major peak in the 13C NMR spectrum at 218 ppm, consistent with the formation of l,3-Z>/.s(2,4,6-trimethylphenyl) imidazol-2-ylidene.[00066] l,3-*w(2,4,6-trimethylphenyl) imidazolium chloride (2.00 g, 5.87mmol) and an excess of potassium metal (0.35 g, 8.75 mmol), previously washed with anhydrous THF, were added to trihexyl(tetradecyl) phosphonium chloride (15 mL). The reaction mixture was heated at 80 C under nitrogen for 24 hours. Hexanes (10 mL) were added to the resulting suspension and the solution was filtered through Celite. Evacuation to remove hexanes gave a reddish brown viscous material, and this residue was characterized as a solution of trihexyl(tetradecyl) phosphonium chloride and l,3-izs(2,4,6-trimethylphenyl)imidazol-2-ylidene.

As the paragraph descriping shows that 141556-45-8 is playing an increasingly important role.

Reference£º
Patent; SIMON FRASER UNIVERSITY; WO2006/7703; (2006); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.250285-32-6,1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride,as a common compound, the synthetic route is as follows.

Finely powdered PdCl2 (177 mg, 1.00 mmol) was suspended in CH3CN (5 mL), and N- benzyldimethylamine (160 muL, 143 mg, 1.05 mmol) were added. The solution was heated to 8O0C with stirring a until clear, orange solution was formed (approx. 20 min). Finely powdered K2CO3 (691 mg, 5.00 mmol) was added and the stirring was continued until palladacycle formation was complete, as indicated by the formation of a canary yellow solution (5-10 min) . IPr-HCl (467 mg, 1.10 mmol) was added and the mixture was stirred at 8O0C over 18h. The reaction mixture was filtered and evaporated. The resulting product was purified by column chromatography. Upon application of the product to a pad of silica gel (2.5 x 8 cm) pre-equilibrated with CH2Cl2, CH2Cl2 (100 mL) was used to elute impurities. The pure NHC-palladacycles were eluted with CH2Cl2-ethylacetate (3:1, vol/vol, 150 mL), and the solvents were evaporated. The products were triturated with hexanes (25 mL). After drying in high vacuum, IPr- Pd(dmba)Cl (543 mg, 82%) was obtained as beige solid. 1H NMR (CDCl3, 400 MHz) delta: 7.40 (t, J= 7.6 Hz, 2H), 7.30 (d, J= 7.6 Hz, 2H); 7.21 (s, 2H), 6.82-6.70 (m, 3H), 6.53 (d, J = 7.6 Hz, IH), 3.46 (s, 2H), 3.37 (m, 2H), 3.15 (m, 2H)5 2.39 (s, 6H)5 1.49 (d, J= 6.8 Hz, 6H), 1.18 (d, J= 6.8 Hz, 6H), 1.02 (d, J= 6.8 Hz, 6H), 0.81 (d, J= 6.4 Hz, 6H). 13C NMR (CDCl3, 100 MHz) delta: 177.5, 150.5, 147.8, 147.8, 144.7, 136.2, 136.1, 129.7, 125.4, 124.6, 124.0, 123.8, 122.6, 121.5, 72.6, 49.8, 29.0, 28.3, 26.4, 26.2, 23.2, 23.2. Anal, calcd for C36H48ClN3Pd (665.67): C, 65.05; H, 7.28; N, 6.32. Found: C, 65.14; H, 7.41; N, 6.53.

The synthetic route of 250285-32-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH; WO2008/156451; (2008); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare

250285-32-6, 1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

IPr-HCI (82.04 mg, 0.193 mmol), [Pd(allyl)(M-CI)]2 (35.3 mg, 0.0965 mmol), a magnetic stir bar and acetone (0.8 mL) were charged to a vial . The mixture was stirred at 60 C for 1 h. Then the solvent was removed and dried under vacuum. The product was obtained as a yellow powder in a 99% (117 mg). XH NMR (400 MHz, CDCIs): delta (ppm) = 9.16 (s, 1H), 8.28 (d, J = 1.62 Hz, 2H), 7.54-7.50 (m, 2H), 7.32 (d, J = 7.17 Hz, 4H), 5.16-5.10 (m, 1H), 3.76 (s, 2H), 2.67 (d, J = 11.57 Hz, 2H), 2.48-2.44 (m, 4H), 1.27 (d, J = 6.79 Hz, 12H), 1.20 (d, J = 7.20 Hz, 12H).13C {XH} NMR (100 MHz, CDCIs): delta (ppm) = 5144.9 (C), 136.8 (CH), 131.8 (C), 129.7 (C), 127.3 (CH), 124.4 (CH), 108.9 (C), 60.3 (CH), 28.8 (CHs), 24.4 (CHs), 23.8 (CHs). Elemental analysis: Expected : C 59.07, H 7.27 N 4.59, Found : C 58.90 H 7.17 N 4.57.

250285-32-6 1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride 2734913, achiral-catalyst compound, is more and more widely used in various.

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

173035-10-4, 1,3-Dimesityl-4,5-dihydro-1H-imidazol-3-ium chloride is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: conditions 1), NHC.HCl (1.0mmol) was dissolved/suspended in 5mL water. Tollens? reagent was prepared by mixing silver(I) oxide (127mg, 0.548mmol) and concentrated ammonia (0.73mL, 15.3mol/L, 11mmol) until complete dissolution. The reagent was diluted with quantum satis water for a final volume of 5mL. An instantaneous precipitation was observed. After 30minat RT, the white solid was filtered and washed with water. Conditions 2), NHC.HCl (1.0mmol) was dissolved/suspended in 10mL of water or ethanol. Silver(I) oxide (127mg, 0.549mmol) and ammonia (0.65mL, 15.3mol/L, 9.9mmol) were added. After 30-200min at RT, the white solid was isolated by filtration and washed with water (IMes, SIMes) or ethanol (IPr, SIPr).

The synthetic route of 173035-10-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Gibard, Clementine; Fauche, Kevin; Guillot, Regis; Jouffret, Laurent; Traikia, Mounir; Gautier, Arnaud; Cisnetti, Federico; Journal of Organometallic Chemistry; vol. 840; (2017); p. 70 – 74;,
Chiral Catalysts
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33100-27-5, 1,4,7,10,13-Pentaoxacyclopentadecane is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A suspension of H3MST (323mg, 0.467mmol) and NaH (34.7mg, 1.45mmol) in 5mL of DMA was allowed to stir for 45min. After H2 evolution ceased, In(OAc)3 (137mg, 0.469mmol) was added and the solution stirred vigorously. After 2h, 5mL of Et2O was added and the solution stirred for an additional 30min, followed by filtration (see Note). The filtrate was concentrated to dryness under reduced pressure, then the residue was triturated with Et2O and dried to afford a white precipitate. The solid was collected in a medium-porosity glass fritted funnel, washed with Et2O and pentane, and dried in vacuo to yield 356mg (?90percent) of a white powder, which was used without further purification. 1H NMR (500MHz, DMSO-d6, ppm): 2.22 (s, 9H), 2.52 (br t, 6H), 2.58 (s, 18H), 2.80 (br t, 6H), 6.87 (s, 6H). A suspension of this white powder that was assumed to be [InMST] (117mg, 0.145mmol), NaOH (6.3mg, 0.16mmol) and 15-crown-5 (46muL, 0.23mmol) in 4mL THF was allowed to stir for 8h, after which the mixture was filtered with a medium-porosity glass fritted funnel into a vial. Diethyl ether was slowly allowed to diffuse into the vial and within 1day a white powdery residue formed, which was removed via filtration and the filtrate was again exposed to Et2O vapor. Over the next 5days colorless crystals formed, which were collected, washed with Et2O, and dried in vacuo to yield 65mg (40percent) of the product. 1H NMR (500MHz, CDCl3, ppm): 1.79 (s, OH), 2.26 (s, 9H), 2.58 (t, 6H), 2.72 (s, 18H), 2.92 (t, 6H), 3.62 (m, 20H), 6.87 (s, 6H). 13C{1H} NMR (500MHz, CDCl3, ppm): 21.0, 23.6, 40.2, 52.9, 69.4, 131.4, 136.5, 139.4, 140.0. FTIR (Nujol, selected bands, cm?1) nu(OH) 3561; 1602, 1563, 1113, 975, 817, 653. Anal. Calc. for [15-crown-5?NaI-(mu-OH)-InIIIMST], C47H76InN4NaO13S3: C, 49.24; H, 6.64; N, 5.10. Found: C, 49.56; H, 6.72; N, 4.92percent.

The synthetic route of 33100-27-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Sickerman, Nathaniel S.; Henry, Rene?e M.; Ziller, Joseph W.; Borovik; Polyhedron; vol. 58; (2013); p. 65 – 70;,
Chiral Catalysts
Chiral catalysts – SlideShare

7181-87-5, 1,3-Dimethyl-1H-benzo[d]imidazol-3-ium iodide is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1,3-Dimethylbenzimidazolium iodide (0.24 g, 0.88 mmol)and silver(I) oxide (0.10 g, 0.44 mmol) were added to CH2Cl2(20 mL) and ethanol (20 mL), and the mixture was stirred atroom temperature for 5 h under argon atmosphere in absenceof light. Subsequently, (tht)AuCl (0.28 g, 0.88 mmol) wasadded and the reaction mixture was stirred at room temperaturefor further 9 h. The mixture was filtered throughCelite, and the solvent was removed under reduced pressure. The crude product was purified by silica-gel column chromatography(eluent: acetone). The product was further purifiedby recrystallization from a mixture of CH2Cl2 andhexane to afford Au NHC complex 1 as colorless platecrystals (84%, 0.28 g, 0.74 mmol). M.p.: 293 C. 1H NMR(CDCl3, delta): 7.47 (s, 4H; 4,5,6,7-H in benzimidazole), 4.05 (s,6H; CH3). 13C NMR (CDCl3, delta): 179.0 (2-C in benzimidazole),133.8 (5,6-C in benzimidazole), 124.7 (ring-fusion C),111.3 (4,7-C in benzimidazole), 35.2 (N-CH3). IR (KBr, nu):2943, 2862, 1457, 1387, 746 cm-1. HRMS (FAB) m/z [M+H]+ calcd. for C9H11AuClN2: 379.0276; found, 379.0280.Anal. calcd. for C9H10AuClN2: C, 28.55; H, 2.66; Au, 52.02;N, 7.40; found: C, 28.35; H, 2.54; N, 7.42; ash, 47.0.

7181-87-5 1,3-Dimethyl-1H-benzo[d]imidazol-3-ium iodide 11821793, achiral-catalyst compound, is more and more widely used in various.

Reference£º
Article; Sathyanarayana, Arruri; Nakamura, Shin-ya; Hisano, Kyohei; Tsutsumi, Osamu; Srinivas, Katam; Prabusankar, Ganesan; Science China Chemistry; vol. 61; 8; (2018); p. 957 – 965;,
Chiral Catalysts
Chiral catalysts – SlideShare

141556-45-8, 1,3-Dimesityl-1H-imidazol-3-ium chloride is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

taken the imidazole chlorine salt [(R 1 NCHCHNR 1) CH]Cl (0.34 g, 1.0 mmol), ferrous bromide (0.22 g, 1.0 mmol) and sodium bromide (0.33 g, 3.2 mmol), in thf as the solvent, the 60 C reaction under 16 hours. Centrifugal, supernatant fluid transfer, remove precipitation, is added to the supernatant liquid of the three ring hexyl phosphine (0.28 g, 1.0 mmol), in 30 C reaction under 6 hours. Vacuum to remove the solvent, hexane washing, drying, in a mixed solvent of toluene and tetrahydrofuran extraction, centrifugal supernatant fluid transfer, after concentrating the serum to obtain a target product, yield 84%.

The synthetic route of 141556-45-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Suzhou University; sun, hongmei; li, zhuang; liu, ling; chen, qi; (17 pag.)CN105541922; (2016); A;,
Chiral Catalysts
Chiral catalysts – SlideShare

14098-24-9, Benzo-18-crown 6-Ether is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of chloroform (50 ml) and acetic acid (50 ml) were charged in 250 ml round bottom flask. The monobenzo 18-crown-6 ether was added in to the mixture and stirred well. Afterword 8.5 ml nitric acid (70%) slowly dropwise added over a period of 30 min and stirring was continued at RT for additional 24 hr. Then the mixture was neutralized with aqueous Na2CO3 and the reaction product in to aqueous layer extract with chloroform (70 ml x 3). The combined chloroform layer dried by Na2SO4 and evaporated on rotary evaporator observed a yellow crude solid. Crude solid was recrystallized in ethanol to furnish a pure nitro product. Yield: 77%; m.p. 69-71C (Lit.70-72C).

14098-24-9 Benzo-18-crown 6-Ether 585779, achiral-catalyst compound, is more and more widely used in various.

Reference£º
Article; Patil, Dayanand R.; Chandam, Dattatraya R.; Mulik, Abhijeet G.; Jagdale, Suryabala D.; Patil, Prasad P.; Deshmukh, Madhukar B.; Synthetic Communications; vol. 45; 16; (2015); p. 1902 – 1911;,
Chiral Catalysts
Chiral catalysts – SlideShare

250285-32-6, 1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride is a chiral-catalyst compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Finely powdered (CH3CN)2PdCl2 (25.9 mg, 1.00 mmol) was suspended in CH3CN (5 mL) and (S)-alpha,N,N- trimethylbenzylamine (173 muL, 157 mg, 1.05 mmol) was added. The solution was heated to 800C for 5 min and finely powdered K2CO3 (691 mg, 5.00 mmol) was added. The stirring was continued until palladacycle formation was complete, as indicated by the formation of a canary yellow solution (5-10 min). IPr-HCl (467 mg, 1.10 mmol) was added and the mixture was stirred at 800C over 18h. The reaction mixture was filtered and evaporated. The resulting product was purified by column chromatography. Upon application of the product to a pad of silica gel (2.5 x 8 cm) pre-equilibrated with CH2Cl2, CH2Cl2 (100 mL) was used to elute impurities. The pure NHC-palladacycles were eluted with CH2Cl2-ethylacetate (3:1, vol/vol, 150 mL), and the solvents were evaporated. The products were triturated with hexanes (25 mL). After drying in high vacuum, IPr-PdCl-(A2N C-(S)-a-MeBnNMe2) (542 mg, 80%) was obtained as beige solid. 1H NMR (CDCl3, 400 MHz) delta: 7.46 (t, J= 8.0 Hz5 2H), 7.34 (d, J= 4.4 Hz, 2H); 7.30- 7.25 (m, 3H), 7.24 (d, J= 1.6 Hz, IH); 7.19 (d, J= 1.6 Hz), 7.04 (rn, IH), 6.80 (td, J= 7.2, 1.2 Hz, IH), 6.74 (m, IH), 6.70 (dd, J= 7.2, 2.0 Hz, IH), 6.55 (d, J= 6.8 Hz5 IH), 3.81 (m, IH), 3.67 (m, IH), 3.10 (q, J= 6.4 Hz, IH), 2.92 (m, IH), 2.45 (m, IH), 2.37 (s, 3H), 2.27 (s, 3H), 1.52 (d, J= 6.8 Hz, 3H), 1.44 (d, J= 6.8 Hz, 3H), 1.20 (d, J= 6.8 Hz, 3H), 1.17 (d, J= 5.6 Hz, 3H)5 1.15 (d, J= 5.6 Hz, 3H), 1.08 (d, J= 6.8 Hz, 3H), 0.96 (d, J= 6.4 Hz, 3H), 0.90 (d, J= 6.8 Hz, 3H), 0.46 (d, J= 6.4 Hz, 3H). 13C NMR (CDCl3,100 MHz) delta: 178.0, 154.5, 149.4, 147.9, 147.6, 144.8, 144.7, 136.5, 136.1, 136.0, 129.8, 129.5, 125.2, 125.2, 124.1, 123.8, 123.7, 122.7, 121.1, 75.3, 50.0, 46.6, 29.0, 29.0, 28.4, 28.2, 27.0, 26.8, 26.0, 25.3, 23.6, 23.4, 22.8, 22.6.

250285-32-6 1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride 2734913, achiral-catalyst compound, is more and more widely used in various.

Reference£º
Patent; AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH; WO2008/156451; (2008); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare