Month: September 2020

128143-89-5, 4′-Chloro-2,2′:6′,2”-terpyridine is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthesis of 6-(2,2′:6′,2″-Terpyridine-4′-yloxy)-hexylamine To a suspension of KOH (2.70 g, 48 mmol) in anhydrous DMSO (50 mL) was added 6-Amino-1-hexanol (1.17 g, 10 mmol). The suspension was warmed up to 60 C. and stirred for additional 30 min, followed by addition of 4′-chloro-2,2′:6′,2″-terpyridine (2.68 g, 10 mmol). The reaction mixture was kept stirring for 2 d at the same temperature. The solution was then allowed to cool down to R.T., poured into deionized water (500 mL), stirred and allowed to precipitate overnight. The product was filtered off and dried up under high vacuum to give 2 as a pale yellow solid (2.90 g, 83.3%). 1H NMR (400 MHz, CDCl3): delta 1.47-1.86 (m, 8H), 2.74 (t, J=6.5 Hz, 2H, NCH2), 4.22 (t, J=6.5 Hz, 2H, OCH2), 7.34 (dd, J=2.0 Hz, 5.0 Hz, 2H, H5,5″(terpy)), 7.84 (td, J=2.0 Hz, 7.5 Hz, 2H, H4,4″(terpy)), 8.03 (s, 2H, H3′,5′(terpy), 8.67 (d, J=8.5 Hz, 2H, H3,3″terpy)), 8.70 (d, J=5.0 Hz, 2H, H6,6″(terpy)). GC-MS: m/z 348 (100%) (M+).

128143-89-5, 128143-89-5 4′-Chloro-2,2′:6′,2”-terpyridine 667748, acatalyst-ligand compound, is more and more widely used in various fields.

Reference£º
Patent; Massachusetts Institute of Technology; CHEN, Pangkuan; HOLTEN-ANDERSEN, Niels; (58 pag.)US2016/152638; (2016); A1;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

5350-41-4,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5350-41-4,N,N,N-Trimethyl-1-phenylmethanaminium bromide,as a common compound, the synthetic route is as follows.

General procedure: To a 50mL Schlenk tube containing benzylic ammonium iodide (0.5mmol), arylboronic acid (2.0mmol), K3PO4 (2.25mmol), castalyst (5molpercent) and PPh3 (20molpercent) were added and the tube was purged with N2 for 3 times. Then 1,4-dioxane (2.0mL), subsequently, was introduced to the tube. The resulted mixture was allowed to stir for 24h at 80¡ãC under atmosphere of N2. After the completion of the reaction, the resulting mixture was filtered through a Celite pad and concentrated under the vacuum and directly purified by flash chromatography to give the desired product.

As the paragraph descriping shows that 5350-41-4 is playing an increasingly important role.

Reference£º
Article; Liu, Xi-Yu; Zhu, Hai-Bo; Shen, Ya-Jing; Jiang, Jian; Tu, Tao; Chinese Chemical Letters; vol. 28; 2; (2017); p. 350 – 353;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

139-07-1, N-Benzyl-N,N-dimethyldodecan-1-aminium chloride is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The API-IL benzalkonium salicylate was prepared from benzyldimethyldodecylammoniumchloride (benzalkonium chloride) and sodium salicylate according to a procedure similar tothat described in the literature [8]. Sodium salicylate (0.93 g, 5.8 mmol) and benzyldimethyldodecylammoniumchloride (2.05 g, 5.8 mmol) were dissolved in 20 mL of acetone/H2O(1:1). The reaction mixture was stirred overnight at room temperature. The remaining suspensionwas diluted with 20 mL of distilled water. The product was extracted with dichloromethane.Sodium chloride as a byproduct was removed by washing the dichloromethane phase successivelywith water. The presence of chloride ions in the washings was detected using AgNO3solution. The dichloromethane was evaporated under reduced pressure. The obtained API-ILwas further dried at 343 K in vacuum for 8 h. The water content of the API-IL was determinedby a Karl-Fischer measurement, and the value was about 350 ppm. The synthesized API-ILwas characterized by 1H NMR (Bruker DPX) and IR (Nicolet IR-470).The characterization values obtained are: IR (KBr, cm-1): 3437(s), 3027(w), 2921(s),2852(s), 1638(s), 1590(s), 1484(s), 1456(s), 1219(s), 1137(m), 758(m), 735(m);1H NMR:(400 MHz, CDCl3)delta in ppm: delta 7.97 (dd, J = 7.7, 1.7 Hz, 1H), 7.48 (m, 6H), 6.87 (d,J = 8.2 Hz, 1H), 6.76 (t, J = 7.4 Hz, 1H), 4.82 (s, 2H), 3.36 (m, 2H), 3.21 (s, 6H), 1.74 (s, 2H),1.24 (d, J = 7.4 Hz, 18H), 0.88 (t, J = 6.8 Hz, 3H). The 1H NMR spectra of BaSal is presentedin Fig. S1 of the Supplementary Material.Thermal stability was measured on a STA 409 PC simultaneous thermal analyzer (Germany)in the range of 303-773 K at a heating rate of 10 K¡¤min-1 under an air environment. Itcan be seen from Supplementary Fig. S2 that BaSal has good thermal stability with the lowdecomposition temperature of 454 K., 139-07-1

The synthetic route of 139-07-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Yan, Zhenning; Shen, Shuangxia; Ma, Limin; Liu, Liyun; Chen, Xue; Journal of Solution Chemistry; vol. 47; 9; (2018); p. 1514 – 1528;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

170161-27-0, Tri-tert-butyl 1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

170161-27-0, General procedure: The dibromide was added to a solution of tri-tert-butyl 1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate (39.1 mg, 78.0 mumol), KI (12.9 mg, 78.0 mumol) and K2CO3 (10.8 mg, 78.0 mumol) in CH3CN (2.50 mL) under N2 and stirred for 24 h at room temperature. The reaction mixture was concentrated under reduced pressure and extracted with EtOAc. The organic layer was washed with water and brine, dried with MgSO4 and concentrated in vacuo to obtain the corresponding tri-N-Boc-protected amine intermediate (130 mg). A solution of the intermediate was added to bis(pyridin-2-ylmethyl)amine (12.0 mg, 60.0 mumol), KI (9.96 mg, 60.0 mumol) and K2CO3 (8.30 mg, 60.0 mumol) in CH3CN (3.00 mL) under N2 and stirred at 80 C for 24 h. The reaction mixture was concentrated under reduced pressure and extracted with EtOAc. The organic layer was washed with water and brine, dried with MgSO4 and concentrated in vacuo to obtain the corresponding tri-N-Boc-protected amine intermediate. The intermediate was then dissolved in CHCl3 (2.50 mL) and treated with 95% aqueous TFA (2.50 mL) at 0 C for 6 h. The mixture was concentrated under reduced pressure and purified by preparative HPLC to obtain the desired compound 16.

170161-27-0 Tri-tert-butyl 1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate 10940041, acatalyst-ligand compound, is more and more widely used in various fields.

Reference£º
Article; Sakyiamah, Maxwell M.; Kobayakawa, Takuya; Fujino, Masayuki; Konno, Makoto; Narumi, Tetsuo; Tanaka, Tomohiro; Nomura, Wataru; Yamamoto, Naoki; Murakami, Tsutomu; Tamamura, Hirokazu; Bioorganic and Medicinal Chemistry; vol. 27; 6; (2019); p. 1130 – 1138;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

787-70-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.787-70-2,[1,1′-Biphenyl]-4,4′-dicarboxylic acid,as a common compound, the synthetic route is as follows.

A mixture of Co(OAc)2*4H2O (49.2 mg, 0.2 mmol), L1 (32.3 mg, 0.1 mmol), H2bpdc (48.4 mg, 0.2 mmol), NaOH (8.0 mg, 0.2 mmol), ethanol (4 mL) and water (10 mL) was heated at 140 C for 3 days in a 25 mL Teflon-lined vessel container. The mixture was then cooled to room temperature at a rate of 5 C/h. Purple crystals suitable for single-crystal X-ray diffraction were obtained by filtration and washed with distilled water in 58 % yield (based on Co(OAc)2*4H2O). Calcd. for C34H30CoN4O4 (Fw = 617.55): C 66.1, H 4.9, N 9.1 %. Found: C 65.9, H 5.1, N 9.3 %. IR (KBr, cm-1): 1605 s, 1560 m, 1510 m, 1430 m, 1300 m, 1178 w, 847 w, 758 m.

The synthetic route of 787-70-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Zhang, Xu; Liu, Yong Guang; Yu, Baoyi; Cui, Guang Hua; Transition Metal Chemistry; vol. 41; 2; (2016); p. 213 – 223;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1662-01-7,4,7-Diphenyl-1,10-phenanthroline,as a common compound, the synthetic route is as follows.

[CuI(MeCN)4](ClO4) (50mg, 0.15mmol), PPh3 (80.4mg, 0.30mmol) and Ph2Phen (55.9mg, 0.17mmol) in MeCN (15ml) are stirred at room temperature for 1h. Slow evaporation of a MeCN solution of 3 afforded analytically pure complex as yellow crystalline solid. Yield (93.1mg, 59.8%). Elemental analysis for C60H46ClCuN2O4P2: calcd. C 70.65, H 4.55, N 2.75%; found: C 70.60, H 4.70, N 2.77%. Selected IR (KBr, cm-1): v(Cl-O) 1111. ESI-MS (positive): m/z 919 (M+). 1H NMR (300MHz, CDCl3): delta 8.83 (d, J=5.0Hz, 2H, phen H); 8.01 (s, 2H, phen H); 7.74 (d, J=5.0Hz, 2H, phen H); 7.62 (m, 6H, phenyl H); 7.57-7.51 (m, 4H, phenyl H); 7.37 (m, 6H, phenyl H); 7.26-7.14 (m, 24H, phenyl H). 31P{1H} NMR (162MHz, CDCl3): delta 2.97 (s, PPh3). UV/Vis (CH3CN): lambdamax /nm (epsilon/mol-1dm3cm-1): 228 (71180), 285 (58210), 381 sh (5810).

1662-01-7, As the paragraph descriping shows that 1662-01-7 is playing an increasingly important role.

Reference£º
Article; Hu, Lin-Li; Shen, Chang; Chu, Wing-Kin; Xiang, Jing; Yu, Fei; Xiang, Ge; Nie, Yan; Kwok, Chun-Leung; Leung, Chi-Fai; Ko, Chi-Chiu; Polyhedron; vol. 127; (2017); p. 203 – 211;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.134030-21-0,N1,N2-Dimesitylethane-1,2-diamine,as a common compound, the synthetic route is as follows.

In a GPC bottle, N,N?- dimesityl-ethanediamine (2 mmol) and C6F5CHO (3 mmol) were introduced. The mixture was crushed with a glass rod and a few drops of glacial acetic acid were added while stirring. After adding glacial acetic acid (1 mL) a precipitate was formed. Another glacial acetic acid (1 mL) was added, and the precipitate obtained after filtration was washed with cold isopropanol (-20 C) and then dried. The product was obtained as a white powder. Yield: 0.34g, 35%. 1H NMR (250 MHz, CDCl3) delta 6.79 (s, 4H), 6.37 (s, 1H), 3.89 (m, 2H), 3.51 (m, 2H), 2.51 (s, 9H), 2.20 (s, 9H) . 13C NMR (250 MHz, CDCl3) delta 139.07, 135.46, 130.12, 71.56, 51.04, 20.71., 134030-21-0

The synthetic route of 134030-21-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Musengimana, Eric; Fatakanwa, Claver; Oriental Journal of Chemistry; vol. 29; 4; (2013); p. 1489 – 1496;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2304-30-5,Tetrabutylphosphonium chloride,as a common compound, the synthetic route is as follows.

EXAMPLE 4 27.35 g of 3-methyl-3-chloro-2-(2′,2′-dichlorovinyl)-butanecarboxylic acid ethyl ester in the form of the crude solution prepared in Example 1 were dissolved in 50 ml of toluene. 2 g of tetrabutylphosphonium chloride were added and 16.8 g of 50% strength potassium hydroxide solution were then added dropwise at 0 C. The solution was subsequently stirred until it had reached room temperature and was then stirred for a further 1 hour at 35 C. It was then diluted with ice-water and rendered neutral and the organic phase was separated off and fractionated. This gave 21.9 g (92.5% of theory) of 2,2-dimethyl-3-(2′,2′-dichlorovinyl)-cyclopropanecarboxylic acid ethyl ester., 2304-30-5

2304-30-5 Tetrabutylphosphonium chloride 75311, acatalyst-ligand compound, is more and more widely used in various fields.

Reference£º
Patent; Bayer Aktiengesellschaft; US4217300; (1980); A;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

485-71-2, Cinchonidine is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixture of (-)-cinchonidine (1.0 mmol) and benzyl bromide 3 (1.0 mmol) having sulfonamidegroup was stirred in DMF (4 mL) at 25 C for 20 h. After the reaction was completed, the reaction mixture was added dropwise to ether (50mL) with stirring. The solid precipitated was filtered,washed with ether (20 mL) and hexane (20 mL) to afford cinchonidinium salt 5

485-71-2, 485-71-2 Cinchonidine 101744, acatalyst-ligand compound, is more and more widely used in various fields.

Reference£º
Article; Itsuno, Shinichi; Yamamoto, Shunya; Takata, Shohei; Tetrahedron Letters; vol. 55; 44; (2014); p. 6117 – 6120;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI

10534-59-5, Tetrabutylammonium acetate is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Preparation of four different solutions of tetradecavanadates, VxOyALz (A = Cl- or CH3CO2-, L = (C2H5)4N+ or (C4H9)4N+), was carried out according to a modified literature procedure [31]. All chemicals were purchased from Sigma-Aldrich and used as received. Briefly, 1.5 mmol of vanadyl acetylacetonate [VO(acac)2] and 0.6 mmol of either tetraethylammonium chloride [(C2H5)4NCl], tetrabutylammonium chloride [(C4H9)4NCl], tetraethylammonium acetate [(C2H5)4N(CH3CO2)] or tetrabutylammonium acetate [(C4H9)4N(CH3CO2)] were dissolved in 50 mL of acetonitrile. 0.8 mmol of triethyl amine was then added to the initial mixtures while stirring constantly at room temperature. Following 6 h of reaction, an Oakton 10 series pH meter (calibrated using buffers of pH 4, 7 and 10 at room temperature) was used to determine the pH of the resulting brown-colored solutions. The product mixtures were de-solvated under reduced pressure using a VWR1400E vacuum oven. Recrystallization was carried out in approximately 3 mL of N,N-dimethylformamide (N,N-DMF) by heating the solution to the boiling temperature (153 C) for 10 min. Any remaining N,N-DMF was then evaporated in vacuum to obtain pure dry crystals of polyoxovanadates. A small quantity of crystals was dissolved in acetonitrile to prepare concentrated stock solutions. These stock solutions were diluted further by factors of ten or one hundred in acetonitrile prior to analysis by ESI-MS.

10534-59-5, The synthetic route of 10534-59-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Johnson, Grant E.; Al Hasan, Naila M.; Laskin, Julia; International Journal of Mass Spectrometry; vol. 354-355; (2013); p. 333 – 341;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI