Tag: M.W=200-300

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 552331-15-4, name is 1-(5-Bromo-2-fluorophenyl)ethanol. A new synthetic method of this compound is introduced below., Computed Properties of C8H8BrFO

Step A: 4-bromo-2-( 1 -bromoethyl)- 1 -fluorobenzene (30-2)To a stirred solution of 1-(5-bromo-2-fluorophenyl)ethanol 30-1 (1.2 g, 5.48 mmol) in DCM (15 ml) was added tribromophosphine (0.26 mL, 2.74 mmol). The reaction mixture was stirred at 0C for lh, and then diluted with DCM (50 mL). Then saturated NaHCO3 solution was addeddropwise to the mixture, and the layers were separated. The organic layer was washed with saturated NaHCO3 solution (3OmL), brine (30 mL), and then dried over Na2SO4, and concentrated to give the crude product 30-2, which was used in the next step without purification.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, 552331-15-4, 1-(5-Bromo-2-fluorophenyl)ethanol.

Reference:
Patent; MERCK SHARP & DOHME CORP.; HAGMANN, William, K.; NARGUND, Ravi, P.; BLIZZARD, Timothy, A.; JOSIEN, Hubert; BIJU, Purakkattle; PLUMMER, Christopher, W.; DANG, Qun; LI, Bing; LIN, Linus, S.; CUI, Mingxiang; HU, Bin; HAO, Jinglai; CHEN, Zhengxia; WO2014/22528; (2014); A1;,
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Application of 7541-49-3, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 7541-49-3, name is 3,7,11,15-Tetramethylhexadec-2-en-1-ol. This compound has unique chemical properties. The synthetic route is as follows.

EXAMPLE 4 3 7,11,15-tetramethyl-hexadecanol (Dihydrophytol) Method B, Hydrogenation Over Nickel: (0031) Phytol (200.45 g) was hydrogenated at room temperature in ethanol (1 lit) with 30% slurry of Raney Nickel (85.7 g), with a stream of hydrogen for 104 hours to get dihydrophytol, 201.87 g (100%). Mass spec: m/z 297 (M-1)+. 1H NMR (CDCl3), delta ppm: 0.83-0.88 (m, 15H), 1.04-1.53 (m, 24H), 1.75 (s), 3.60-3.71 (m 2H). This product is used without further purification in the conversion to the corresponding bromide.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 7541-49-3, 3,7,11,15-Tetramethylhexadec-2-en-1-ol.

Reference:
Patent; The United States of America as represented by the Secretary of the Air Force; Tan, Loon-Seng; Kannan, Ramamurthi; Dalton, Matthew; US8471035; (2013); B1;,
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Electric Literature of 112-70-9, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 112-70-9, name is 1-Tridecanol. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of tridecanol (1.08 g, 5.31 mmol) in dichloromethane (20 mL), triphenyl phosphine (1.53 g, 5.84 mmol) and imidazole (0.39 g, 5.84 mmol) were added and cooled to0 C. I2 (1.48 g, 5.84 mmol) was added and the reaction mixture was stirred at room temperature for 3 h. After completion of starting materials, the reaction mixture was evaporated and diluted with hexane and passed through a Celite pad. The combined organic extracts were evaporated under reduced pressure to obtain the crude product which was purified by column chromatography (100- 200 mesh silica gel, eluent hexane) to furnish iodotridecane (1.43 g, 84%) as a low melting solid.

According to the analysis of related databases, 112-70-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; PHENOMENOME DISCOVERIES INC.; KHAN, M., Amin; WOOD, Paul, L.; GOODENOWE, Dayan; WO2013/71418; (2013); A1;,
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Synthetic Route of 112-70-9, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 112-70-9, name is 1-Tridecanol, molecular formula is C13H28O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

Compound 1 (590mg, 1.0mmol), which was prepared from protoporphyrin IX (PPIX) under acid esterification conditions,17 was dissolved in HBr/acetic acid (25%, 30mL) under nitrogen atmosphere and the mixture was stirred for 2h. All volatile solvents were evaporated under vacuum to yield dimethyl 3,3?-(7,12-bis(1-bromoethyl)-3,8,13,17-tetramethylporphyrin-2,18-diyl)dipropionate (2) as a green colored liquid. The resulting liquid was directly dissolved in dichloromethane (50mL), and 1-tridecanol (2.2mmol, 441mg) and Cs2CO3 (2.2mmol, 304mg) were added to the dichloromethane solution. The reaction mixture was again stirred under nitrogen atmosphere for 2h and filtered. The resulting filtrate was concentrated under the reduced pressure and the residue was purified by preparative TLC on silica gel with CH2Cl2/MeOH (20:1) to give compound 3a (218mg, 23% yield) as a dark violet crystal. Rf=0.8 (CH2Cl2/MeOH 20:1); 1H NMR (400MHz, CDCl3, TMS) delta 10.63 (s, 1H), 10.61 (s, 1H), 10.11 (s, 1H), 10.08 (s, 1H), 6.09 (m, 2H), 4.41-4.45 (m, 4H), 3.73 (s, 3H), 3.71 (s, 3H), 3.70 (s, 3H), 3.69 (s, 3H), 3.68 (s, 3H) 3.67 (s, 3H), 3.65 (m, 4H), 3.28-3.32 (m, 4H), 2.25-2.27 (d, J=7.0Hz, 6H), 1.09-1.80 (m, 42H), 0.84 (t, J=12.9Hz, 6H); 13C NMR (75MHz, CDCl3, TMS) delta 173.7 (2C; C=O), 140.6, 140.4, 138.4, 138.2, 137.2, 136.8, 136.5 (16C; C pyrrole), 98.8, 98.6, 96.8, 96.1, 73.3 (2C, OCH) 69.6 (2C, OCH2), 51.74 (2C; CO2CH3), 37.0 (2C, CH3CH), 31.9 (2C; CH2COOMe), 30.3, 29.5, 29.3, 26.4, 25.5, (24C; -CH2-), 22.6 (2C; CH2CH2COO), 21.9, 14.1 (2C, CH3C pyrrole), 11.7ppm (2C; CH3C pyrrole); IR (NaCl disc) 3311, 2924, 2853, 1739, 1435, 1100cm-1; MS (ESI, positive): m/z (%): 991; HRMS (ESI, positive) m/z Calcd for C62H94N4O6 [M+H]+; 991.7252, found: 991.7252.

According to the analysis of related databases, 112-70-9, the application of this compound in the production field has become more and more popular.

Reference:
Article; Tachikawa, Shoji; El-Zaria, Mohamed E.; Inomata, Ryu; Sato, Shinichi; Nakamura, Hiroyuki; Bioorganic and Medicinal Chemistry; vol. 22; 17; (2014); p. 4745 – 4751;,
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Synthetic Route of 112-70-9, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 112-70-9, name is 1-Tridecanol. This compound has unique chemical properties. The synthetic route is as follows.

EXAMPLE 1 [00073] The following Example describes the condensation esterification of DDDA using Fascat 2003 catalyst, a tin-based esterification catalyst from Elf Atochem, and the preparation of DDDA diesters with varying mole percent Telomer alcohol and Exxal 13. [00074] Reaction mixtures were prepared in 20 mL vials with the compositions indicated in table 4 below. One drop of Fascat 2003 (a product of Atochem) was added to each vial, and the reactions were heated at 200-250 C. for about 12 hours under a nitrogen sweep to remove evolved water. GC analysis of the reaction mixtures showed the expected three component ester mixture: RfO(O)C-(CH2)x-C(O)ORf; RhO(O)C-(CH2)x-C(O)ORh; and RhO(O)C-(CH2)x-C(O)ORf. The actual amount of each ester component present varied as expected with the relative amounts of Telomer alcohol and Exxal 13 present in the synthesis mixture. The appearance of the mixture formed from the respective additive and 150N oil as well as the solubility of the additive in 150N oil are also summarized in the Table 4. It is noteworthy that the fully fluorinated diester, vial 8, was more soluble when heated, but that the solution cooled to a gel-like state as the diester reprecipitated with cooling. Such behavior is very undesirable in a lubricant. This illustrates an important deficiency of the fully fluorinated diesters, since lubricants are often subjected to temperature cycling, and low-temperature performance is often critical.[TABLE-US-00005] TABLE 4 DDDA diesters with Telomer alcohol and Exxal 13 mol % Telomer Solubility in TelomerExxalalcohol 150 N DDDAalcohol13vs total oil atNo.(mmol)(mmol)(mmol)alcoholAppearance25 C. 15.150.2910.743liquid20%24.940.5810.515liquid35.151.349.8812honey->1% like45.052.48.8121very thick oil55.054.46.6240grease0.5% like65.135.625.4751grease?0.25% like75.158.262.7875beeswax like85.3411.060100paraffin0.1% like [00075] Wear test results for some of the above materials are shown in FIG. 2. It is clear from this figure that most of the wear benefit is achieved with only about 20 mole % Telomer alcohol in the diester. The wear response, quite surprisingly, is extremely non-linear. This is contrary to the linear response that might be expected if the wear-reducing effects were simply the net average from the concentration present of completely fluorinated diester (100% Telomer alcohol) and non-fluorinated ester (0% Telomer alcohol). This implies that the non-symmetric, partially fluorinated diesters of the present invention have better wear reducing properties than either the non-fluorinated or completely fluorinated diesters.

According to the analysis of related databases, 112-70-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; E. I. du Pont de Nemours and Company; US6734320; (2004); B2;,
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As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 65735-71-9, name is (4-Chloro-3-(trifluoromethyl)phenyl)methanol, molecular formula is C8H6ClF3O, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. Recommanded Product: 65735-71-9

Step A: Preparation of l-Chloro-4-(chloromethyl)-2-(trifluoromethyl)benzene.(4-Chloro-3-(tpifluoromethyl)phenyl)methanol (5.1 g, 24.22 mmol) was added m small portions to thionyl chlopide (20 mL, 275 mmol). The reaction mixture was stirred at 50 0C for 18 h and heated under reflux for 23 h. The mixture was concentrated and dried under high vacuum to give the title compound as a colorless liquid (5.41 g). 1H NMR (400 MHz, CDCl3) delta ppm 4.58 (s, 2H), 7.50-7.5 l(m, 2H), 7.71 (s, IH).

With the rapid development of chemical substances, we look forward to future research findings about 65735-71-9.

Reference:
Patent; ARENA PHARMACEUTICALS, INC.; JONES, Robert M.; BUZARD, DAniel J.; HAN, Sangdon; KIM, Sun He; LEHMANN, Juerg; ULLMAN, Brett; MOODY, Jeanne V.; ZHU, Xiuwen; STIRN, Scott; WO2010/11316; (2010); A1;,
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Application of 2215-78-3, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.2215-78-3, name is (4-Phenoxyphenyl)methanol, molecular formula is C13H12O2, molecular weight is 200.2332, as common compound, the synthetic route is as follows.

General procedure: p-Nitrobenzyl alcohol (0.25 g, 1.63 mmol) was dissolved in anhydrous CH2Cl2 under N2. Triethylamine (0.227 mL, 1.63 mmol) was added and the resulting solution was cooled to 0 C. S2Cl2 (65.3 muL, 0.82 mmol) was added dropwise over 20 min. The solution was stirred at 0 C for 2 h before being allowed to equilibrate to room temperature for 3 h. The reaction was quenched with dH20, washed with 2 × 20 mL aliquots of brine. The aqueous phase was extracted with CH2Cl2 (2 × 10 mL), and the combined organic was dried over MgSO4, filtered, and concentrated under reduced pressure. Column chromatography with a 2.5:1 ratio of hexanes:ethyl acetate afforded:

The chemical industry reduces the impact on the environment during synthesis 2215-78-3, I believe this compound will play a more active role in future production and life.

Reference:
Article; Stoutenburg, Eric G.; Palermo, Anne E.; Priefer, Ronny; Thermochimica Acta; vol. 551; (2013); p. 99 – 103;,
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Adding a certain compound to certain chemical reactions, such as: 4249-72-3, 2-Phenoxy-1-phenylethanol, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Safety of 2-Phenoxy-1-phenylethanol, blongs to alcohols-buliding-blocks compound. Safety of 2-Phenoxy-1-phenylethanol

General procedure: In a typical reaction, 125 ML phosphate buffer (0.2 mol L-1, pH 7),90 ML distilled water, 265 ML AuNPs-GQDs18 (0.72 g L-1, 0.01 mg gold)were mixed. Then, 0.1 mg substrate in 50 ML ethanol was dried at 50 Cin an open bottle. The bottle was sealed after the AuNPs-GQDs18 solutionand 20 ML fresh H2O2 (30 g L-1) was injected into it. The reactionmixture was heated at 75 C for 4 h in a horizonal oscillator. The conversionand yield were determined by HPLC. The catalyst could be recoveredby dialysis (8000-140,000 Da) and reused for 2 times (seeTable S3).

The synthetic route of 4249-72-3 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Zhang, Fangwei; Zhang, Jiali; Guo, Shouwu; Inorganic Chemistry Communications; vol. 104; (2019); p. 105 – 109;,
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Application of 869725-53-1 ,Some common heterocyclic compound, 869725-53-1, molecular formula is C8H6BrF3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

STEP A: Preparation of (2-bromo-5-trifluoromethyl-benzyloxy)-tert-butyl-dimethyl-silane To a solution of (2-bromo-5-(trifluoromethyl)phenyl)methanol (from Preparation 2, 10 g, 39 mmol) in DMF (20 mL) was added imidazole (5.87 g, 86.3 mmol) followed by t-butyldimethylsilyl chloride (7.11 g, 47.2 mmol) and the reaction was stirred at room temperature for 16 hours. The mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over sodium sulfate and concentrated in vacuo. The residue was purified by chromatography over 25+M Biotage silica column (eluted with 0-20% ethyl acetate in heptane) (5CV), 20% (1 CV) to afford a colorless oil (14 g, 97%) of the title compound. 1H NMR (400 MHz, CDCl3) delta ppm 0.15 (s, 6H) 0.98 (s, 9H) 4.75 (s, 2H) 7.36 (m, 1H) 7.60 (d, J=8.3 Hz, 1H) 7.84 (s, 1H)). GCMS: 311 (M-57, t-bu).

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. 869725-53-1, 2-Bromo-5-(trifluoromethyl)benzyl Alcohol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Pfizer Inc; US2007/213371; (2007); A1;,
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Synthetic Route of 23783-42-8, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 23783-42-8, name is 2,5,8,11-Tetraoxatridecan-13-ol, molecular formula is C9H20O5, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

2,5,8,1 1-Tetraoxatridecan-13-ol (5.0 g, 24.01 mmol) was dissolved in THF(20.01 ml). pyridine (5.83 ml, 72.0 mmol) was added to the mixture followed by 4-methylbenzene-1-sulfonyl chloride (5.49 g, 28.8 mmol). The mixture stirred at roomtemperature overnight. Mixture was concentrated by roto-vap. Residue was dissolved in dichloromethane. Material was washed twice with saturated aqueous sodium bicarbonate. Combined aqueous layers were back-extracted with dichloromethane. Combined organics were washed twice with iN hydrochloric acidand once with brine. Organics were dried MgSO4, filtered and then concentrated todryness to get 2,5,8,11-tetraoxatridecan-13-yl 4-methylbenzenesulfonate (4.12 g, 11.37 mmol, 47.3 % yield) which was used as is in the next step.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 23783-42-8, 2,5,8,11-Tetraoxatridecan-13-ol.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; GILLMAN, Kevin W.; GOODRICH, Jason; BOY, Kenneth M.; ZHANG, Yunhui; MAPELLI, Claudio; POSS, Michael A.; SUN, Li-Qiang; ZHAO, Qian; MULL, Eric; GILLIS, Eric P.; SCOLA, Paul Michael; LANGLEY, David, R.; (683 pag.)WO2016/77518; (2016); A1;,
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