Category: alcohols-buliding-blocks

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. 42514-50-1, name is 3-Amino-3-methylbutan-1-ol. A new synthetic method of this compound is introduced below., HPLC of Formula: C5H13NO

To a stirred suspension of sodium hydride (0.3Og, 80% dispersion in mineral oil) in dry N,N-dimethylformamide (2ml) under an atmosphere of nitrogen at ambient temperature was added dropwise a solution of 1-hydroxy-3-methylbut-3-ylamine (0.52g) in N1N- dimethylformamide (5ml). The mixture was stirred for 3 hours, methyl iodide (0.74g) in N,N-dimethylformamide (5ml) added over 5 minutes then stirred for another 2.25 hours and stored for 18 hours at ambient temperature. The solution was diluted with water, extracted into ethyl acetate (three times) and the extracts combined then extracted with dilute hydrochloric acid. The aqueous acidic extract was evaporated under reduced pressure and co-distilled with toluene to remove residual water to give 1-methoxy-3- methylbut-3-ylamine hydrochloride as a yellow gum.1H NMR (CDCI3) delta ppm: 1.54(6H,s); 1.96-2.00(2H,t); 3.48(3H,s); 3.62-3.66(2H,t).

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, 42514-50-1, 3-Amino-3-methylbutan-1-ol.

Reference:
Patent; SYNGENTA PARTICIPATIONS AG; WO2008/110355; (2008); A1;,
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Adding a certain compound to certain chemical reactions, such as: 75476-86-7, 6-Bromo-2,3-dihydro-1H-inden-1-ol, 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, Computed Properties of C9H9BrO, blongs to alcohols-buliding-blocks compound. Computed Properties of C9H9BrO

(1) 6-Bromoindan-1-ol (3.01 g) and dihydropyrane (1.78 g) are dissolved in dichloromethane (50 ml), and thereto is added pyridinium p-toluenesulfonate (178 mg), and the mixture is stirred at room temperature for 1.5 hour. The reaction solution is washed with a saturated aqueous sodium hydrogen carbonate solution, dried, and evaporated to remove the solvent. The residue is purified by silica gel column chromatography (solvent; hexane/ethyl acetate) to give 6-bromo-1-tetrahydropyranyloxyindane (4.10 g). MS (m/z): 296, 298 (M+)

At the same time, in my other blogs, there are other synthetic methods of this type of compound,75476-86-7, 6-Bromo-2,3-dihydro-1H-inden-1-ol, and friends who are interested can also refer to it.

Reference:
Patent; Tanabe Seiyaku Co., Ltd.; US5830873; (1998); A;,
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Application of 1589-47-5, 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. 1589-47-5, name is 2-Methoxypropan-1-ol. A new synthetic method of this compound is introduced below.

The distillate of example 2 was dewatered by means of azeotropic distillation using a distillation column having an inner diameter of 25 mm and a filling with stainless steel coils. The column had a separation efficiency of 25 theoretical stages and was equipped with external electric heating to compensate heat loss. The distillate of example 2 was fed continuously at a rate of 150 g/h to the 3rd theoretical stage (counted from the top) of said column. Additionally benzene was fed to the top of the column. The reboiler was heated to obtain 1235 g/h distillate. The distillate was condensed and transferred to a phase separation vessel, in that it separated to a benzene phase and an aqueous phase. The benzene phase was again fed to the top of the column and the aqueous phase was removed at a rate of 115 g/h. Simultaneously, a bottom product was removed at a rate of 35 g/h. The content of organic compounds of the bottom product was analyzed via gc-analysis. The water content was determined by Karl-Fischer-Titration.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,1589-47-5, 2-Methoxypropan-1-ol, and friends who are interested can also refer to it.

Reference:
Patent; DEGUSSA AG; UHDE GMBH; WO2004/773; (2003); A1;,
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Adding a certain compound to certain chemical reactions, such as: 2516-33-8, Cyclopropylmethanol, 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, category: alcohols-buliding-blocks, blongs to alcohols-buliding-blocks compound. category: alcohols-buliding-blocks

General procedure: To a solution of (3,3-difluorocyclobutyl)methanol (4.0 g, 32.8 mmol) in dichloromethane (109 ml) at room temperature was added Dess-Martin Periodinane (16.7 g, 39.3 mmol). After 2 h, the reaction was diluted with two volumes of ether and treated with sodiumthiosulfate (32 g) in water (160 mL). After stirring at room temperature for 10 min, the layers were separated. The ethereal was washed with saturated sodium bicarbonate (2X), dried over magnesium sulfate, and filtered. The resulting solution was concentrated via distillation of the solvent through a short path distillation apparatus. The distillation was discontinued when 6.56 g remained in the boiling flask. Integration of the 1H NMR showed product as a 28.4 wt% solution in diethyl ether (1.86 g, 47% yield). The material was directly used without further concentration

The synthetic route of 2516-33-8 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Degnan, Andrew P.; Maxwell, Darrell; Balakrishnan, Anand; Brown, Jeffrey M.; Easton, Amy; Gulianello, Michael; Hanumegowda, Umesh; Hill-Drzewi, Melissa; Miller, Regina; Santone, Kenneth S.; Senapati, Arun; Shields, Eric E.; Sivarao, Digavalli V.; Westphal, Ryan; Whiterock, Valerie J.; Zhuo, Xiaoliang; Bronson, Joanne J.; Macor, John E.; Bioorganic and Medicinal Chemistry Letters; vol. 26; 24; (2016); p. 5871 – 5876;,
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Related Products of 28539-02-8, 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. 28539-02-8, name is 1-(Hydroxymethyl)benzotriazole, molecular formula is C7H7N3O, 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.

3. 3-(4-tert-butylsulfanvIthieno[3,2-d]pyrimidin-7-yl)-5-(hydroxymethyl)cyclopent-2-en-1-one Lithium bis(trimethylsilyl)amide (1.0 M in THF, 0.66 mL, 0.66 mmol) is added to a solution of 3-(4-tert-butylsulfanylthieno[3,2-d]pyrimidin-7-yl)cyclopent-2-en-1-one (0.10 g, 0.33 mmol) in THF (2.0 mL) at -78 C. and the resulting mixture is stirred at this temperature over 1 hr. To this mixture, a solution of 1-hydroxymethylbenzotriazole (0.10 g, 0.66 mmol) in a mixture of THF (1.0 mL) and hexamethylphosphoramide (HMPA, 0.10 mL) is added. The resulting mixture is stirred at -78 C. for 2 hr then quenched with saturated aqueous NH4Cl (1.0 mL). THF is removed in vacuo and the resulting residue is taken up in dichloromethane, dried with Na2SO4, filtered and concentrated in vacuo. The crude is purified by chromatograph to give desired title compound as a solid (0.08 g, 69%). LCMS (m/z) M+H=335.4; tR=2.89 min.

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 28539-02-8, 1-(Hydroxymethyl)benzotriazole.

Reference:
Patent; Wang, Zhong; Smith, Emilie D.; Veal, James M.; Huang, Kenneth H.; Atkinson, Robert N.; Jiang, Rong; US2012/77814; (2012); A1;,
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Application of 202865-66-5, 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.202865-66-5, name is (2-Bromo-5-fluorophenyl)methanol, molecular formula is C7H6BrFO, molecular weight is 205.02, as common compound, the synthetic route is as follows.

General procedure: 2-Halobenzyl tosylates 1a-e were prepared from the corresponding 2-halobenzyl alcohols according to the procedure of Wallace et al.38 p-TsCl (3.2 mmol) was added to a stirred solution of the 2-halobenzyl alcohol (2.7 mmol) in Et2O (15 mL) at 0 C. After addition of freshly powdered KOH (27 mmol) in small portions, the reaction mixture was stirred for 3 h at room temperature. The ethereal solvent was removed in vacuo and the reaction mixture was poured into water (50 mL). The precipitate formed was collected by filtration and purified by flash chromatography over silica gel.

Statistics shows that 202865-66-5 is playing an increasingly important role. we look forward to future research findings about (2-Bromo-5-fluorophenyl)methanol.

Reference:
Article; Omar, Mohamed A.; Conrad, Juergen; Beifuss, Uwe; Tetrahedron; vol. 70; 35; (2014); p. 5682 – 5695;,
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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. 16545-68-9, name is Cyclopropanol. A new synthetic method of this compound is introduced below., Formula: C3H6O

Water (300 ml),Cyclopropanol (500 ml),N, N-diethyl-2,3,3,3-tetrafluoropropanamide (900 g, 4.47 mol),98% sulfuric acid (600 ml) was placed in the reaction flask,The temperature was raised to 130 C and refluxed for 12 hours.Reaction completed,Atmospheric distillation,Fractions of around 127 C were collected to give cyclopropyl 2,3,3,3-tetrafluoropropionate,The yield was 90%Purity 98.6%.

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, 16545-68-9, Cyclopropanol.

Reference:
Patent; Zhao, Manliang; (9 pag.)CN106278887; (2017); A;,
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Application of 7589-27-7 ,Some common heterocyclic compound, 7589-27-7, molecular formula is C8H9FO, 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.

[0197] To a stirred solution of the 2-(4-fluorophenyl) ethanol (200 mg, 1.43 mmol) in MeCN (4 mL) was added 2-iodoxybenzoic acid (1.2 g, 4.3 mmol). The resulting mixture was heated to 80 C. After stirred for 2 hrs, the mixture was cooled to room temperature, and filtered through a pad of celite. The filtrate was concentrated to afford the title compound as a pale yellow oil (197 mg, 100%) which was used in the next step without further purification. 1HNMR (400 MHz, CDCI3) 6 9.77 (t, J = 2.0 Hz, 1H), 7.22-7.14 (m, 2H), 7.10-7.01 (m, 2H), 3.70 (t, J = 2.0 Hz, 2H).

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. 7589-27-7, 2-(4-Fluorophenyl)ethanol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; RUGEN HOLDINGS (CAYMAN) LIMITED; SHAPIRO, Gideon; (157 pag.)WO2016/126869; (2016); A1;,
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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 144-19-4, name is 2,2,4-Trimethyl-1,3-pentanediol. This compound has unique chemical properties. The synthetic route is as follows. COA of Formula: C8H18O2

EXAMPLE 5 1,3-bis-(4-nitrophenoxy)-2,2,4-trimethylpentane 146 g (1 mol) 2,2,4-trimethyl-1,3-dihydroxypentane, 346.5 g (2.2 mols) 4-nitrochlorobenzene and 140 g powdered sodium hydroxide were reacted using the same procedure described in Example 1 in 600 ml DMSO. Yield: 265 g (68.3% of the theoretical) Mp.: 95-96 C. (beige powder)

With the rapid development of chemical substances, we look forward to future research findings about 144-19-4.

Reference:
Patent; Bayer Aktiengesellschaft; US4820866; (1989); A;,
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Reference of 534-03-2, 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. 534-03-2, name is 2-Aminopropane-1,3-diol. A new synthetic method of this compound is introduced below.

45.6 g of 2-amino-1,3-dihydroxypropane was mixed with 113 mL of formic acid solution,Then add 90 mL of 37% formaldehyde solution.The mixture was stirred at room temperature for 2h,The reaction was then warmed to 80 C,And kept at this temperature overnight.When the temperature reaches 80 , there will be a lot of gas discharge. After the reaction was completed, it was cooled to room temperature. 60 mL of 37% strength hydrochloric acid was added and stirred for 1 h.Solid sodium hydroxide was added to adjust the pH of the solution to 12, the mixture was distilled under reduced pressure,Add a lot of methanol.At this point the white precipitate generated in the system filter, the filtrate was distilled off under reduced pressure,The concentrated initial product was dissolved in trichloromethane and dried over anhydrous magnesium sulfate.In the conditions of 100 -102 / 100Kpa by distillation,40.9 g was obtained2-N, N-dimethyl-1,3-dihydroxypropane,The yield was 68.65%.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,534-03-2, 2-Aminopropane-1,3-diol, and friends who are interested can also refer to it.

Reference:
Patent; University of Science and Technology Beijing; Gong Aijun; Yang Jing; Qiu Lina; Xie Yanping; Zhao Yunbo; (9 pag.)CN105198773; (2017); B;,
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