Author: tianli

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.100058-61-5, name is 3-(Benzyloxy)cyclobutanol, molecular formula is C11H14O2, molecular weight is 178.23, as common compound, the synthetic route is as follows.category: alcohols-buliding-blocks

Step 2. 3-(benzyloxy)cyclobutyl methanesulfonate [0641] A 100-mL round-bottom flask was charged with 3-(benzyloxy)cyclobutanol (1.83 g, 10.3 mmol), dichloromethane (20 mL) and triethylamine (2.15 mL, 15.4 mmol), and the solution was cooled to 0 C. Methanesulfonyl chloride (1.20 mL, 1.77 g, 15.4 mmol) was added dropwise, and the resulting solution stirred for 30 min at 0 C. The reaction mixture was poured into water (30 mL) and extracted with dichloromethane (2 x 30 mL). The combined organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated to afford 3-(benzyloxy)cyclobutyl methanesulfonate (2.60 g, 99%) as a light yellow solid. MS (ESI, pos. ion) m/z 257[M+H]+.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,100058-61-5, 3-(Benzyloxy)cyclobutanol, and friends who are interested can also refer to it.

Reference:
Patent; BAIR, Kenneth W.; HERBERTZ, Torsten; KAUFFMAN, Goss Stryker; KAYSER-BRICKER, Katherine J.; LUKE, George P.; MARTIN, Matthew W.; MILLAN, David S.; SCHILLER, Shawn E. R.; TALBOT, Adam C.; WO2015/74064; (2015); A2;,
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Adding a certain compound to certain chemical reactions, such as: 397323-70-5, (2-Amino-3-bromophenyl)methanol, 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, 397323-70-5, blongs to alcohols-buliding-blocks compound. Formula: C7H8BrNO

Step 2.; The benzylic alcohol (3.56g, 17.7 mmol) was taken up in DCM (80 mL) and treated with manganese dioxide (35g). The heterogeneous mixture was stirred at room temp for Ih, filtered and concentrated to provide the aldehyde (3.27g).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,397323-70-5, its application will become more common.

Reference:
Patent; GILEAD SCIENCES, INC.; WO2007/11658; (2007); A1;,
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Adding a certain compound to certain chemical reactions, such as: 616-29-5, 1,3-Diaminopropan-2-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, Formula: C3H10N2O, blongs to alcohols-buliding-blocks compound. Formula: C3H10N2O

Boc-protected bisamino alcohol 2. A solution of bis-amine 1 (3.00 g, 33.3 mmol) was dissolved in a minimal amount of water (1 mL) and added to a solution of di-tert-butyl dicarbonate (16.0 g, 73.3 mmol) in dioxane (400 mL). The reaction mixture was stirred for 24 hours at room temperature under nitrogen. The solvent was removed under reduced pressure. The resulting solid was dissolved in dichloromethane (300 mL), washed with water (300 mL), dried over MgSO4, and filtered. The solvent was removed under reduced pressure to afford a white solid. The white solid was washed with ether and filtered (9.18 g, 98%). 1H NMR (CDCl3): delta 5.34-5.30 (br, 2NH, 2H), 4.03 (s, 1H, OH), 3.73-3.68 (m, 1H, CH), 3.18-3.14 (m, 4H, 2CH2,), 1.39 (s, 18H, 6CH3). 13C NMR (CDCl3): delta 157.2, 79.71, 70.67, 43.46, 28.39.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,616-29-5, 1,3-Diaminopropan-2-ol, and friends who are interested can also refer to it.

Reference:
Patent; Tew, Gregory; Madkour, Ahmad E.; Lienkamp, Karen; Musante, Ashlan Marie; US2010/317870; (2010); A1;,
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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. 13674-16-3, name is Methyl 2-hydroxy-3-phenylpropanoate, molecular formula is C10H12O3, 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: Methyl 2-hydroxy-3-phenylpropanoate

EXAMPLE 17 (R)-2-[2,6-Dibromo-4-(dibenzothiophen-1-yl)-phenoxy]-3-phenyl-propionic acid methyl ester Diethylazodicarboxylate (DEAD, 0.077 mL, 1.15 mmol) was added to a stirred, room temperature suspension of 2,6-Dibromo-4-(dibenzothiophen-1-yl)-phenol (0.250 g, 0.576 mmol), (S)-2-hydroxy-3-phenylpropionic acid, methyl ester (0.208 g, 1.15 mmol), triphenylphosphine (0.302 g, 1.15 mmol) in benzene (3 mL) under a dry nitrogen atmosphere. Dissolution occurred and the solution was heated in an 80 C. oil bath for 16 h. More diethylazodicarboxylate (DEAD, 0.039 mL, 0.576 mmol), (S)-2-hydroxy-3-phenylpropionic acid, methyl ester (0.104 g, 0.576 mmol) and triphenylphosphine (0.151 g, 0.576 mmol) were added and the solution was stirred an additional 4 h. Upon cooling to room temperature, the reaction mixture was diluted with ether and silica gel was added. The reaction mixture was concentrated and the silica adsorbate was flash chromatographed (98:2 petroleum ether:ethyl acetate) to provide the title compound as a white solid (0. 293 g, 85%): NMR (CDCl3): delta 7.89 (dd, J=8, 1 Hz, 1H), 7.85 (ddd., J=8, 1, 1 Hz, 1H), 7.64 (d, J=2 Hz, 1H), 7.63 (d, J=2 Hz, 1H), 7.47 (dd, J=9, 8 Hz, 2H), 7.41-7.17 (m, 8H), 5.13 (dd, J=8, 6 Hz, 1H), 3.71 (s, 3H), 3.55 (dd, J=7, 4 Hz, 1H), 3.53 (dd, J=8, 4 Hz, 1H); MS (EI): [M+], 2 bromine isotope pattern, 594 (20%), 596 (40%) 598 (25%); Anal. Calc. for C28H20Br2O3S: C, 56.39, H, 3.38, N, 0.00. Found: C, 56.27, H, 3.21, N, 0.09.

With the rapid development of chemical substances, we look forward to future research findings about 13674-16-3.

Reference:
Patent; American Home Products Corporation; US6001867; (1999); A;,
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Adding a certain compound to certain chemical reactions, such as: 62037-46-1, 1-Amino-3-chloropropan-2-ol hydrochloride, 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, 62037-46-1, blongs to alcohols-buliding-blocks compound. Computed Properties of C3H9Cl2NO

The reaction flask was charged with 116.8 g of compound II (0.80 mol)191.8 g of Boc2O (0.88 mol) and 1500 ml of methanol, stirred,And 1200 ml of an aqueous solution containing 80.6 g of sodium hydrogencarbonate (0.96 mol)And then reacted at room temperature for 3 hours. After the reaction was complete, the methanol was removed by concentration,The residue was extracted with 2000 ml of methylene chloride and the dichloromethane layer was washed with water,And finally dried over anhydrous sodium sulfate; filtered, the filtrate was concentrated to dryness,174.3 g of an oil was obtained, and 1200 ml of petroleum ether was added to the oil to freeze the crystals,The filter cake was washed with petroleum ether to give 161.7 g of the white solid, compound III; mp 48-51 C, molar yield: 96.71% (calculated as compound II).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,62037-46-1, its application will become more common.

Reference:
Patent; Changzhou Ruibo Biological Technology Co., Ltd.; Wei Feng; Wu Zongquan; Ge Erpeng; (12 pag.)CN104292222; (2017); B;,
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Reference of 583-03-9, 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.583-03-9, name is 1-Phenylpentan-1-ol, molecular formula is C11H16O, molecular weight is 164.24, as common compound, the synthetic route is as follows.

At room temperature, in a 50 ml round-bottom flask is sequentially added in the 1 – benzene amyl alcohol (0.164 g, 1 mmol), benzoic acid (0.183g, 1.5 mmol), NBS (0.356g, 2 mmol) and 1, 4 – dioxane (2 ml). In the 60 C stirring 1 hour, then adding DBU (0.304 g, 2 mmol), continue to reaction 4 hours (TLC detection reaction). Then, stopping the reaction, concentrated under reduced pressure, to obtain crude product. Finally petroleum ether and ethyl acetate mixed eluent flushing, rapid column chromatography (silica gel column) to obtain the corresponding product alpha – acyloxy ketone compound (yellow liquid 0.260g, yield 92%).

The chemical industry reduces the impact on the environment during synthesis 583-03-9, I believe this compound will play a more active role in future production and life.

Reference:
Patent; Qufu Normal University; Wang, Hua; Wei, Wei; Zhu, Minghui; Cui, Huanhuan; (19 pag.)CN106518663; (2017); A;,
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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. 534-03-2, name is 2-Aminopropane-1,3-diol, molecular formula is C3H9NO2, 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. HPLC of Formula: C3H9NO2

To a solution of compound 1 (20.0 g) in H20 (100 mL) were added Na2C03 (78 g) and compound 2 (21.5 g). The reaction mixture was stirred at rt for 16 h. Compound 3 (15.0 g, yield 58%) was obtained after standard work up procedure as a white solid.

With the rapid development of chemical substances, we look forward to future research findings about 534-03-2.

Reference:
Patent; SYNBLIA THERAPEUTICS, INC.; XIE, Yinong; BABISS, Lee, E.; (89 pag.)WO2019/89422; (2019); A1;,
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Synthetic Route of 303043-91-6, 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.303043-91-6, name is 3-Fluoro-2-methoxybenzenemethanol, molecular formula is C8H9FO2, molecular weight is 156.1543, as common compound, the synthetic route is as follows.

a 1-(Chloromethyl)-3-fluoro-2-methoxy-benzene A solution of 3-fluoro-2-methoxy-benzenemethanol (WO 20000419) (0.50 g) and thionyl chloride (0.47 ml) in dichloromethane (30 ml) was stirred for 2 hours then concentrated in-vacuo to give the subtitled compound, which was used directly in the next step.

The chemical industry reduces the impact on the environment during synthesis 303043-91-6, I believe this compound will play a more active role in future production and life.

Reference:
Patent; Bonnert, Roger; Gardiner, Stewart; Hunt, Fraser; Walters, Iain; US2003/55250; (2003); A1;,
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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. 100-37-8, name is 2-(Diethylamino)ethanol. A new synthetic method of this compound is introduced below., Recommanded Product: 2-(Diethylamino)ethanol

General procedure: 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)cyclopentane-1-carboxylate hydrochlorides 7a-7f were synthesized as described above for 6a-6e from 7 mmol of amino alcohol 5a-5f and 1.87 g (7 mmol) of acid chloride 3 in the presence of 0.7 g (7 mmol) of triethylamine. A solution of 1.3 g (5 mmol) of acid chloride 3 in 30 mL of anhydrous benzene was added with shaking to a mixture of 5 mmol of diamine 4a-4e and 0.5 g (5 mmol) of triethylamine in 50 mL of anhydrous benzene. The mixture was left to stand for 2 h at room temperature and was then refluxed for 10 h. After cooling, the mixture was treated with 3 mL of 15% aqueous sodium hydroxide with shaking, and the organic layer was separated, washed with water until neutral reaction, and dried. The solvent was distilled off, the residue was dissolved in diethyl ether, and a solution of dry HCl in diethyl ether was added. The precipitate was filtered off and recrystallized from ethanol.

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, 100-37-8, 2-(Diethylamino)ethanol.

Reference:
Article; Arustamyan, Zh. S.; Markaryan; Aghekyan; Nazaryan; Hakobyan; Paronikyan; Minasyan; Russian Journal of Organic Chemistry; vol. 55; 6; (2019); p. 796 – 799; Zh. Org. Khim.; vol. 55; 6; (2019); p. 896 – 900,5;,
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In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 29908-11-0, name is (1,4-Dioxan-2-yl)methanol, the common compound, a new synthetic route is introduced below. Formula: C5H10O3

[0284] An oven dried multineck round bottom flask equipped with a condenser and an inlet septum under N2 is loaded with NaH (1.25 equiv., 60% in mineral oil) and dry THF (2.67 mL/mmol). An alcohol (1.2 equiv.) is added dropwise and the resulting mixture is stirred at room temperature for 20 min and subsequently heated at 50 C for 20 min. Then 4-chloro-6,7-dihydrobenzo[a]quinolizin-2-one derivative is added (1.0 equiv.) as a dry solid to the alkoxide mixture (any material that can not be transferred as such is dissolved in dry THF (1.3 mL/mmol) and added to the mixture). The mixture is briefly purged with N2 and heated at 70 C until all starting material is consumed. The mixture is cooled down to room temperature and quenched with saturated aq. NaHCO3. The mixture is then concentrated in vacuo and partitioned between DCM and brine. The aqueous layer is extracted once with DCM and combined organics are dried over Na2SO4 and concentrated to dryness. The crude product is dissolved in MeCN and refluxed for 15 min. The mixture is cooled down to room temperature and the precipitate is separated by filtration. The precipitate is discarded and the filtrate is washed with pentane. The MeCN phase is concentrated to dryness affording the desired product.

The synthetic route of 29908-11-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GALAPAGOS NV; MENET, Christel, Jeanne, Marie; DOYON, Julien, Georges, Pierre-Olivier; CLAES, Pieter, Isabelle, Roger; ALLART, Brigitte; DE WACHTER, Maxim, Maria, Paul; TRICARICO, Giovanni, Alessandro; (168 pag.)WO2016/169911; (2016); A1;,
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