Month: August 2021

Application of 6338-55-2 ,Some common heterocyclic compound, 6338-55-2, molecular formula is C6H15NO3, 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.

See FIG. 22 for the synthesis of DBCO-PEG-OH (compound [IV]). To a solution of 2- (2- (2-aminoethoxy) ethoxy) ethan-1-ol (compound [I], 0.267 g, 1.789 mmol) in 2 ml anhydrous DCM at RT was added DBCO- (Compound [II], 0.24 g, 0.596 mmol) in DMF (5 mL) was slowly added.After the addition is complete,The reaction solution was stirred for 2 hours at RT. HPLC showed complete disappearance of the succinimide. The reaction was maintained in the dark at -20 C in the freezer.The next morning,The reaction solution was warmed below RT and diluted with 3 ml DCM.Silica gel (5 g) was added and the slurry was evaporated to dryness on a rotary evaporator.Loading the remaining powder onto the ISCO loading cartridge,Purification by column chromatography (12 g silica gel column, 5-20% methanol / DCM)0.2 g of DBCO-PEG-OH (compound [IV]) was obtained. Yield: 77%

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,6338-55-2, its application will become more common.

Reference:
Patent; Roseuwel Bio Tekeu Nol Ro Jiseu In Kopo Lei Tideu; Me Ri-meon-bae-ri-el; Ga I-jeo-tim; Mol Ra-pol-deo-beul-yu; Ra I-deu-a-us-de-ril; (101 pag.)KR2019/34320; (2019); A;,
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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. 1777-82-8, name is (2,4-Dichlorophenyl)methanol, the common compound, a new synthetic route is introduced below. HPLC of Formula: C7H6Cl2O

General procedure: In a general process, the photocatalytic activity of nanostructureswas investigated by oxidation of aromatic alcohol. In typically,0.1 mmol of alcohol was added to 1.5 ml of solvent in Pyrex glass celland stirred for 5 min. Then, 10 mg of photocatalyst was dispersed insolution and magnetically stirred in the dark for 15 min to reach anequilibrium between adsorption-desorption. Photocatalytic reactionswere performed by irradiation with an LED lamp (5 W). To control thetemperature during the oxidation reaction, the water circulation wasapplied to cooling of the reaction mixture. During the photocatalyticprocess, the reactor was exposed to air to ensure that enough oxygen isprovided for the reaction. The progress of the reaction was monitoredusing the TLC by periodic sampling. After completion of the reaction,the catalyst was separated from the suspension by centrifuging(3500 rpm) and washed with solvent to separate all of the residualmaterials.

The synthetic route of 1777-82-8 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Safaei, Elham; Mohebbi, Sajjad; Journal of Photochemistry and Photobiology A: Chemistry; vol. 371; (2019); p. 173 – 181;,
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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. 13826-35-2, name is (3-Phenoxyphenyl)methanol. A new synthetic method of this compound is introduced below., HPLC of Formula: C13H12O2

Example 16 – (3-Phenoxyphenyl)methyl 3-[(Z)-2-chloro-3,3,3-trifluoro-prop-1-enyl]-2,2- dimethyl-cyclopropanecarboxylate 13 A solution of 3-[(Z)-2-chloro-3,3,3-trifluoro-prop-1-enyl]-2,2-dimethyl-cyclopropanecarbonyl chloride (242mg, 1.1 eq) in toluene (6ml_) was added dropwise to a solution of (3- phenoxyphenyl)methanol (170mg, 1 eq) and pyridine (68muIota_, 1 eq) in toluene (6ml_). The reaction mixture was stirred overnight at room temperature after which time TLC analysis showed the reaction had gone to completion. The reaction mixture was diluted with ethyl acetate (15ml_) and washed with water (2 x 10ml_) and brine (10ml_) before being dried over MgS04 and the solvent removed in vacuo. The residue was purified by flash chromatography (solvent 9: 1 hexane/ethyl acetate) to afford the product as a clear oil (262mg, 73 %). 1 H NMR deltaEta (CDCIs, 300 MHz): 7.25 (m, 4H), 6.93(m, 6H), 5.00 (dd, J= 15.6, 3.3 Hz, 2H), 2.10 (t, J= 8.4Hz, 1 H), 1.95 (d, J= 8.4Hz, 1 H), 1.22 (s, 3H), 1.20 (s, 3H); ESI-MS 447.1 [MNa]+.

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, 13826-35-2, (3-Phenoxyphenyl)methanol.

Reference:
Patent; REDX PHARMA LIMITED; THOMPSON, William; JACKSON, Peter; LINDSAY, Derek; SCREEN, Thomas; MOLTON, Benjamin; URCH, Christopher; WO2013/136073; (2013); A1;,
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Electric Literature of 261723-32-4, Adding some certain compound to certain chemical reactions, such as: 261723-32-4, name is (3-Bromo-2-fluorophenyl)methanol,molecular formula is C7H6BrFO, 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 261723-32-4.

6.4 {2-Fluoro-3-[2-(3-methoxyphenyl)imidazo[1,2-a]pyridin-6-yl]phenyl}methanol 300 mg of (3-bromo-2-fluorophenyl)methanol are dissolved in 15 ml of toluene and 5 ml of ethanol and degassed under a stream of argon for 10 min. 101 mg of tetrakis(triphenylphosphine)palladium, 580 mg of 2-(3-methoxyphenyl)imidazo[1,2-a]pyridine-6-boronic acid and 5 ml of a 2M sodium carbonate solution are subsequently added thereto. The mixture is heated at 80 C. for 16 hours and then, after cooling to ambient temperature, concentrated under reduced pressure. The residue is taken up between water and ethyl acetate and then the organic phase is separated, dried and concentrated under reduced pressure. The residue is purified by chromatography on silica gel, elution being carried out with a dichloromethane/ethyl acetate mixture. 254 mg of compound are obtained. M.p.=143-144 C. 1H NMR spectrum (d6-DMSO, delta in ppm): 3.85 (s, 3H); 4.65 (d, 2H); 5.35 (t, 1H); 6.95 (d, 1H); from 7.3 to 7.4 (m, 2H); 7.45 (d, 1H); from 7.5 to 7.65 (m, 4H); 7.7 (d, 1H); 8.5 (s, 1H); 8.75 (s, 1H). M+H=349.

According to the analysis of related databases, 261723-32-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; sanofi-aventis; US2011/65699; (2011); A1;,
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Electric Literature of 3319-15-1 ,Some common heterocyclic compound, 3319-15-1, molecular formula is C9H12O2, 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.

General procedure: To a mixture of 1,3-dicarbonyl compound (2 mmol),alcohol or styrene derivatives (1 mmol), and 0.6 gSBNPSA, was added 2 cm3 nitromethane as solvent. Themixture was stirred under reflux conditions and the reactionwas followed by TLC. After completion, the mixture wasfiltered, and the remaining was washed with warm ethanolto separate catalyst and nitromethane was removed underreduced pressure. Then, the crude products were recrystallizedfrom mixture of dichloromethane and n-hexane.All the synthesized products were known and characterized by comparison of their spectral and physical data withthose reported in literature.

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. 3319-15-1, 1-(4-Methoxyphenyl)ethanol, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Karimzadeh, Morteza; Saberi Asl, Hamed; Hashemi, Hajar; Saberi, Dariush; Niknam, Khodabakhsh; Monatshefte fur Chemie; vol. 149; 12; (2018); p. 2237 – 2244;,
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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.3279-95-6, name is 2-(Aminooxy)ethanol, molecular formula is C2H7NO2, molecular weight is 77.08, as common compound, the synthetic route is as follows.Formula: C2H7NO2

Step C Preparation of 2-(2-chloro-4-iodo-phenylamino)-3,4-difluoro-N-(2-hydroxy-ethoxy)-benzamide To a solution of the product of Example 6, Step B, 2-(2-chloro-4-iodophenylamino)-3,4-difluorobenzoic acid pentafluorophenyl ester (10.0 g, 17.4 mmol), in anhydrous dimethylformamide (36 mL) was added 2-(aminooxy)-ethanol [prepared by the literature procedure: Dhanak, D.; Reese, C. B. J. Chem. Soc., Perkin Trans. 1 1987, 2829] (1.6 g, 20.8 mmol) and N,N-diisopropylethylamine (6.0 mL, 34.8 mmol). The resultant solution was stirred at ambient temperature for 16 h. The reaction mixture was concentrated to 20% volume then diluted with ethyl acetate (360 mL). The resultant solution was washed with water (6*60 mL) and brine (2*60 mL). The organics were dried over anhydrous magnesium sulfate and concentrated under reduced pressure to afford a white solid that was purified on silica gel. Elution with ethyl acetate-methanol (9:1) afforded 2-(2-chloro-4-iodo-phenylamino)-3,4-difluoro-N-(2-hydroxy-ethoxy)-benzamide (7.31 g, 90%) as a white solid. Recrystallization from methanol afforded analytically pure material: m.p. 173-175 C.; 1H NMR (400 MHz, DMSO-d6) delta 11.93 (br s, 1H), 8.85 (br s, 1H), 7.76 (d, J=1.7 Hz, 1H), 7.48 (dd, J=8.6, 1.7 Hz, 1H), 7.44 (dd, J=8.5, 6.2 Hz, 1H), 7.25 (dt, J=8.5, 9.3 Hz, 1H), 6.58 (dd, J=8.5, 6.4 Hz, 1H), 4.70 (br s, 1H), 3.86 (br s, 2H), 3.56 (br d, J=3.9 Hz, 2H); MS (APCI+)=469.0; MS (APCI-)=467.0; Anal. Calcd/found for C15H12ClF21N2O3: C, 38.45/38.60; H, 2.58/2.53; N, 5.98/5.91; F, 8.11/8.08; I, 27.08/27.43. aa0-5aa

At the same time, in my other blogs, there are other synthetic methods of this type of compound,3279-95-6, 2-(Aminooxy)ethanol, and friends who are interested can also refer to it.

Reference:
Patent; Barrett, Stephen Douglas; Kaufman, Michael David; Rewcastle, Gordon William; Spicer, Julie Ann; US2003/232889; (2003); A1;,
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Adding a certain compound to certain chemical reactions, such as: 26021-57-8, 3,4-Dihydro-2H-benzo[b][1,4]oxazin-6-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, 26021-57-8, blongs to alcohols-buliding-blocks compound. COA of Formula: C8H9NO2

General procedure: To a mixture of 9 (100mg, 0.74mmol) (the general procedure for the synthesis of intermediate 9 was presented in supporting information), 3-chlorobenzaldehyde (104mg, 0.74mmol) and ethyl 2-cyanoacetate (83muL, 0.78mmol) in anhydrous EtOH (5mL) was added piperdine (136muL, 1.48mmol). The reaction mixture was stirred for 16hat 80C under N2 atmosphere. The resulting reaction mixture was evaporated to dryness under reduced pressure. The residue was purified by flash column chromatography eluting with CH2Cl2/MeOH (200:1-100:1, v/v) to afford the title compound (9a) as a slight yellow solid (210mg, 77% yield).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,26021-57-8, its application will become more common.

Reference:
Article; Zhang, Huijun; Fang, Xiong; Meng, Qian; Mao, Yujia; Xu, Yan; Fan, Tingting; An, Jing; Huang, Ziwei; European Journal of Medicinal Chemistry; vol. 157; (2018); p. 380 – 396;,
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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.79418-41-0, name is 3-Amino-7-hydroxy-2H-chromen-2-one, molecular formula is C9H7NO3, molecular weight is 177.1568, as common compound, the synthetic route is as follows.Recommanded Product: 79418-41-0

A portion of 7-diethylaminocoumarin-3-aldehyde (247 mg, 1 mmol) and 3-amino-7-hydroxycoumarin (195 mg, 1.1 mmol) were combined in hot absolute ethanol (20 mL) to yield a scarlet precipitate for a moment. The solution was stirred under reflux conditions for 6 h, and the precipitate was filtrated, washed with hot absolute ethanol three times, then recrystallized with DMF/H2O (v/v, 1/3) to get scarlet crystal L (347 mg, 0.86 mmol) in 86% yield. IR (KBr, cm-1): 2966, 2927, 1718, 1620, 1349, 1506, 1456, 1420, 845, 811, 770, 729, 693. 1H NMR (DMSO-d6, 400 MHz, delta): 10.54(s, 1H, OH), 9.04(s, 1H, NCH), 8.56(s, 1H, ArH), 7.81(s, 1H, ArH), 7.70(d, 1H, J = 12 Hz, ArH), 7.58(d, 1H, J = 8 Hz, ArH), 6.81 (t, 1H, J = 8 Hz, ArH), 6.77 (s, 1H, ArH), 6.61(s, 1H, ArH), 3.49(q, 4H, J = 8 Hz, CH2CH3), 1.16(t, 6H, J = 8 Hz, CH2CH3). Anal. Calcd for C23H20N2O5: C 68.31%, H 4.98%, N 6.93%, Found: C 68.55%, H 5.04%, N 6.66%.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,79418-41-0, 3-Amino-7-hydroxy-2H-chromen-2-one, and friends who are interested can also refer to it.

Reference:
Article; Wang, Lingyun; Ye, Decheng; Cao, Derong; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; vol. 90; (2012); p. 40 – 44;,
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Related Products of 2516-33-8 ,Some common heterocyclic compound, 2516-33-8, molecular formula is C4H8O, 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.

General procedure: The gas-phase selective oxidation of alcohols on these catalysts with molecular oxygen was carried out on a fixed-bed quartz tube reactor (i.d., 16 mm) under atmospheric pressure as described previously [14,15,26,27]. Circular chips (16.1 mm diameter) of the microfibrous-structured Au/Ni-fiber catalysts were punched down from their large sheet sample and packed layer-up-layer into the tube reactor with total mass of 0.3 g. Note that the diameter of 0.1 mm larger than the i.d. of the tubular reactor was retained deliberately to avoid the appearance of the gap between the reactor wall and the edges of the catalyst chips thereby preventing the gas bypassing. Alcohols were fed continuously using a high-performance liquid pump, in parallel with O2 (oxidant) and N2 (diluted gas) feeding using the calibrated mass flow controllers, into the reactor heated to the desired reaction temperature. The organic phase of the liquid effluent was collected for analyzing by an HP 5890 gas chromatography-flame ionization detector (GC-FID) with a 60-m HP-5 ms capillary column. The gas-phase products such as H2, COx, and C1-C3 hydrocarbons were analyzed by an HP-5890 GC with thermal conductivity detector (TCD) and a 30-m AT-plot 300 capillary column. Reaction temperature, WHSV, and alcoholic hydroxyl (O2/ol) were varied in range from 220 to 380 C, 10 to 70 h-1, and 0.4 to 1.2, respectively. Prior to the reaction testing, as-prepared catalysts were all activated by performing the benzyl alcohol oxidation at a high temperature of 380 C for 1 h, using molar ratio of O2 to O2/ol = 0.6 and WHSV = 20 h-1.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,2516-33-8, its application will become more common.

Reference:
Article; Zhao, Guofeng; Deng, Miaomiao; Jiang, Yifeng; Hu, Huanyun; Huang, Jun; Lu, Yong; Journal of Catalysis; vol. 301; (2013); p. 46 – 53;,
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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 623-69-8, name is 1,3-Dimethoxypropan-2-ol. This compound has unique chemical properties. The synthetic route is as follows. HPLC of Formula: C5H12O3

To a solution of 3-bromophenol (6g, 34.7mmol) and 1,3-dimethoxypropan-2-ol (5.OOg,41.6mmol) in THE (l5OmL) was added triphenylphosphine (13.64g, 52.Ommol) and the reaction mixture cooled to 0C followed by dropwise addition of DIAD (6.74mL, 34.7mmol). The reaction was allowed to warm to room temperature, then stirred for 12h. The reaction mixture was concentratedvacua. The obtained residue was dissolved in EtOAc (SOmL), washed with water (SOmL) and brine(SOmL), dried over Na24, concentrated in vacua and subjected to silica column chromatography(SOg column), eluting with 20% EtOAc in petroleum ether. The relevant fractions were combined andconcentrated in vacua affording the title compound (4.Og, 42%) as a yellow liquid: MS ES+ve m/z275, 277 (M–H).

With the rapid development of chemical substances, we look forward to future research findings about 623-69-8.

Reference:
Patent; GLAXOSMITHKLINE INTELLECTUAL PROPERTY DEVELOPMENT LIMITED; ANDERSON, Niall Andrew; CAMPBELL-CRAWFORD, Matthew Howard James; HANCOCK, Ashley Paul; LEMMA, Seble; PRITCHARD, John Martin; PROCOPIOU, Panayiotis Alexandrou; REDMOND, Joanna Mary; SOLLIS, Steven Leslie; (77 pag.)WO2017/162572; (2017); A1;,
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