Tag: M.W=0-100

Reference of 33420-52-9, 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. 33420-52-9, name is 2,2-Difluoropropan-1-ol, molecular formula is C3H6F2O, 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.

7-[ 1 -(tert-butoxycarbonyl)piperidin-4-yl] -2-methyl-5-oxo-4,5-dihydropyrazolo[ 1 ,5-a]pyrimidine-3- carboxylic acid (100 mg, 266 muiotaetaomicron) was dissolved in tetrahydrofurane (5.0 ml, 62 mmol) and Nu,Nu’- Carbonyldiimidazole (86.2 mg, 531 muiotaetaomicron) was added. The mixture was heated at reflux for 1.5 h. Solvents were removed and 2,2-difluoropropan-l-ol (3.01 g, 31.4 mmol) was added. The mixture was heated at reflux for 18h and then purified by preparative HPLC (Method: column: Reprosil CI 8; 10 muiotaeta; 125×30 mm / flow: 50 ml/min / solvents: A = water (0,01% formic acid), B = acetonitrile / gradient: 0.00-5.00 min = 10%B, 6.50min = 20%B, 17.0-19.75min = 100%B, 19.75.00-23.00min = 90%B). Evaporation of the combined product fractions yielded the title compound (105 mg, 99 % purity, 86 % of theory). LC-MS (Method 1 IB): Rt = 2.03 min; MS (ESIneg): m/z = 453 [M-H]

According to the analysis of related databases, 33420-52-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; ELLERMANN, Manuel; VALOT, Gaelle; CANCHO GRANDE, Yolanda; HAssFELD, Jorma; KINZEL, Tom; KOeBBERLING, Johannes; BEYER, Kristin; ROeHRIG, Susanne; SPERZEL, Michael; STAMPFUss, Jan; MEYER, Imke; KOeLLNBERGER, Maria; BURKHARDT, Nils; SCHLEMMER, Karl-Heinz; STEGMANN, Christian; SCHUHMACHER, Joachim; WERNER, Matthias; HEIERMANN, Joerg; HENGEVELD, Willem Jan; (764 pag.)WO2016/71216; (2016); A1;,
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Related Products of 3279-95-6, 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 3279-95-6, name is 2-(Aminooxy)ethanol. This compound has unique chemical properties. The synthetic route is as follows.

A solution of (86.2) (120 mg, 0.287 mmol) and 2-(aminooxy)ethanol (44.2 mg, 0.573 mmol) in MeOH (10 ml) was added drops of HCl (3 N) to reach pH about 5 and then stirred at rt for overnight. Solvent was evaporated and the residue was purified by preparative base HPLC (gradient eluent A B from 20/80 to 95/5. mobile phase A: NH4OH/CH3CN 0.05%; mobile phase B: NH4OH/H20 0.05%) to afford the title compound (20 mg, yield 15%).

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 3279-95-6, 2-(Aminooxy)ethanol.

Reference:
Patent; NOVARTIS AG; CHEN, Chao; DENG, Haibing; GUO, Haibing; HE, Feng; JIANG, Lei; LIANG, Fang; MI, Yuan; WAN, Huixin; XU, Yao-Chang; YU, Hongping; ZHANG, Ji Yue (Jeff); WO2013/38362; (2013); A1;,
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Reference of 616-29-5, Adding some certain compound to certain chemical reactions, such as: 616-29-5, name is 1,3-Diaminopropan-2-ol,molecular formula is C3H10N2O, 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 616-29-5.

1,3-diaminopropan-2-ol (3 g, 0.033 mol) was dissolved in methanol (300 ml) followed by the addition of triethylamine (33 ml dropwise) and di-tert-butyl dicarbonate [(BOC)2O] (21.793 g, 0.100 mol). The reaction medium was heated at 40-50 C. for 20 min then stirred at room temperature for 1 hour. After evaporation of the solvent, the colorless oil residue was purified by chromatography on silica gel (eluent: dichloromethane/methanol 95:5). The reaction yielded a colorless oil which crystallized slowly. Yield: quantitative Rf (dichloromethane/methanol 95:5): 0.70 IR: nuNH 3368 cm-1; nuCO carbamate 1690 cm-1 MP: 98-100 C. NMR (1H, CDCl3): 1.45 (multiplet, 18H, -CH3- (BOC)); 3.02 (sl, 1H, OH); 3.15-3.29 (multiplet, 4H, BOCNH-CH2-CH-CH2-NHBOC); 3.75 (m, 1H, BOCNH-CH2-CH-CH2-NHBOC); 5.16 (multiplet, 2H, -NHBOC). MS (MALDI-TOF): M+1=291 (M+H+); M+23=313 (M+Na+); M+39=329 (M+K+)

According to the analysis of related databases, 616-29-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Darteil, Raphael; Caumont-Bertrand, Karine; Najib, Jamila; US2006/69156; (2006); A1;,
Alcohol – Wikipedia,
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Synthetic Route 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.

Preparation of the compound of formula (III) starting from the isolated compound (II), in the presence of calcium hydroxide. Calcium hydroxide (12.8 g, 0.173 mol) was slowly added, under stirring and keeping the temperature below 25C, to a solution of compound (II) (120 g, 0.169 mol) in 305 g of DMA.Further on, to the reaction mixture a solution of 2-amino-l,3-propandiol in DMA (133 g, 28% w/w, 0.406 mol) was added dropwise in a period of time of about 45 minutes. The mixture was kept at about 300C for 10 hours, up to the completion of the reaction. The crude reaction material containing the derivative of formula (III) may be purified and hydro lyzed according to the procedure of the Example 3 below. HPLC profile of the mixture after treatment of the sample with NaOH: Iopamidol (IV): 97.9%; F-impurity: 0.2%.

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; BRACCO IMAGING SpA; CERAGIOLI, Silvia; CIARCIELLO, Giovanni; INCANDELA, Salvatore; MINOTTI, Pietro; WO2010/57765; (2010); A1;,
Alcohol – Wikipedia,
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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. 110-73-6, name is 2-(Ethylamino)ethanol, the common compound, a new synthetic route is introduced below. name: 2-(Ethylamino)ethanol

A mixture of 1-(6-hydroxy-2-naphthyl)ethanone (744 mg, 3.92 mmol), sodium hydrogen sulfate(IV) (1.66 g, 16 mmol), 2-ethylaminoethanol (2 mL) and water (5 mL) was heated in a steel bomb at 130-140 C. for 3 days. After cooling, the mixture was distributed between water and ethyl acetate, and the organic layer was washed with brine, dried and evaporated. The residue was dissolved in acetone and loaded onto a 4 mm dry silica plate for radial chromatography. The plate was eluted with a 1:1 mixture of petroleum ether and ethyl acetate. Appropriate fractions were collected and evaporated to give 125 mg (12%)of 1-{6-[ethyl-(2-hydroxylethyl)-amino]-2-naphthyl}ethanone.

The synthetic route of 110-73-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; The Regents of the Univ. of California; US6274119; (2001); B1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Application of 534-03-2 ,Some common heterocyclic compound, 534-03-2, molecular formula is C3H9NO2, 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.

To serinol (10.40g, 114mmol) and sodium carbonate (42.30g, 399mmol) was added water (200mL), was added triphosgene (20.00g, 70mmol). Stirred for 12 hours at room temperature. After completion of the reaction, water (200 mL), dichloromethane (120mL × 3) extracted together The organic phase was washed with saturated brine (150 mL) and washed. Filtered and thesolvent evaporated under reduced pressure and the crude product purified by column chromatography (ethyl acetate / methanol(v / v) = 10/1) to give a colorless oil (5.2g, 39%).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,534-03-2, its application will become more common.

Reference:
Patent; GUANGDONG HEC PHARMACEUTICAL CO., LTD; ZUO, YINGLIN; LAO, JINHUA; ZHENG, JINFU; WEN, LIANG; ZHANG, JIN; WU, SHOUTAO; YUAN, XIAOFENG; WANG, XIAOJUN; ZHANG, YINGJUN; (32 pag.)CN104497008; (2016); B;,
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Reference of 616-29-5, Adding some certain compound to certain chemical reactions, such as: 616-29-5, name is 1,3-Diaminopropan-2-ol,molecular formula is C3H10N2O, 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 616-29-5.

1,3-diaminopropan-2-ol (3 g, 0.033 mol) was dissolved in methanol (300 ml) followed by the addition of triethylamine (33 ml dropwise) and di-tert-butyl dicarbonate [(BOC)2O] (21.793 g, 0.100 mol). The reaction medium was heated at 40-50 C. for 20 min then stirred at room temperature for 1 hour. After evaporation of the solvent, the colorless oil residue was purified by chromatography on silica gel (eluent: dichloromethane/methanol 95:5). The reaction yielded a colorless oil which crystallized slowly. Yield: quantitative Rf (dichloromethane/methanol 95:5): 0.70 IR: nuNH 3368 cm-1; nuCO carbamate 1690 cm-1 MP: 98-100 C. NMR (1H, CDCl3): 1.45 (multiplet, 18H, -CH3- (BOC)); 3.02 (sl, 1H, OH); 3.15-3.29 (multiplet, 4H, BOCNH-CH2-CH-CH2-NHBOC); 3.75 (m, 1H, BOCNH-CH2-CH-CH2-NHBOC); 5.16 (multiplet, 2H, -NHBOC). MS (MALDI-TOF): M+1=291 (M+H+); M+23=313 (M+Na+); M+39=329 (M+K+)

According to the analysis of related databases, 616-29-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Darteil, Raphael; Caumont-Bertrand, Karine; Najib, Jamila; US2006/69156; (2006); A1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Synthetic Route 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.

Preparation of the compound of formula (III) starting from the isolated compound (II), in the presence of calcium hydroxide. Calcium hydroxide (12.8 g, 0.173 mol) was slowly added, under stirring and keeping the temperature below 25C, to a solution of compound (II) (120 g, 0.169 mol) in 305 g of DMA.Further on, to the reaction mixture a solution of 2-amino-l,3-propandiol in DMA (133 g, 28% w/w, 0.406 mol) was added dropwise in a period of time of about 45 minutes. The mixture was kept at about 300C for 10 hours, up to the completion of the reaction. The crude reaction material containing the derivative of formula (III) may be purified and hydro lyzed according to the procedure of the Example 3 below. HPLC profile of the mixture after treatment of the sample with NaOH: Iopamidol (IV): 97.9%; F-impurity: 0.2%.

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; BRACCO IMAGING SpA; CERAGIOLI, Silvia; CIARCIELLO, Giovanni; INCANDELA, Salvatore; MINOTTI, Pietro; WO2010/57765; (2010); A1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

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. 110-73-6, name is 2-(Ethylamino)ethanol, the common compound, a new synthetic route is introduced below. name: 2-(Ethylamino)ethanol

A mixture of 1-(6-hydroxy-2-naphthyl)ethanone (744 mg, 3.92 mmol), sodium hydrogen sulfate(IV) (1.66 g, 16 mmol), 2-ethylaminoethanol (2 mL) and water (5 mL) was heated in a steel bomb at 130-140 C. for 3 days. After cooling, the mixture was distributed between water and ethyl acetate, and the organic layer was washed with brine, dried and evaporated. The residue was dissolved in acetone and loaded onto a 4 mm dry silica plate for radial chromatography. The plate was eluted with a 1:1 mixture of petroleum ether and ethyl acetate. Appropriate fractions were collected and evaporated to give 125 mg (12%)of 1-{6-[ethyl-(2-hydroxylethyl)-amino]-2-naphthyl}ethanone.

The synthetic route of 110-73-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; The Regents of the Univ. of California; US6274119; (2001); B1;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Synthetic Route of 109-83-1, 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. 109-83-1, name is 2-(Methylamino)ethanol, molecular formula is C3H9NO, 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.

4-fluoro benzaldehyde in dry DMSO (35ml) (5.0g, 40.29mmol) and 2- To a stirred solution of (methylamino) ethanol (3.63g, 48.34mmol), under an argon atmosphere K2CO3 ( 6.68g, 48.34mmol) was added. The reaction mixture was then heated for 3 days at 120 . Then added to the reaction mixture which was cooled in water (400ml), and extracted with EtOAc (7 × 100ml). The combined organic layers were washed with brine (2 × 100ml), dried (Na2SO4), the solvent was removed under reduced pressure to give an oil of high viscosity orange. Which solidified slowly at room temperature. This solid was dissolved in DCM (40ml) and then a yellow solid precipitated by adding the solution to hexanes (200 ml), was collected yellow solid by filtration under vacuum. Recrystallization from toluene, the title compound (4.47g, 62%) was obtained as small yellow thin plate material.

According to the analysis of related databases, 109-83-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; WISTA LABORATORIES LIMITED; KEMP, STEVEN JOHN; STOREY, LYNDA JANE; STOREY, JOHN MERVYN DAVID; RICKARD, JANET; HARRINGTON, CHARLES ROBERT; WISCHIK, CLAUDE MICHEL; CLUNAS, SCOTT; HEINRICH, TOBIAS KERST; (269 pag.)JP5667058; (2015); B2;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts