Day: February 7, 2021

144690-92-6,Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. C48H44N6O6,introducing its new discovery.

Example 7; Olmesartan medoxomil (V); Water (20 g) was added to a solution of the starting substance (III; 20 g) in acetonitrile (100 ml), and the mixture was heated to a mild boil for 14 h. After cooling, the formed trityl alcohol was sucked off, and the mixture was concentrated. After crystallization from isopropyl acetate, 10 g (71 %) of the product with an HPLC purity of 97 % was obtained. The HPLC purity of the product recrystallized from isopropanol was 99.5 %.

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Reference£º
Patent; ZENTIVA, A.S.; WO2007/48361; (2007); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7,is a common compound. C5H5ClO3In an article, once mentioned the new application about 80841-78-7.

Example 3; Preparation of olmesartan medoxomilTo dimethyl acetamide (800 ml) was added 4-(1-hydroxy-1-methylethyl)-2-propyl imidazol- 5-carboxylic acid ethyl ester (100 gms) and powdered potassium carbonate (200 gms). To this was charged 4-[2-(trityltetrazol-5-yl)phenyl]benzyl bromide (300 gms) at 45-50C. The contents were stirred for 8-10 hours at 45-50C. The insolubles were filtered. The contents were cooled to 5-100C. Potassium tertiary butoxide (100 gms) was charged at a temperature below 45C. The reaction was maintained at 40-450C for 3 hrs. To this was slowly added 5-methyl-2-oxo-1 ,3-dioxane-4-yl) methyl chloride at 40-450C over a period of 1 hour. The contents were heated to 60-650C and maintained for 4 hours. The reaction mass was then cooled to 30-350C and was neutralized with concentrated hydrochloride acid. The reaction mass was filtered to remove inorganics. The reaction mass was charcoalized using charcoal (10 gms) and was stirred for 30 minutes at 40-450C. The reaction mass was filtered over hyflo. The clear filtrate was acidified with hydrochloric acid (100 ml) slowly at 25-30C. The contents were stirred at 60C for 1 hour. The reaction mass was chilled to 0-5C and was filtered to remove tritanol. The reaction mass was concentrated under reduced pressure. The residue was quenched with water (500 ml), neutralized with base and extracted in dichloromethane (500 ml).The clear dichloromethane extract was then concentrated under reduced pressure, stripped off with acetone. The residue thus obtained was isolated from the acetone (250 ml) to give 55 gms of the title compound. Chromatogrphic purity- > 99%

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Reference£º
Patent; CIPLA LIMITED; CURTIS, Philip, Anthony; WO2008/43996; (2008); A2;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

In an article, published in an article,once mentioned the application of 37830-90-3,molecular formula is , is a conventional compound. this article was the specific content is as follows. 37830-90-3

(1) Synthesis of 4-bromomethyl-5-methyl-1,3-dioxolen-2-one[the compound of formula (III) in which X is a bromine atom]: 3.42 g of 4,5-dimethyl-1,3-dioxolen-2-one (synthesised in accordance with Tetrahedron Letters, (1972), pages 1701-1704) was dissolved in 150 ml of carbon tetrachloride, and 5.34 g of N-bromosuccinimide and a catalytic amount of alpha,alpha’-azobisisobutyronitrile were added. The mixture was heated under reflux for 15 minutes. The reaction mixture was concentrated to half of its volume and the resulting insoluble matter was removed by filtration. Concentrating the filtrate gave a syrupy residue. The residue was distilled under reduced pressure to give a fraction boiling at 115¡ã to 120¡ã C./5 mm Hg which was 4.2 g (yield 73percent) of the captioned compound., 37830-90-3

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 37830-90-3 is helpful to your research. 37830-90-3

Reference£º
Patent; Kanebo Ltd.; US4455310; (1984); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. 80841-78-7, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 80841-78-7, name is C5H5ClO3. In an article£¬Which mentioned a new discovery about 80841-78-7

Example 236.0 g (50.3 mmol) ethyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-{4-[2-(trityltetrazol-5-yl)-phenyl]phenyl}-methyl imidazole-5-carboxylate (Va) and 3.0 g (75.4 mmol) of NaOH were suspended in 413 ml dimethylacetamide. The suspension was then stirred at room temperature for 20 h and after that 6.9 g (50.3 mmol) of K2CO3, were added. The mixture was cooled to 0 C. and solution of 15.4 g (70.4 mmol) 4-chloromethyl-5-methyl-2-oxo-1,3-dioxolene in 39 ml of dimethylacetamide were slowly added. The mixture was slowly heated to 50 C. and stirred at this temperature for 2 h. After esterification was completed, the mixture was cooled to 10 C. and poured into a mixture of 625 ml of ethyl acetate and 625 ml of 10% NaCl, and stirred at 25 C. for 15 min. The phases were separated and organic phase was washed 2¡Á with 500 ml of 10% NaCl, dried over Na2SO4 and filtered. The filtrate was concentrated up to ? (approximately 270 g) at reduced pressure.To the resulting solution, 80 ml of ethanol and 8.3 ml (100 mmol) of conc. HCl were added and stirred at 24-26 C. for 3 h. To the cooled mixture 600 ml of water was added and pH of the suspension was estimated to 5 by addition of 5 M NaOH. The phases were stirred for 15 min and separated. Water phase was reextracted with 150 ml of ethyl acetate. Collected organic phases were dried over Na2SO4, filtered and concentrated under reduced pressure. 560 ml of ethyl acetate were added and the mixture was evaporated again. After that, 300 ml of ethyl acetate were added and the mixture was cooled to 20 C. and stirred for 1 h, filtered off and washed with 20 ml of fresh ethyl acetate. The yield of the product (I) was 21 g (75%).

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Reference£º
Patent; KRKA; US2009/131680; (2009); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7,Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one,introducing its new discovery.

(3) the C43 H39 N6 NaO3 AMST – 4 and DMF added in a reaction kettle, lowering the temperature to 0 C, adding potassium carbonate, maintain 0 C dropwise C5 H5 ClO3 AMST – 5 dissolved in DMF solution, after the completion of the dropping 85 C reaction 4 hours, monitoring the reaction is finished adding water, sodium chloride and ethyl acetate stirring extraction, liquid, separating the upper organic phase, a mixed solution of water and sodium chloride washing, separating the organic phase at upper layer for sodium sulfate drying, filtering, 60 C concentrated to the reagent, in acetonitrile for 30 C beating 1 hour, cooling to 25 C, filtering, cake isopropyl alcohol leaching, 75 C drying to constant weight to obtain the product C48 H44 N6 O6 AMST – 6; the C43 H39 N6 NaO3 AMST – 4, DMF, potassium carbonate, C5 H5 ClO3 AMST – 5, ethyl acetate, acetonitrile, water, sodium chloride and sodium sulfate the mass ratio of the 192:560: 62:1500: 1000:1500: 300:50;

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Reference£º
Patent; Jiangxi Yong Tong Technology Co., Ltd.; Liu Zhongchun; (10 pag.)CN107311989; (2017); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

37830-90-3,Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.4,5-Dimethyl-1,3-dioxol-2-one,introducing its new discovery.

(1) Synthesis of 4-bromomethyl-5-methyl-1,3-dioxolen-2-one[the compound of formula (III) in which X is a bromine atom]: 3.42 g of 4,5-dimethyl-1,3-dioxolen-2-one (synthesised in accordance with Tetrahedron Letters, (1972), pages 1701-1704) was dissolved in 150 ml of carbon tetrachloride, and 5.34 g of N-bromosuccinimide and a catalytic amount of alpha,alpha’-azobisisobutyronitrile were added. The mixture was heated under reflux for 15 minutes. The reaction mixture was concentrated to half of its volume and the resulting insoluble matter was removed by filtration. Concentrating the filtrate gave a syrupy residue. The residue was distilled under reduced pressure to give a fraction boiling at 115¡ã to 120¡ã C./5 mm Hg which was 4.2 g (yield 73percent) of the captioned compound., 37830-90-3

Interested yet? Keep reading other articles of 37830-90-3!, 37830-90-3

Reference£º
Patent; Kanebo Ltd.; US4455310; (1984); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7,Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one,introducing its new discovery.

Example 96.20 g of (III) were suspended in a mixture of 15.5 ml of tetrahydrofuran:dimethyl sulfoxide (2:3, v/v). The mixture was cooled to 17C in order to add 0.45 g (1.3 equivalents) of sodium hydroxide. The mixture was then heated to 60C. After two hours 1 .55 g (1 .1 equivalents) of potassium carbonate were added to the mixture. The mixture was heated to 70C and 1 .41 g of (IV) dissolved in 16.2 ml of tetrahydrofuran were added to the mixture over 1 .5 hours. The reaction was completed in one hour. The mixture was cooled to room temperature. The mixture was then washed three times with a 29% solution of sodium chloride in water. Finally, the organic solvent was distilled and 18.6 ml of ethyl acetate were added. Finally (V) was crystallised from ethyl acetate by cooling. The mixture was cooled to 0-5C, it was filtered, washed with ethyl acetate and heptane and the resulting solid was dried in a heat cabinet. 5.54 g of (V) were obtained (80% yield). The resulting solid was analysed by HPLC, showing a purity of more than 97%.

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Reference£º
Patent; INTERQUIM, S.A.; JOVE MARTI, Iban; MARQUILLAS OLONDRIZ, Francisco; WO2012/55994; (2012); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. 144690-92-6, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 144690-92-6, name is C48H44N6O6. In an article£¬Which mentioned a new discovery about 144690-92-6

Example 8; Olmesartan medoxomil (V); Water (10 g) was added to a solution of the starting substance (III; 20 g) in acetone (50 ml), and the mixture was heated to a mild boil for 14 h. After the reaction was completed, the mixture was cooled to 0 0C, and the formed trityl alcohol was sucked off. After concentration, a crude product was obtained, which was extracted with ethyl acetate (70 ml). After evaporating the extract and crystallizing from acetone, 10.6 g (76 %) of the product with an HPLC purity of 97.0 % was obtained. Recrystallization from ethyl methyl ketone gave 10.2 g (73 %) of the product with an HPLC purity of 99.3 %; m.p. 175-177 C.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.144690-92-6, you can also check out more blogs about144690-92-6

Reference£º
Patent; ZENTIVA, A.S.; WO2007/48361; (2007); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

144690-92-6,Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. C48H44N6O6,introducing its new discovery.

A solution of MTT in an organic solvent and water (20%) was heated for 4-8 hrs at reflux. When the solvents were either acetonitrile (ACN), isopropyl alcohol (IPA) or t-butanol (t-BuOH), 1 volume of water was added, and the reaction was stirred until the amount of MTT was less than 2%. The mixture was evaporated to dryness. Ethyl acetate (EtOAc, 1 volume) was added to the residue and then evaporated again (twice). The resulting solid was dissolved in EtOAc (12 vol) and heated to reflux. The solution was cooled (2 C.) and stirred for 2 hrs. The product was filtered, washed (EtOAc, 1 vol), and dried on vacuum (45 C.). Table 1 shows the process details with different organic solvents: TABLE 1 Total solvent Time Solvent(s) Volume Temperature ( C.) (hrs) pH ACN:H2O 5:1 + 1 85 7 4.89-4.3 IPA:H2O 5:1 + 1 85 7 4.62-4.25t-BuOH:H2O 5:1 + 1 85 7 4.78-4.28n-propanol:H2O 5:1 reflux 2.5 4.3n-BuOH:H2O 5:1 110 2.5 4.412-BuOH:H2O 5:1 100 3 4.5iso-penthanol:H2O 5:1 100 3 5DMA:H2O 5:1 100 4 4.5DMF:H2O 5:1 100 4 4.5, 144690-92-6

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Reference£º
Patent; Hedvati, Lilach; Pilarsky, Gideon; Shenkar-Garcia, Natalia; US2006/148870; (2006); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

37830-90-3,Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like C5H6O3,introducing its new discovery.

4725 g of dichloroethane was added to the DMDO that was stirred up.1012.5g N-chlorosuccinimideAnd 45g benzoyl peroxide,Reaction temperature 90¡ãC, reaction time 5.5h,The crude product obtained DMDO-Cl 382.5g, a yield of 85.00percent; Step 3: Distillation: The DMDO-Cl crude product at -0.1MPa vacuum,Distilled at 110¡ãC to produce 326g of DMDO-ClThe purity by gas chromatography was 99.06percent.

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Reference£º
Patent; Puyang Tianyuan Biological Technology Co., Ltd.; Zhao Junxia; Wen Jiaogang; Wang Lixia; Lv Xiaoyong; Fu Jingchao; Liu Renhuan; Chen Yongzhuang; Wang Lina; (6 pag.)CN107892681; (2018); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem