Sources of common compounds: Triphenyl methyl olmesartan

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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

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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

New downstream synthetic route of Triphenyl methyl olmesartan

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To TOLM (75 g) were successively added acetic acid_water=1:1 (330 mL, 4.4 vol) and concentrated sulfuric acid (5.4 mL, 1.08 eq). The obtained mixture was stirred at 25C – 30C for 1 hr. Using TLC (thin layer chromatography) (TLC eluent: 10% methanol/methylene chloride, detection method: UV), complete disappearance of TOLM was confirmed. [0309] The reaction mixture was filtered and insoluble trityl alcohol was removed. The aqueous layer was adjusted to pH 2 – 3 by adding 25% aqueous sodium carbonate solution (initial pH of the reaction mixture was 4 – 4.5). The reaction mixture was stirred for 5 min, methylene chloride (225 mL, 3 vol) was added thereto, and the mixture was stirred for 5 min. Stirring was stopped, and the mixture was stood and partitioned. The aqueous layer was extracted with methylene chloride (2×225 mL, 2×3 vol), the extracts were combined with the organic layer, deionized water (375 mL, 5vol) was added, and the mixture was stirred for 5 min. Stirring was stopped, and the mixture was stood for 5 min and partitioned. To the organic layer was added saturated brine (375 mL, 5 vol), and the mixture was stirred for 5 min, left standing and partitioned. The organic layer was concentrated under reduced pressure at 40C – 45C to give crude OLM MDX (49 g, 93%) as a pale-yellow solid.To the crude OLM MDX (49 g, 1 eq) obtained in the above-mentioned (7) was added acetone (735 mL, 15 vol), and the mixture was stirred at 55C – 60C for 10 min. Furthermore, the reaction mixture was stirred at the same temperature for 15 min, and acetone was evaporated under normal pressure. Heating was stopped when a solid was precipitated, and the mixture was cooled to 25C – 30C. The precipitated solid was collected by filtration and dried with suction for 30 min to give OLM MDX (41 g, 83%). [0311] To the OLM MDX obtained above was added isopropyl alcohol (164 mL, 4 vol), and the mixture was heated to 55C – 60C, and stirred at 55C – 60C for 1 hr. Heating was stopped and the mixture was gradually cooled to 25C – 30C, and stirred at 25C – 30C for 30 min. The precipitated solid was filtered and dried with suction to give OLM MDX (41 g, 100%). [0312] The OLM MDX (41 g) obtained above and acetone (about 1 L) were heated to 55C – 60C, and stirred at 55C – 60C for 25 min. Acetone was evaporated under normal pressure until the mixture became cloudy, and the mixture was gradually cooled to 25C – 30C. The precipitated solid was collected by filtration and dried with suction for 30 min to give OLM MDX (34 g, 83%). The HPLC purity of the obtained OLM MDX was 99.66%. [0313] The OLM MDX (44 g) obtained above was dissolved in acetone (about 1.2 L), and the mixture was stirred at 55C-60C for 10 min. Acetone was evaporated under normal pressure until the solution became cloudy, and the solution was gradually cooled to 25C – 30C. The precipitated solid was collected by filtration, dried with suction for 30 min, blast dried for 1 hr, and further blast dried at 40C – 45C for 5 hr to give OLM MDX (36 g) as a white solid. The HPLC purity of the obtained OLM MDX was 99.8%.

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Reference£º
Patent; API Corporation; SEKI, Masahiko; EP2891650; (2015); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

Downstream synthetic route of 4,5-Dimethyl-1,3-dioxol-2-one

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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

The origin of a common compound about 37830-90-3

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(1) 2.08 g of 4,5-dimethyl-1,3-dioxol-2-one was dissolved in 24 mL of benzene, to which 3.25 g of N-bromosuccinimide and 86 mg of 2,2′-azobis(isobutyronitrile) were added at room temperature, and this mixture was stirred for 30 minutes while heating it under reflux. The reaction mixture was cooled to room temperature, and consequently, a solution of 4-bromomethyl-5-methyl-1,3-dioxol-2-one in benzene was obtained.(2) 3.00 g of methyl 3-(5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-{[3-(methoxymethoxy)-1,2-benzisoxazol-6-yl]methoxy}phenyl) propanoate was dissolved in 15 mL of methanol and 15 mL of tetrahydrofuran, to which a solution of 1.08 g of potassium hydroxide in 4.5 mL of water was added, and this mixture was stirred for one hour at room temperature, and then the solvent was distilled out under reduced pressure. The resultant residue was dissolved in 40 mL of N,N-dimethylformamide, to which 3.60 g of potassium carbonate was added. Then, the benzene solution prepared in (1) was added thereto, and was stirred for one hour at room temperature. The reaction mixture was poured into a mixture of ethyl acetate and water, and adjusted to pH 7 with 6M hydrochloric acid, and then the organic phase was separated therefrom. After the resultant organic phase was washed with water and a saturated sodium chloride solution successively, the washed phase was dried over anhydrous sodium sulfate, and the solvent was distilled out under reduced pressure. The resultant residue was purified by silica gel column chromatography [eluent; toluene:ethyl acetate=5:1] to yield 1.58 g of (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl 3-(5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-{[3-(methoxymethoxy)-1,2-benzisoxazol-6-yl]methoxy}phenyl) propanoate as yellow oil. NMR(400MHz,CDCl3) delta value: 1.5-2.0(8H,m), 2.16(3H,s), 2.75(2H,t,J=7.6Hz), 3.10(2H,t,J=7.6Hz), 3.65(3H,s), 4.5-5.0(3H,m), 5.33(2H,s), 5.57(2H,s), 6.37(1H,dd,J=8.8,2.4Hz), 6.47(1H,d,J=2.4Hz), 6.95(1H,d,J=8.4Hz), 7.35(1H,dd,J=8.4,1.2Hz), 7.4-7.6(4H,m), 7.72(1H,d,J=8.0Hz), 12.67(1H,s).

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Reference£º
Patent; TOYAMA CHEMICAL CO., LTD.; Hirono, Shuichi; Shiozawa, Shunichi; EP1445249; (2004); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

Sources of common compounds: 37830-90-3

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37830-90-3,In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a article,4,5-Dimethyl-1,3-dioxol-2-one,introducing its new discovery.

PREPARATION 18 4-Carbo-(5-methyl-2-oxo-1,3-dioxol-4-ylmethoxy)methylpiperazine hydrochloric acid salt Combine 4,5-dimethyl-1,3-dioxol-2-one (3.42 g, 30 mmol), N-bromosuccinimide (5.34 g, 30 mmol) and AIBN (500 mg, 3 mmol) in anhydrous carbon tetrachloride (100 mL). Heat at reflux. After 2 hours, cool and filter. Concentrate the filtrate to give 4-bromomethyl-5-methyl-1,3-dioxol-2-one (6.5 g, crude) as an oil, which can be used for the next step without further purification.

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Reference£º
Patent; Hoechst Marion Roussel, Inc.; US5977139; (1999); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

Downstream synthetic route of Triphenyl methyl olmesartan

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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

Discovery of Triphenyl methyl olmesartan

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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 144690-92-6. In a patent£¬Which mentioned a new discovery about 144690-92-6, molcular formula is 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

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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

Discovery of Triphenyl methyl olmesartan

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 144690-92-6 is helpful to your research. 144690-92-6

144690-92-6,In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a article,Triphenyl methyl olmesartan,introducing its new discovery.

Example 1323.88 g of (V) were suspended in 92 ml of acetonitrile. The mixture was cooled to 5C in order to add 24.6 ml of 6N HCI. The mixture was stirred for 2 hours at 5C. 150 ml of toluene were added. The pH was adjusted to 5.7 with potassium bicarbonate. The mixture was filtered in order to eliminate part of the salts generated. The solid was washed with 30 ml of acetonitrile. The phases were separated. The acetonitrile present in the organic phase was distilled. The mixture was cooled and filtered. The solid was washed with toluene and water. (VI) was dried in a heat cabinet. 16.66 g of (VI) were obtained (85% yield).

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 144690-92-6 is helpful to your research. 144690-92-6

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

New downstream synthetic route of 144690-92-6

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A solution of MTT in 10 volumes of acetic acid (75%) was heated for 1.5 hrs at 60 C. until a pH of 2.21-2.23 was achieved, 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.)., 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

Sources of common compounds: 80841-78-7

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Example 3; Trityl olmesartan medoxomil (III); A solution of potassium salt 4 in methyl ethyl ketone from the preceding experiment (ca. 20 g of the salt) was diluted with methyl ethyl ketone (290 ml), and, after adding potassium iodide (2 g) and 4-chloromethyl-5-methyl-l,3-dioxol-2-one (7 g), the mixture was stirred at 50 0C for 7.5 h. After the reaction was completed, the mixture was filtered, and the filtrate was washed with methyl ethyl ketone (3 x 50 ml). After concentrating to ca. 160 ml in vacuo, ethanol (250 ml) was added, and the reaction mixture was again concentrated to ca. 300 ml in vacuo.The concentrated product in ethanol was inoculated and stirred at 50 0C for 0.5 h, and after getting thicker, diluted with ethanol (50 ml) and cooled to 20 C. The precipitated product was sucked off, washed with ethanol (2 x 20 ml) and dried in a vacuum drier at 50 C. 14.4 g (86 %) of the product was obtained.

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