Tag: M.W:800-900

144690-92-6, A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.144690-92-6. An updated downstream synthesis route of 144690-92-6 as follows.

78(b) (5-Methyl-2-oxo-1,3-dioxolen-4-yl)methyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-{4-[2-(tetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate 75 ml of water were added to a suspension of 29.3 g of (5-methyl-2-oxo-1,3-dioxolen-4-yl)methyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-{4-[2-(trityltetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate [prepared as described in step (a) above] in 225 ml of acetic acid, and the resulting mixture was stirred at 60 C. for 1.5 hours. At the end of this time, 75 ml of water were added to the mixture, which was then cooled. Precipitated trityl alcohol was removed by filtration, and the filtrate was concentrated by evaporation under reduced pressure. Toluene was added to the residue, and the mixture was again concentrated by evaporation under reduced pressure, to remove the remaining water and acetic acid. The residue was crystallized in ethyl acetate, to give 16.6 g of the title compound as crystals, melting at 177-180 C. (with decomposition). The Nuclear Magnetic Resonance Spectrum of this compound was identical with that of the compound obtained as described in Example 61(b).

A chemical reaction often occurs in steps, although it may not always be obvious to an observer.

Reference£º
Patent; Sankyo Company, Limited; US5616599; (1997); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.Triphenyl methyl olmesartan, cas is 144690-92-6. Here is a downstream synthesis route of the compound 144690-92-6, 144690-92-6

A mixture of trityl olmesartan medoxomil in acetic acid and water (1:1, 400 mL) and sulfuric acid (12.2 gm) (1 mol equivalent) was stirred at 25C-30C for 45-60 minutes. Triphenylcarbinol was filtered and the filtrate was washed with acetic acid and water mixture (1:1, 50 rnL). Sodium carbonate solution (25% w/v, 100 mL) was charged to the filtrate and the product was extracted with dichloromethane (500 mL) followed by recovery of the solvent. The product was isolated, recrystallized using acetonitrile (300 mL), filtered, washed and dried under reduced pressure to obtain crude olmesartan medoxomil.Yield: 90% HPLC purity: 99.29 % OLM-acid: Not Detectable OLM- Eliminate: 0.07% Acetic acid content: Not Detectable

A chemical reaction often occurs in steps, although it may not always be obvious to an observer.

Reference£º
Patent; RANBAXY LABORATORIES LIMITED; KAPOOR, Ashwini, Kumar; MEHTA, Hiten, Sharadchandra; NATH, Asok; PRASAD, Mohan; WO2010/134052; (2010); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

144690-92-6, A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.144690-92-6. An updated downstream synthesis route of 144690-92-6 as follows.

Example 8; To a solution of (5-Methyl-2-oxo-1,3-dioxolen-4-yl)methyl-4-(1-hydroxy-1-methyl ethyl)-2-propyl-1-{4-[2-(trityltetrazol-5-yl)phenyl]phenyl}methylimidazole-5-carboxylate (5.0 g; 6.25 mmol) and toluene (20 ml) at 15-20 C. is added hydrochloric acid (30 ml). Reaction mass is stirred at 15-20 C. for about 15 minutes to 4 hours. The reaction is monitored by TLC. After completion of reaction layers are separated. Aqueous layer is washed with toluene (10 ml). Adjusted the pH of the aqueous layer to 5-6 using aqueous potassium carbonate solution (200 ml) and the compound is extracted using ethyl acetate (60 ml). Combined ethyl acetate layers are washed with brine. Finally crude product (3.1 g; 89.8%) is isolated by evaporation of solvent under reduced pressure.Purity: 99.5%

With the complex challenges of chemical substances, we look forward to future research findings about Triphenyl methyl olmesartan,belong Dioxole compound

Reference£º
Patent; Ramanjaneyulu, Gorantla Seeta; Mohan, Bandari; Ray, Purna Chandra; Sethi, Madhuresh Kumar; Rawat, Vijendra Singh; Krishna, Yerramalla Raja; Lakshminarayana, Vemula; Srinivas, Mamidi; US2009/281327; (2009); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

144690-92-6, The molecularity is the number of molecules that collide during that step in the mechanism. If only a single reactant molecule in an elementary reaction, that step is designated as unimolecular; if there are two reactant molecules, it is bimolecular.144690-92-6. A new synthetic method of this compound is introduced below.

Trityl olmesartan medoxomil (8 g, 10 mmol) is dissolved in THF (50 ml) and 48 % aqueous hydrobromic acid (3.5 ml, 30 mmol) is added. The mixture is stirred for 1 hour at room temperature and then 1 hour at 0 C. The precipitate is filtered, washed with cold THF (20 ml) and dried overnight in vacuum at room temperature to give 5.7 g of olmesartan medoxomil hydrobromide Form B (98.6 % area)

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps.

Reference£º
Patent; LEK Pharmaceuticals d.d.; EP2022790; (2009); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.Triphenyl methyl olmesartan, cas is 144690-92-6. Here is a downstream synthesis route of the compound 144690-92-6, 144690-92-6

Into a 1000 mL four-necked flask equipped with a two-piece stirring blade having a diameter of 10 cm,50 g of trityl olmesartan medoxomil, 225 ml of acetic acid and 75 ml of water were added and stirred at 40 C. for 2 hours to carry out deprotection reaction.Subsequently, the reaction solution was cooled to 20 C. and stirred at 20 C. for 1 hour, and the precipitated triphenylmethanol was removed by vacuum filtration,To the obtained filtrate were added 250 ml of 10% sodium hydrogen carbonate and 500 ml of ethyl acetate, followed by vigorous stirring, and the aqueous layer was separated to obtain an organic layer containing olmesartan medoxomil.200 ml of ethyl acetate was distilled off from the organic layer, and the mixture was stirred at 20 to 30 C. for 1 hour. The precipitated solid was collected by filtration under reduced pressure as a wet body.The obtained wet body was dried at 40 C. for 14 hours to obtain 30 g of crystals of olmesartan medexomil (purity: 99.54%)., 144690-92-6

There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps.

Reference£º
Patent; TOKUYAMA CORPORATION; MORI, HIROYUKI; TANAKA, KENJI; (11 pag.)JP2015/74608; (2015); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

144690-92-6, The molecularity is the number of molecules that collide during that step in the mechanism. If only a single reactant molecule in an elementary reaction, that step is designated as unimolecular; if there are two reactant molecules, it is bimolecular.144690-92-6. A new synthetic method of this compound is introduced below.

Take 40g of compound 5, Add 80mL of methanol, 330 mL of ethyl acetate, Warmed to 45 , After 8 hours of reaction, Add 860mL water, Insoluble matter was removed by filtration, The filtrate was concentrated, In oily liquid, Acetonitrile, Stirred under a solid precipitation, filter, Washed with ethanol, 23.2 g of white solid was obtained, The yield was 83.1% The HPLC purity was 99.2%.

This molecular description is the mechanism of the reaction; it describes how individual atoms, ions, or molecules interact to form particular products. The stepwise changes are collectively called the reaction mechanism.

Reference£º
Patent; Disha Pharmaceutical Group Co., Ltd.; Zhang Zhaoxing; Zhang Hongqiang; Qin Litai; Li Wei; Li Zongwen; Xia Haijian; (6 pag.)CN103012382; (2016); B;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.144690-92-6, molecula formula is Triphenyl methyl olmesartan, below Introduce a new synthetic route., 144690-92-6

10L reaction flask was charged 500.0g (0.62mol) compound 6,3L water, 1L of acetone, was added dropwise a solution of 645.0g of 22.5% sulfuric acid at 20 . Dropping was completed, the reaction at room temperature after 4.5h TLC or HPLC in control, raw reaction was complete. Body cooling system to 0-5 , when the temperature stabilized filtrate back into the reaction vessel was charged with acetone 1L and 2L water. The system was maintained at 15 solution of 210g of potassium carbonate and 400g water to form a solution, drops of completion, stirring after 1-2h incubation filtration. The filter cake was dried to obtain olmesartan medoxomil pure 328.9g. HPLC: 99.96%, yield: 94.3%, 144690-92-6

A chemical reaction often occurs in steps, although it may not always be obvious to an observer.

Reference£º
Patent; Jiangsu Bang Pharmaceutical Co., Ltd.; Zhao, Guangrong; Huan, Shuang; Zhao, Huayang; Liu, Liping; Chen, Guoping; Tang, Jingyu; (19 pag.)CN105481842; (2016); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

We know that the rate of many reactions can be accelerated by catalysts. A catalyst speeds up the rate of a reaction by lowering the activation energy; in addition, the catalyst is regenerated in the process. 144690-92-6, molecula formula is C48H44N6O6, below Introduce a new synthetic route., 144690-92-6

A mixture of trityl olmesartan medoxomil (4.0 g), methanol (20 mL), and water (10 mL) is stirred at 25-35C for 15 minutes. Aqueous HCI (1 mL) is added drop-wise at 25-35C. The mixture is cooled to 0-50C. Water (30 mL) is added and the mixture is further stirred at 0-5C for 1 hour. The insoluble material is removed by filtration and the pH of the filtrate is adjusted to about 3-4 by adding 10% aqueous NaHCOs at 25-35C. The mixture is extracted with dichloromethane (3chi40 ml_). The organic layers are combined and washed with water (40 ml_). The solvent is distilled under reduced pressure below 400C. Ethyl acetate (10 ml_) is added to the residue and the mixture is heated to 50-600C and stirred for 1 hour. The mixture is cooled to 25-35C. The formed solid is filtered, washed with ethyl acetate (5 ml_), and dried under vacuum at 60-700C (yield 2.0 g).

With the complex challenges of chemical substances, we look forward to future research findings about Triphenyl methyl olmesartan

Reference£º
Patent; DR. REDDY’S LABORATORIES LTD.; DR. REDDY’S LABORATORIES, INC.; KOLLA, Naveen Kumar; MANNE, Nagaraju; NAREDLA, Anitha; SHINDE, Sachin Gulabrao; WO2011/14611; (2011); A2;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.Triphenyl methyl olmesartan, cas is 144690-92-6. Here is a downstream synthesis route of the compound 144690-92-6, 144690-92-6

Example 7; Preparation of olmesartan medoxomilTo 75 % aqueous acetic acid (1000 ml) was slowly added trityl olmesartan medoxomil (110 gms)[prepared as described in example 5] at 25-30C. The contents were stirred at 600C for 1 hour. The reaction mass was chilled to 0-5C and filtered to remove tritanol. The reaction mass was concentrated under reduced pressure. The residue was quenched with water (500 ml), neutralized with a base and extracted in dichloromethane (500 ml). The clear dichloromethane extract was then concentrated under reduced pressure and 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%

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand Triphenyl methyl olmesartan reaction routes.

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

144690-92-6, A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.144690-92-6. An updated downstream synthesis route of 144690-92-6 as follows.

Example 7:Preparation of olmesartan medoxomil Trityl olmesartan medoxomil (260 gm) as obtained in example 1 was dissolved in toluene (2600 ml) and then added concentrated hydrochloric acid (156 ml) for 1 hour 30 minutes at room temperature. The reaction mass was maintained for 1 hour 30 minutes at room temperature and then added water (1000 ml). The reaction mass was stirred for 45 minutes at room temperature and the layers were separated. To the aqueous layer was added ethyl acetate (5000 ml) at room temperature. The reaction mass was cooled to 15 to 20C and pH of the reaction mass was adjusted to 4.5 to 5.5 with sodium carbonate (20%, 560 ml). The reaction mass was stirred for 20 minutes at 20C and the layers were separated. The organic layer was dried over sodium sulfate and ethyl acetate was distilled off completely under vacuum at below 45C to obtain a residual mass. To the residual mass was added ethyl acetate (400 ml) at 40C and then heated to 75 to 80C. The contents were maintained for 30 minutes at 75 to 80C. The reaction mass was cooled to room temperature and stirred for 1 hour. The reaction mass was further cooled to 10 to 15C and stirred for 1 hour 30 minutes, filtered. The solid obtained was dried at 40 to 45C for 4 hours to obtain 150 gm of olmesartan medoxomil.Olmesartan medoxomil: 98.6%;Olmesartan acid impurity: 0.32%;Trityl olmesartan medoxomil impurity: 0.35%Methyl olmesartan medoxomil impurity: 0.35%.

With the synthetic route has been constantly updated, we look forward to future research findings about Triphenyl methyl olmesartan,belong Dioxole compound

Reference£º
Patent; HETERO RESEARCH FOUNDATION; PARTHASARADHI REDDY, Bandi; RATHNAKAR REDDY, Kura; MURALIDHARA REDDY, Dasari; RAJI REDDY, Rapolu; RAMAKRISHNA REDDY, Matta; VAMSI KRISHNA, Bandi; WO2012/1694; (2012); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem