Dioxole related

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

1L glass reaction flask was added with 500ml of 75% acetic acid, 100.0g of intermediate 2 was added with stirring, and the mixture was heated to stirAfter 45-55 C, after 2 hours of incubation, reduce the temperature to 20-30 C, add 125ml of water, stir for 30 minutes, filter, filter cake with 100ml of 75% acetic acid, transfer the filtrate to 3L glass reaction bottle, The filtrate was successively added with 1000 ml of dichloromethane and 1000 ml of water, and the mixture was stirred and the organic layer was temporarily stored. The aqueous layer was extracted with 500 ml of dichloromethane, and the organic layer was combined. The organic layer was washed with 1000 ml of water, and the organic layer was washed with 5% carbonic acid. The aqueous sodium hydrogen solution was adjusted to rhoEta=6.0~7.0 (about 600 ml), and the organic layer was washed with 500 ml of water, and the organic layer was separated. The organic layer was concentrated under reduced pressure at 30-40 C until no significant solvent was discharged, and 300 ml was added. Ethyl acetate was stirred and crystallized at 20-30 C for 1 hour, filtered, and the filter cake was rinsed with 300 ml of ethyl acetate. The filter cake was blast dried at 40-50 C for 8 hours to obtain a white solid 60.0 g. (product), yield 86.0%, HPLC: 99.0%.

Elementary reactions that involve the simultaneous collision of more than three molecules are highly improbable and have never been observed experimentally.

Reference£º
Patent; Jiashi (Hunan) Pharmaceutical Technology Co., Ltd.; Dai Yongzhi; Liu Hu; Zhu Laifa; Cai Jian; (8 pag.)CN108341804; (2018); A;,
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

To 3L reaction flask 165.3g above prepared 1 – [[[2- (triphenylmethyl) -2H- tetrazole-5-yl] biphenyl-4-yl] methyl] -2- propyl-4- (1-hydroxy-1-methylethyl) imidazole-5-carboxylic acid (5-methyl-2-oxo-1,3-dioxolen-4-yl) methyl ester ( compound ) and 1.90L70% acetic acid, mechanical stirring, heated to 50 , the reaction 2.5h, an ice bath was added 1.1L of water was stirred.Filtration, the filtrate with 300ml * 3 times extracted with methylene chloride, the methylene chloride phase 150mL ¡Á 5 times with 5% acetic acid solution was washed with acetic acid solution and extracted with 250ml of dichloromethane, and the combined organic phases.The solvent was distilled off under reduced pressure, the residue was added 380mL of ethyl acetate was heated with stirring and cooling to precipitate a solid.Suction filtered, the filter cake was dried in vacuo to give a white solid product to 89.6 g, weight yield was 77.8%.To a 1L reaction flask above 85g crude product olmesartan medoxomil, 420ml of tetrahydrofuran was heated at reflux, was added 360ml of ethyl acetate, the ice bath was stirred for crystallization.Filtration cake blast drying to constant weight to give the product as a white solid 74.8g, a yield of 83.5% by weight., 144690-92-6

Elementary reactions that involve the simultaneous collision of more than three molecules are highly improbable and have never been observed experimentally.

Reference£º
Patent; Bengbu Tu Shan Fengyuan Pharmaceutical Co., Ltd.; Ma, Qisheng; Li, Baoqin; Sun, Peng; (18 pag.)CN105418593; (2016); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7, 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.80841-78-7. An updated downstream synthesis route of 80841-78-7 as follows.

Example 5: The reaction part was charged with ethyl 4- (1-hydroxy-1-methylethyl) -2-propyl-1- {4- [2- (trityltetrazol-5-yl) phenyl] 22 g of 5-carboxylate (Formula 4), 3.1 g of sodium hydroxide and 90 mL of ethanol were added and the mixture was stirred at 20 to 25 C for 4 to 5 hours. When the reaction was completed, the reaction solution was concentrated. To the residue were added 50 mL of ethyl acetate and 50 mL of purified water. The mixture was stirred for 1 hour and then layered. The separated organic layer was washed twice with an aqueous solution containing 30 g of salt and 170 mL of purified water. 1 g of activated carbon and 20 g of anhydrous sodium sulfate were added to the organic layer, followed by stirring for 30 minutes to 1 hour, followed by filtration Respectively. After the filtrate was concentrated under reduced pressure, 50 mL of N, N-dimethylacetamide was added to the residue, the temperature was adjusted to 5 to 10 DEG C 4 g of potassium carbonate was added and 6.2 g of 4- (chloromethyl) -5-methyl-1,3-dioxol-2-one (Formula 6) was dissolved in N, N-dimethylacetamide 6 ML was added dropwise, and the mixture was reacted at 45 to 50 C for 4 hours with stirring. When the reaction is completed, the reaction solution is cooled to 20 to 25 After cooling, 220 mL of ethyl acetate, 30 g of salt and 170 mL of purified water were added successively. The organic layer was separated And then washed once more with an aqueous solution containing 30 g of salt and 170 mL of purified water. The organic layer was washed with 1 g of activated carbon, 20 g of sodium was added and stirred for 30 minutes to 1 hour, followed by filtration. The filtrate was concentrated under reduced pressure, and then acetone 100 mL of i-tril was added, and the mixture was stirred at 50 to 55 C for 1 hour. The crystals were cooled to 0 to 5 [deg.] C and stirred for 2 hours. Followed by washing with 50 mL of isopropyl alcohol, followed by drying to obtain 21.6 g (yield: 88%) of tritylolemecanemethoxysilane (formula 1a) Purity 99.97%) was obtained

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

Reference£º
Patent; DONGBANG FTL CO., LTD; Song, Tae Hong; Jung, Hun Suk; Jang, Do Yeon; Moon, Chung Sun; Jung, Hee Jung; (18 pag.)KR101526249; (2015); B1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7, 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.80841-78-7. A new synthetic method of this compound is introduced below.

Example 2; 36.0 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 0C 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 50C 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 2x 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 24-26C for 3h. 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 1h, filtered off and washed with 20 ml of fresh ethyl acetate. The yield of the product (I) was 21 g (75 %).

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 4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one reaction routes.

Reference£º
Patent; KRKA, tovarna zdravil, d.d., Novo mesto; EP1816131; (2007); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

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.37830-90-3. An updated downstream synthesis route of 37830-90-3 as follows., 37830-90-3

To a solution of 16 grams 4,5-dimethyl-1, 3-dioxol-2-one in CC14 (250 mE) was added N135 (23.4 g,131.5 mmol) and AII3N (1.3 g, 7.88 mmol), then the reaction mixture was heated to 80¡ã C. and stirred for 2 hrs. Monitored the starting material gone by TLC. The mixture was filtered and the filtrate was washed with water and brine, the organic phase was dried over Na2504 and concentrated to give crude product as a yellow oil which was used directly next step (25.3 g, yield 93percent).

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 4,5-Dimethyl-1,3-dioxol-2-one reaction routes.

Reference£º
Patent; KULING THERAPEUTICS; DING, Qiang; Wang, Xiaohu; (55 pag.)US2017/298090; (2017); A1;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7, 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.80841-78-7. An updated downstream synthesis route of 80841-78-7 as follows.

Example 1(1) Tritylation and DMDO Esterification ReactionsAfter mixing 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[[2′-[1H-tetrazol-5-yl]biphenyl-4-yl]methyl]imidazole-5-carboxylic acid (30 g), acetone (210 mL), 1,8-diazabicyclo[5,4,0]-7-undecene [DBU] (25.5 g) and triphenylmethyl chloride [TPC] (23.79 g), water (0.6 mL) was added and acetone (30 mL) was poured into the mixture, and the reaction mixture was stirred at 48 to 52 C. for 2 hours. Then, water (0.9 mL) was added and 4-chloromethyl-5-methyl-1,3-dioxol-2-one [DMDO-Cl] (18.5 g) was poured in, and the reaction mixture was stirred at 48 to 52 C. for 5 hours.(2) Obtaining Crude Crystals of Trityl Olmesartan Medoxomil (Acetone Solvate Crystals)After the reaction mixture was cooled to 20 C. to precipitate crystals, it was stirred at 15 to 25 C. for 40 minutes, and water (96 mL) was added dropwise over a period of 25 minutes, and then the reaction mixture was cooled to 0 to 5 C. and stirred for 30 minutes. The precipitated crystals were filtered out and washed with acetone-water (150 mL), and wet crude crystals of (5-methyl-2-oxo-1,3-dioxolen-4-yl)methyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[[2′-[2-(triphenylmethyl)-2H-tetrazol-5-yl]biphenyl-4-yl]methyl]imidazole-5-carboxylate (57.83 g) were obtained. These were then dried in vacuo at 60 C. for approximately 15 hours, and the dry acetone solvate crystals (57.50 g) were obtained.

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

Reference£º
Patent; DAIICHI SANKYO COMPANY, LIMITED; US2012/59172; (2012); 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.

To 3L reaction flask 165.3g above prepared 1 – [[[2- (triphenylmethyl) -2H- tetrazole-5-yl] biphenyl-4-yl] methyl] -2- propyl-4- (1-hydroxy-1-methylethyl) imidazole-5-carboxylic acid (5-methyl-2-oxo-1,3-dioxolen-4-yl) methyl ester ( compound ) and 1.90L70% acetic acid, mechanical stirring, heated to 50 , the reaction 2.5h, an ice bath was added 1.1L of water was stirred.Filtration, the filtrate with 300ml * 3 times extracted with methylene chloride, the methylene chloride phase 150mL ¡Á 5 times with 5% acetic acid solution was washed with acetic acid solution and extracted with 250ml of dichloromethane, and the combined organic phases.The solvent was distilled off under reduced pressure, the residue was added 380mL of ethyl acetate was heated with stirring and cooling to precipitate a solid.Suction filtered, the filter cake was dried in vacuo to give a white solid product to 89.6 g, weight yield was 77.8%.To a 1L reaction flask above 85g crude product olmesartan medoxomil, 420ml of tetrahydrofuran was heated at reflux, was added 360ml of ethyl acetate, the ice bath was stirred for crystallization.Filtration cake blast drying to constant weight to give the product as a white solid 74.8g, a yield of 83.5% by weight., 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; Bengbu Tu Shan Fengyuan Pharmaceutical Co., Ltd.; Ma, Qisheng; Li, Baoqin; Sun, Peng; (18 pag.)CN105418593; (2016); A;,
1,3-Benzodioxole – Wikipedia
Dioxole | C3H4O2 – PubChem

80841-78-7, 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.80841-78-7. An updated downstream synthesis route of 80841-78-7 as follows.

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%.

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

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

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one, cas is 80841-78-7. Here is a downstream synthesis route of the compound 80841-78-7, 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%

Elementary reactions that involve the simultaneous collision of more than three molecules are highly improbable and have never been observed experimentally.

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

80841-78-7, 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.80841-78-7. A new synthetic method of this compound is introduced below.

10L autoclave, 520g (0.75mol) Compound 5, DMF3kg, potassium carbonate and 215.3g (1.6mol), stirred at room temperature 1.5-2.5h added to the system after 63.0g (0.38mol) of potassium iodide was added dropwise while – Chloromethyl -5-methyl-1,3-dioxol-2-one 40.0g (0.94mol). Dropping was completed, the reaction at room temperature after 3-4h TLC or HPLC in control, raw reaction was complete. To the system was added ethyl acetate and 3L 3L water and 200g of sodium chloride, stirring separated and the aqueous layer was washed with 3X1L ethyl acetate, the combined organic layers, the organic layer was dried, filtered and the solvent was evaporated cooling is added 0-10 , methanol was added 1600g beating 30min, filtered, then the filter cake was slurried at room temperature in acetonitrile 1600g 30min, filtered to afford intermediate 6 about 553.8g,

The chemical industry reduces the impact on the environment during synthesis, 4-(Chloromethyl)-5-methyl-1,3-dioxol-2-one, , I believe this compound will play a more active role in future production and life.

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