Category: Benzisoxazole

37924-85-9, Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.3-(Bromomethyl)benzo[d]isoxazole, cas is 37924-85-9,the Benzisoxazole compound, below Introduce a new synthetic route.

3-Bromomethyl-benzo[d]isoxazole-5-sulfonyl chloride Chlorosulfonic acid (1.5 ml, 22 mmol) was slowly added to 3-Bromomethyl-benzo[d]isoxazole (1.0 g, 4.7 mmol) at RT under argon. The reaction was heated at 90 C. for 12 h and then left at RT for 6 h. The resulting viscous oil was quenched over ice, extracted with EtOAc, dried over MgSO4 and concentrated in vacuo to a brown oil (1.17 g, 80% yield).; 3-Bromomethyl-benzo[d]isoxazole-5-sulfonyl chloride Chlorosulfonic acid (1.5 ml, 22 mmol) was slowly added to 3-Bromomethyl-benzo[d]isoxazole (1.0 g, 4.7 mmol) at RT under argon. The reaction was heated at 90 C. for 12 h and then left at RT for 6 h. The resulting viscous oil was quenched over ice, extracted with EtOAc, dried over MgSO4 and concentrated in vacuo to a brown oil (1.17 g, 80% yield). After reaction of this material with the core the aliphatic bromine may be displaced by an appropriate nucleophile.

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 37924-85-9.

Reference£º
Patent; Sequoia Pharmaceuticals; US2005/267074; (2005); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.Benzo[d]isoxazol-3-amine, cas is 36216-80-5,the Benzisoxazole compound. 36216-80-5. Here is a downstream synthesis route of the compound 36216-80-5

Benzisoxazole-3-amine 2 (2.68 g, 20 mmol) was dissolved in water (25 ml) and concentrated HCl (12.5 ml) under vigorous stirring in an ice/water bath. A freshly prepared, ice-cold solution of NaNO2 (1.4 g, 20 mmol) in water (10 ml) was added drop wise to the reaction mixture by keeping the internal temperature between 0 to 5 C. After the completion of addition, the reaction mixture was stirred for an additional 10 min. A freshly prepared solution of sodium azide (1.3 g, 20 mmol) in water (10 ml) was added drop wise to the reaction mixture via an additional funnel while keeping the internal temperature of the reaction mixture below 5 C. Upon complete addition of the sodium azide solution, the reaction mixture was stirred for an additional 20-30 min at 0 C, followed by stirring at room temperature for another 3 h. The reaction mixture was extracted with ethyl acetate EtOAc (25 ml) three times. The combined organic layer was washed with water (25 ml) and brine (25 ml), dried over anhydrous sodium sulphate and concentrated under reduced pressure to get crude benzisoxazole-3-azide 3, which was purified by column chromatography over silica gel (60-120 mesh) using hexane/EtOAc (8:2) as eluent. The pure benzisoxazole-3-azide 3 was stored at 2-5 C in the refrigerator.

36216-80-5. Other significant industrial processes that involve the use of heterogeneous catalysts include the preparation of sulfuric acid, the preparation of ammonia, the oxidation of ammonia to nitric acid, and the synthesis of methanol.36216-80-5, if you are interested, you can browse my other articles.

Reference£º
Article; Ashwini, Nanjundaswamy; Garg, Manoj; Mohan, Chakrabhavi Dhananjaya; Fuchs, Julian E.; Rangappa, Shobith; Anusha, Sebastian; Swaroop, Toreshettahally Ramesh; Rakesh, Kodagahalli S.; Kanojia, Deepika; Madan, Vikas; Bender, Andreas; Koeffler, H. Phillip; Basappa; Rangappa, Kanchugarakoppal S.; Bioorganic and Medicinal Chemistry; vol. 23; 18; (2015); p. 6157 – 6165;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

37924-85-9, A heterogeneous catalyst is a catalyst that is present in a different phase than the reactants. Such catalysts generally function by furnishing an active surface upon which a reaction can occur. 37924-85-9, name is 3-(Bromomethyl)benzo[d]isoxazole, introduce a new downstream synthesis route as follows.

3-Bromomethyl-benzo[d]isoxazole-5-sulfonyl chloride Chlorosulfonic acid (1.5 ml, 22 mmol) was slowly added to 3-Bromomethyl-benzo[d]isoxazole (1.0 g, 4.7 mmol) at RT under argon. The reaction was heated at 90 C. for 12 h and then left at RT for 6 h. The resulting viscous oil was quenched over ice, extracted with EtOAc, dried over MgSO4 and concentrated in vacuo to a brown oil (1.17 g, 80% yield).; 3-Bromomethyl-benzo[d]isoxazole-5-sulfonyl chloride Chlorosulfonic acid (1.5 ml, 22 mmol) was slowly added to 3-Bromomethyl-benzo[d]isoxazole (1.0 g, 4.7 mmol) at RT under argon. The reaction was heated at 90 C. for 12 h and then left at RT for 6 h. The resulting viscous oil was quenched over ice, extracted with EtOAc, dried over MgSO4 and concentrated in vacuo to a brown oil (1.17 g, 80% yield). After reaction of this material with the core the aliphatic bromine may be displaced by an appropriate nucleophile., 37924-85-9

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,37924-85-9,3-(Bromomethyl)benzo[d]isoxazole,its application will become more common.

Reference£º
Patent; Sequoia Pharmaceuticals; US2005/267074; (2005); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.3-(Bromomethyl)benzo[d]isoxazole, cas is 37924-85-9,the Benzisoxazole compound. 37924-85-9. Here is a downstream synthesis route of the compound 37924-85-9

To a solution of the above crude 3-(bromomethyl)benzo[d]isoxazole (15.3 g) in CH3CN (100 mL) was added a solution of KCN (4 g, 61 mmol) in water (19 mL). The resulting solution was stirred overnight at 40C, and then quenched with water (200 mL) and extracted with ethyl acetate (4 x 200 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous sodium sulfate and concentrated in vacuo to afford a residue, which was purified by a silica gelcolumn chromatography eluting with 1 % – 2% ethyl acetate in petroleum ether to afford 2-(benzo[d]isoxazol-3-yl)acetonitrile as a yellow solid (1.15 g, 15 ). LC/MS (ES, m/z): [M+H]+ 159.0 *H NMR (300 MHz, DMSO) delta 7.87 – 7.84 (d, / = 8.10 Hz, 1H), 7.66 – 7.61 (m, 2H), 7.47 – 7.40 (m, 1H), 4.13 (s, 2H), 37924-85-9

37924-85-9. Other significant industrial processes that involve the use of heterogeneous catalysts include the preparation of sulfuric acid, the preparation of ammonia, the oxidation of ammonia to nitric acid, and the synthesis of methanol.37924-85-9, if you are interested, you can browse my other articles.

Reference£º
Patent; BIOENERGENIX; MCCALL, John; KELLY, Robert, C.; ROMERO, Donna, L.; WO2014/66795; (2014); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

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.Benzo[d]isoxazol-5-amine, cas is 239097-74-6,the Benzisoxazole compound. An updated downstream synthesis route of 239097-74-6 as follows. 239097-74-6

Synthesis of N-benzofdlisoxazol-5-vl-3-chloro-2-methvl- benzenesulfonamide, STX 918 (KRB01046):; To a solution of 3-chloro-2-methylbenzenesulphonyl chloride (176 mg, 0.783 mmol) in dichloromethane (4 mL) was added pyridine (150 iuL, 1.86 mmol) and the mixture was stirred under N2 for 5 min, after which time 5-amino-1, 2-benzisoxazole [27] (100 mg, 0.746 mmol) was added. The resulting mixture was stirred for 2 h at room temperature, then saturated NaHCO3 solution (10 mL) was added and the mixture was extracted into ethyl acetate (20 mL). The organic phase was washed with brine, dried (Na2SO4), filtered and evaporated to give a residue that was purified using flash chromatography to afford a white solid (178 mg, 74%), single spot at Rf 0.69 (1: 1 hexane: ethyl acetate). mp 111.9-112. 4C, HPLC purity 97% (tR 2.44 min in 10% water-acetonitrile).’H NMR (CDCl3) : No. 8.62 (1H, d, J=1.0 Hz), 7.81 (1H, dd, J=7.9, 1.2 Hz), 7.55 (1H, dd, J=7.9, 1.0 Hz), 7.45 (2H, m), 7.17 (2H, m), 6.77 (1H, s, N-I), 2.72 (3H, s). LCMS: 321.01 (M-). FAB-MS (MH+, C14H11CIN203S) : calcd 323.0257, found 323.0271

Any one of these steps may be slow and thus may serve as the rate determining step. In general, however, in the presence of the catalyst, the overall rate of the reaction is faster than it would be if the reactants were in the gas or liquid phase., 239097-74-6

Reference£º
Patent; STERIX LIMITED; WO2005/42513; (2005); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

36216-80-5, 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. Benzo[d]isoxazol-3-amine, cas is 36216-80-5,the Benzisoxazole compound, below Introduce a new synthetic route.

To a solution of intermediate 3 (0.0025 mol) in isopropylether (5 ml) THF (1 ml) was added and the reaction mixture stirred at RT. Phenylisocyanaat (0.0050 mol) was added and the reaction mixture stirred overnight at RT. The precipitate was filtered off, washed with isopropylether and evaporated dried. The residue was further purified over reversed phase HPLC on a Xterra MS C18 column (3′. 5 Rm, 4.6 x 100 mm) with a flow rate of 1.6 ml/min (Elution conditions: three mobile phases (mobile phase A 95% e t..

25mM ammoniumacetate + 5% acetonitrile; mobile phase B: acetonitrile ; mobile phase C: methanol) were employed to run a gradient condition from 100 % A to 50% B and 50% C in 6.5 min., to 100 % B in 1 min, 100% B for 1 min. and re-equilibrate with 100 % A for 1.5 min.) yielding 0.010 g of compound 4 (yield of 5%, Melting Point 246C).

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, Benzo[d]isoxazol-3-amine.

Reference£º
Patent; JANSSEN PHARMACEUTICA N.V.; WO2005/89753; (2005); A2;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

37924-85-9, 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. 3-(Bromomethyl)benzo[d]isoxazole, cas is 37924-85-9,the Benzisoxazole compound, below Introduce a new synthetic route.

Step 1: To a -78 C solution of ((S)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[bl[1,4ldiazepin- 3-yl)-carbamic acid tert-butyl ester (807 mg, 2.91 mmol) in THF (19.4 mL) was added lithium bis(trimethylsilyl)amide (3.2 mL, 1.0 M solution in THF, 3.2 mmol), dropwise. The mixture was stirred at -78 C for 15 mm, then a mixture of Nal (523 mg, 3.49 mmol) and 3- (bromomethyl)benzo[dlisoxazole (740 mg, 3.49 mmol) in THF (9.7 mL) was added dropwise over 10 mm. The mixture was stirred at -78 C for 50 mm., warmed to RT and stirred for 4.5 h. The mixture was diluted with 1 N citric acid and extracted with EtOAc. The combined extractswere washed with sat. aq. NaHCO3, brine, dried over Na2SO4, filtered, and concentrated. The residue was purified by flash chromatography. The resulting material was repurified by flash chromatography to provide a -4:1 mixture of (S)-tert-butyl 1-(benzo[dlisoxazol-3-ylmethyl)-2- oxo-2,3 ,4,5-tetrahydro- 1 H-benzo [bI [1 ,4jdiazepin-3-ylcarbamate and (S)-tert-butyl 1- (benzo [djisoxazol-3 -ylmethyl)-4-oxo-2,3 ,4,5 -tetrahydro- 1 H-benzo [bI [1,41 diazepin-3-ylcarbamate (742 mg, 63 %) as a yellow foam. LC-MS mlz 431 [M+Naj.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it, 3-(Bromomethyl)benzo[d]isoxazole.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; CHEN, Shaoqing; DONNELL, Andrew F.; KESTER, Robert Francis; LE, Kang; LOU, Yan; MICHOUD, Christophe; REMISZEWSKI, Stacy; RUPERT, Kenneth C.; WEISEL, Martin; WO2015/71393; (2015); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.Ethyl 6-bromobenzo[d]isoxazole-3-carboxylate, cas is 651780-27-7,the Benzisoxazole compound, below Introduce a new synthetic route., 651780-27-7

651780-27-7, 20a) Ethyl 6-(4-hydroxyphenyl)-l,2-benzisoxazole-3-carboxylateEthyl 6-bromo-l,2-benzisoxazole-3-carboxylate (0.34 g, 1.26 mmol), (4- hydroxyphenyl)boronic acid (0.21, 1.51 mmol), tetrakis(triphenylphosphine)palladium (0) (0.06 g, 0.05 mmol) and 2 M sodium carbonate (5 mL) in 1 ,2-dimethoxyethane (6 mL) were stirred at 80 0C for 1 hour. The reaction mixture was diluted with water, followed by ethyl acetate. The layers were separated and the ethyl acetate layer was washed with brine, dried over magnesium sulfate, filtered, and concentrated to afford the crude material. The crude material was purified using hexanes: ethyl acetate (0 to 40% ethyl acetate) to afford a mixture of desired product, plus the free acid of the desired product, 6-(4-hydroxyphenyl)-l,2- benzisoxazole-3-carboxylic acid. All the fractions were combined and concentrated. The mixture was then dissolved in ethanol. Thionyl chloride was added, and the reaction mixture was reflux for 8 days. The reaction mixture was cooled to room temperature and concentrated. The concentrated material was diluted with 5% sodium bicarbonate, and extracted with ethyl acetate. The ethyl acetate layer was washed with water followed by brine, dried over magnesium sulfate, filtered, and concentrated. The crude material was purified using hexanes: ethyl acetate (0 to 100% ethyl acetate) to afford 0.044 g (13%) of ethyl 6-(4-hydroxyphenyl)- 1 ,2-benzisoxazole-3- carboxylate. 1H NMR (400 MHz, d6-DMSO): delta 9.76 (s, IH), 8.05 (m, 2H), 7.79 (dd, J = 8, 1 Hz, IH), 7.65 (d, J = 9 Hz, 2H), 6.88 (d, J = 9 Hz, 2H), 4.47 (q, J = 7 Hz, 2H), 1.39 (t, J = 7 Hz, 3H).

According to the analysis of related databases, 651780-27-7, the application of this compound in the production field has become more and more popular.

Reference£º
Patent; SMITHKLINE BEECHAM CORPORATION; WO2008/157270; (2008); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

Rate laws may be derived directly from the chemical equations for elementary reactions. This is not the case, however, for ordinary chemical reactions.Benzo[d]isoxazol-3-amine, cas is 36216-80-5,the Benzisoxazole compound, below Introduce a new synthetic route., 36216-80-5

EXAMPLE 12 3-[(4-pyridinyl)amino]-1,2-benzisoxazole A mixture of 3-amino-1,2-benzisoxazole (9.94 g, 74.18 mmole, prepared according to a method described in G. M. Shutske and K. J. Kapples, J. Heterocyclic Chem., 26, 1293 (1989)), 4-chloropyridine hydrochloride (22.27 g, 197 mmole) and 1-methyl-2-pyrolidinone was stirred vigorously at 130 C. for three hours. The reaction mixture was cooled, diluted with NaHCO3, and extracted with EtOAc, after which the organics were washed with water, dried (MgSO4), and concentrated. The residue was purified by flash chromatography (florisil, EtOAc), and then triturated with diethyl ether to yield 4.04 g (26%) of a fine brown solid. A 2.0 g portion was dissolved in boiling methanol and treated with charcoal (Darco) after which the product crystallized to yield 1.38 g of pale yellow crystals, mp 203 C. (dec.). ANALYSIS: Calculated for C12 H9 N3 O: 68.24% C; 4.29% H; 19.89% N; Found: 68.14% C; 4.12% H; 20.06% N.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 36216-80-5, other downstream synthetic routes, hurry up and to see.

Reference£º
Patent; Hoechst-Roussel Pharmaceuticals Incorporated; US5328920; (1994); A;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism. 16263-54-0, If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular.3,6-Dichlorobenzo[d]isoxazole, cas is 16263-54-0,the Benzisoxazole compound. A new synthetic method of this compound is introduced below.

3,6-dichlorobenzisoxazole (5.2 g, 27.8 mmol) and piperazine anhydride (24 g, 278 mmol) were placed in an eggplant type flask and reacted at 120 C. for 24 hours. After completion of the reaction, 52 ml of ice water was added to quench , Add 15 ml of 50% NaOH solution to the solution, stir for 5 minutes, extract with 30 ml * 3 dichloromethane, combine dichloromethane layer, wash with saturated brine 20 ml, dehydrate with anhydrous MgSO 4, evaporate to dryness, Isolated by alumina (200-300 mesh) column chromatography eluting with dichloromethane: methanol = 100: 1 to obtain 4.7 g of 6-chloro-3-piperazinyl-benzisoxazole, Yield is 71%.

16263-54-0, A chemical reaction often occurs in steps, although it may not always be obvious to an observer. Thank you very much for taking the time to read this article. If you are also interested in other aspects of 16263-54-0, you can also browse my other articles.

Reference£º
Patent; JIANGSU HENGYI PHARMACEUTICAL COMPANY LIMITED; SHANGHAI INSTITUTE OF PHARMACEUTICAL INDUSTRY; Li, JIANQI; PENG, SHAOPING; CAI, WANGPING; GAO, KAI; (39 pag.)JP5714152; (2015); B2;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics