Category: Benzisoxazole

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

To a solution of triethylamine (0. 0025 mol) in CH2Cl2 (5 ml) benzoylchloride (0.0025 mol) was added. The mixture stirred at RT and intermediate 3 (0.0025 mol) in CH2C12 (5 ml) added dropwise. The reaction mixture was stirred overnight at RT. The mixture was washed 2 times with H20. The organic layer was separated, dried (MgS04), filtered off and the solvent was evaporated. The residue was purified by column chromatography over silicagel (eluent CH2Cl2) yielding O. OlOg compound 9 (yield of 2%, Melting Point 133C) and a fraction which was further purified by column chromatography over silicagel (eluent hexane/CH2Cl2) yielding 0.225 g of compound 10 (yield of 38%, Melting Point 97C-100C), and 0.100 g of compound 11 (yield of 17%, Melting Point 154C-160C).

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

239097-74-6, 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. 239097-74-6, name is Benzo[d]isoxazol-5-amine, introduce a new downstream synthesis route as follows.

Synthesis of N-benzofdlisoxazol-5-vl-2, 5-dichloro-benzenesulfonamide, STX 920 (KRB01048):; To a solution of 2, 5-dichlorobenzenesulphonyl chloride (192 mg, 0.783 mmol) in dichloromethane (4 mL) was added pyridine (150 uL, 1.86 mmol) and the mixture was stirred under N2 for 5 min, after which time 5-amino-1, 2-benzisoxazole (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 (174 mg, 68%), single spot at Rf 0.68 (1: 1 hexane: ethyl acetate). mp 172.9- 173. 6C, HPLC purity 99+% (tR 2.41 min in 10% water-acetonitrile).’H NMR (CDCI3) : 5 8.64 (1H, s), 7.89 (1H, d, J=2.2 Hz), 7.56-7. 28 (5H, m). LCMS: 341.07 (M-). FAB-MS (MH+, C13H8Cl2N2O3S) : calcd 342.9711, found 342.9710.

According to the analysis of related databases, 239097-74-6, the application of this compound in the production field has become more and more popular.

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

One of the major reasons is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time, to discover the sequence of events that occur at the molecular level.5-Methylbenzo[d]isoxazol-3-amine, cas is 89976-56-7,the Benzisoxazole compound, introduce a new downstream synthesis route. 89976-56-7

Benzoic isoxazol-3-bis(N,N-t-butoxycarbonyl)amine (122): To a solution of 121 (148 mg, 1 mmol) in DCM (2 mL) was added di-t-butyldicarbonate (546 mg, 2.5 mmol), DIEA (0.348 mL, 2 mmol), and DMAP (22.2 mg, 1 mmol) at O0C. The reaction was warmed up to RT and stirred for 4 hr and then diluted with ethyl acetate and treated with aqueous ammonium chloride to pH 6. The organic layer was separated and washed with brine and concentrated in vacuo. The residue purified by silica gel chromatography using 100% hexane as the eluent to yield 122 (347 mg, 100%), LC-MS (ESI) m/z 348.8.

In every case, we must determine the overall rate law from experimental data and deduce the mechanism from the rate law (and sometimes from other data). you can also browse my other articles about 89976-56-7, if you are interested., 89976-56-7

Reference£º
Patent; DAIAMED, INC.; WO2006/108039; (2006); A2;,
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. 36216-80-5, If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular.Benzo[d]isoxazol-3-amine, cas is 36216-80-5,the Benzisoxazole compound. A new synthetic method of this compound is introduced below.

A solution of 1 ,2-benzisoxazol-3-amine (1.00 g; CASNo. 36216-80-5) and triethylamine (1.09 mL) in acetonitrile (5 mL) was added dropwise to at 0 0C solution of phenyl chloroformate (0.989 mL) in THF (20 mL). The reaction was stirred at 0 0C for 1 h and then allowed to warm to room temp overnight. The reaction was diluted with ethyl acetate and washed with 1 N HCI and brine. The organic layer was dried over sodium sulfate, filtered, and concentrated to give the crude product as a reddish brown solid. The solid was triturated with refluxing diisopropyl ether, cooled to room temp, and filtered to give the final product as a tan solid (1.22 g, 64%). m/z 255 (MH+)., 36216-80-5

36216-80-5, 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 36216-80-5, you can also browse my other articles.

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Patent; PFIZER INC.; WO2009/127948; (2009); A1;; ; Patent; PFIZER INC.; WO2009/127949; (2009); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

651780-27-7, 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.

Toluene (40 mL) was added to a flask containing ethyl [6-BROM-1,] 2-benzisoxazole-3-carboxylate (3.15 g, 11.7 mmol), tetrakis (triphenylphosphine) palladium [(0)] (835 mg, 0.723 mmol, Strem), cesium carbonate (4.12 g, 12.6 mmol, Aldrich), and 2- (trifluoromethyl) phenylboronic acid (2. [38] g, 12.5 mmol, Aldrich) under argon. This mixture was heated in a 100 C oil bath for 35 hours. The mixture was diluted with EtOAc (250 mL) and washed with 4: 1 water: brine (250 [ML)] followed by brine (250 mL). The organics were filtered through a [1″PLUG] of silica gel and evaporated. Product was split in two, adsorbed onto silica gel, and purified on Biotage Flash 40 M+ silica cartridges using 20% EtOAc in heptane. Yield was 2.08 g of orange solid. [‘H] NMR (400 MHz, DMSO-d6) [5] ppm 1.42 (t, [J=7.] 15 Hz, 3 H) 4.51 (q, [J=7.] 05 Hz, 2 H) 7.52 (d, J=7. 46 Hz, [1] H) 7.51 (d, [J=8.] 09 Hz, 1 H) 7.71 (t, J=7. 57 Hz, [1] H) 7.79 (t, [J=7.] 36 Hz, 1 H) 7.91 (d, [J=7.] 67 Hz, [1] [H)] 7.93 (s, 1 H) 8.14 (d, J=8. 09 Hz, 1 H).

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; PHARMACIA & UPJOHN COMPANY; WO2004/18428; (2004); A1;,
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. If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular.Ethyl 6-bromobenzo[d]isoxazole-3-carboxylate, cas is 651780-27-7,the Benzisoxazole compound. A new synthetic method of this compound is introduced below. 651780-27-7

(21). Iris{dibenzylideneacetoae)dipailadiuffi (123.6 mg, 0.14 mmol, 9.0 MO1%), XantPhos ( 104 mg, 0. 8 mmo’l. 12 moi%), ethyl 6-bromobenzo|d]isoxazole-3-carboxylate (608 mg, 2.25 mmol, 1.5 eq.),l- jX4 raemoxypheny1)me&yI}pyjrazofo^^(381 mg, 1.5 mmol, 1.0 eq.) and cesium carbonate (731 rag, 2.25 mmol. 1 ,5 eq.) were charged in a microwave vial. The vial was evacuated and purged with nitrogen (3X) and 1,4-dioxane (7.5 mL) was added. The reaction mixture was subjected to a microwave reactor tor 140 “C. After 2 h, the reaction mixture was cooled and filtered through a pad of Celite which was washed with EtOAc. Solvents were removed. Purification using reverse phase (Giison HPLC, acidic method (ACN water/0.1% TFA), gradient; 61-91%). Giison fractions were neutralized with sat solo. NaHC:::1.8, 8.8 H IH), 7.48 (dd, ./ – 4.3, 8.6 Hz, l H), 730 (d, J:::8.7 Hz, 2H), 6.88 (ddd, J – 2.9, 4.9, 8.7 Hz, 2H), 5.56 (s, 2H), 4.87 (q, 7.0 Hz, 2H), 3.70 (s, 3H), 1.41 (t, J = 3.2 Hz, 3H). ES-MS GammaMu+l f : 443.3.

651780-27-7, There are, however, a few established termolecular elementary reactions. The reaction of nitric oxide with oxygen appears to involve termolecular steps. you can also browse my other articles about 651780-27-7

Reference£º
Patent; VANDERBILT UNIVERSITY; CONN, P. Jeffrey; HOPKINS, Corey R.; LINDSLEY, Craig W.; NISWENDER, Colleen M.; ENGERS, Darren W.; PANARESE, Joe; BOLLINGER, Sean; ENGERS, Julie; (157 pag.)WO2016/115282; (2016); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

An elementary termolecular reaction involves the simultaneous collision of three atoms, molecules, or ions.Ethyl 6-bromobenzo[d]isoxazole-3-carboxylate, cas is 651780-27-7,the Benzisoxazole compound. 651780-27-7. Here is a downstream synthesis route of the compound 651780-27-7

651780-27-7, To a stirred solution of ethyl 6-bromo-1,2-benzoxazole-3-carboxylate (1.1 g) in THF (10 ml) and EtOH (3 ml), LiBH4 (0.133 g) was added drop wise at 0oC under inert atmosphere. The re- action mixture was stirred at 0oC for 2 h. Reaction was monitored by TLC. After the completion, the reaction mixture was diluted with Water (20 ml), quenched with 5% NaOH solution and ex- tracted with Ethyl acetate (30 ml x 2). The combined organic extracts were dried over Na2SO4, filtered and concentrated under reduced pressure. The crude product was purified by flash chro- matography (eluting in 15-20% ethyl acetate in heptane as a mobile phase) to afford (0.8 g) of the title compound. HPLC/MS (method 1): Rt : 1.587 min; MS: m / z = 229 (M+1).

651780-27-7. 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.651780-27-7, if you are interested, you can browse my other articles.

Reference£º
Patent; BASF SE; NARINE, Arun; ADISECHAN, Ashokkumar; VYAS, Devendra; DATTA, Gopal Krishna; VALLINAYAGAM, Ramakrishnan; CHAUDHURI, Rupsha; SAMBASIVAN, Sunderraman; (127 pag.)WO2018/177781; (2018); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

851768-35-9, 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. 5-Amino-3-methylbenzo[d]isoxazole, cas is 851768-35-9,the Benzisoxazole compound, below Introduce a new synthetic route.

Synthesis of 3-chloro-2-methyl-N-(3-methyl-benzo[d]isoxazol-5-yl)- benzenesulfonamide, STX 874 (KRB01027):; To a solution of 3-chloro-2-methylbenzenesulphonyl chloride (128 mg, 0.567 mmol) in dichloromethane (3 mL) was added pyridine (110 muL, 1.35 mmol) and the mixture was stirred under N2 for 5 min, after which time 5-amino-3-methyl-1, 2-benzisoxazole [26] (80 mg, 0.54 mmol) was added. The resulting mixture was stirred for 4 h at room temperature, then saturated NaHCO3 solution (8 mL) was added and the mixture was extracted into ethyl acetate (15 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 (88 mg, 48%), single spot at Rf 0.58 (1: 1 hexane: ethyl acetate). mp 162.8-163. 2C, HPLC purity 99+% (tR 2.26 min in 10% water- acetonitrile).’H NMR (CDC13) : 6 7.80 (1H, dd, J=7.9, 1.3 Hz), 7.55 (1H, dd, J=8. 1, 1.1 Hz), 7.38 (2H, m), 7.17 (1 H, t, J=8.1 Hz), 7.10 (1H, dd, J=8.8, 2.2 Hz), 6.72 (1H, s, N-lez 2.72 (3H, s), 2.50 (3H, s). LCMS: 320.00 (M-CH3). FAB-MS (MH+, C15H13ClN2O3S) : calcd 337.0413, found 337.0422.

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 5-Amino-3-methylbenzo[d]isoxazole.

Reference£º
Patent; STERIX LIMITED; WO2005/42513; (2005); A1;,
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 : A mixture of tert-butyl methyl((25′)-l-oxo-l-(4-oxo-2′,3′,4,5,5′,6′-hexahydro-3H- spiro[benzo[][l,4]oxazepine-2,4′-pyran]-3-ylamino)propan-2-yl)carbamate (156 mg, 360 muetaiotaomicron), 3-(bromomethyl)benzo[d]isoxazole (83.9 mg, 396 muetaiotaomicron), Cs2C03 (141 mg, 432 muetaiotaomicron) and Nal (64.7 mg, 432 muiotaetaomicron) in DMF (900 mu) was stirred at RT for 18 h, diluted with EtOAc, washed with H20, brine, dried over Na2S04, filtered, and the filtrate concentrated to give a residue that was purified by silica gel chromatography. The resulting material was purified by supercritical fluid chromatography (SFC) to provide tert-butyl (5)-l-((5)-5-(benzo[ ]isoxazol-3-ylmethyl)-4- oxo-2′,3^4,5,5^6′-hexahydro-3H-spiro|enzo[][l,4]oxazepine-2,4′-pyran]-3-ylamino)-l- oxopropan-2-yl(methyl)carbamate (54.5 mg, 27 %) as a white foam., 37924-85-9

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; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; DONNELL, Andrew F.; HAN, Xiaochun; KESTER, Robert Francis; KONG, Norman; LE, Kang; LOU, Yan; MICHOUD, Christophe; MOLITERNI, John Anthony; REMISZEWSKI, Stacy; RUPERT, Kenneth Carey; YUN, Weiya; WO2014/23708; (2014); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics

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. 719-64-2, name is 5-Chloro-3-phenylbenzo[c]isoxazole, introduce a new downstream synthesis route as follows. 719-64-2

1) Weigh 180 g of raw material 5-chloro-3-phenyl-2,1-benzisoxazole into 1.5 L of anhydrous methanol and 1.5 L of acetonitrile,After stirring and dissolving, add 10g Pd/C catalyst with Pd content of 3%, stir and mix to form material I,The flow rate of the slurry pump was adjusted so that the flow rate of the material I was 40.0 g/min and entered the preheating module of the microreactor. 2) Adjust the flow rate of the H2 gas flowmeter to 350ml/min, and directly enter the reaction module group and material I to undergo catalytic hydrogenation reaction without preheating.As shown in Figure 2, the molar ratio of 5-chloro-3-phenyl-2,1-benzisoxazole to hydrogen is 1:1.2, the reaction temperature is 80C, the residence time of the reaction is 35s, and the reaction pressure is 1.0Mpa; then enter the cooling module, cooling module temperature is 30 C,Collect the reaction solution from the outlet of the cooling module, recover the catalyst by filtration, and recover the solvent by distillation under reduced pressure.The residue was recrystallized from 80% ethanol solution to obtain the target product 2-amino-5-chlorobenzophenone, 168.96g, yield 92.79%, purity 99.68%.

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, 5-Chloro-3-phenylbenzo[c]isoxazole.

Reference£º
Patent; Heilongjiang Xinchuang Bio-technology Development Co., Ltd.; Ren Jiqiu; Yang Kun; Li Haitao; (10 pag.)CN107935872; (2018); A;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics