Category: isothiazole

936-16-3, 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Potassium carbonate was dissolved in DMF, and 1,2-bezeneisothiazolin-1,1-dioxide (8) (1 equiv.) in dichloromethanewas added to the reaction solution, and stirred for overnight. Then,the reaction mixture was filtered through Celite, and washed with1 N HCl and saturated sodium hydrogen carbonate solution. Residualsolution was dried over magnesium sulfate, and concentratedin vacuo, and purified by column chromatography to afford the titlecompound.

As the paragraph descriping shows that 936-16-3 is playing an increasingly important role.

Reference£º
Article in Press; Hong, Jin Ri; Choi, Young Jin; Keum, Gyochang; Nam, Ghilsoo; Bioorganic and Medicinal Chemistry; (2017);,
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87691-88-1, 3-Piperazinobenzisothiazole hydrochloride is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 36 3-[4-[1-(1,2-Benzisothiazol-3-yl)-4-piperazinyl]butyl]-5,5-dimethyl-4-thiazolidinone hydrochloride A mixture of 3-(4-bromobutyl)-5,5-dimethyl-4-thiazolidinone (3.50 g), 1-(1,2-benzisothiazol-3-yl)piperazine hydrochloride (3.70 g), K2 CO3 (6.34 g), NaI (330 mg) and acetonitrile (175 mL) was heated at 95 C. (bath temperature) under nitrogen. After 21 hours, TLC analysis (silica gel, 5% MeOH/CH2 Cl2) showed the absence of starting bromide and the presence of a major product, Rf =0.33. The reaction mixture was cooled to room temperature, ethyl acetate (150 mL) was added, and the mixture filtered. The filtrate was concentrated in vacuo to an oil which was triturated with ethyl acetate. The mixture was filtered again and the filtrate, after concentration, was chromatographed (Waters Prep 500, one silica gel column, 3% MeOH/CH2 CL2) to give 3.48 g of a viscous oil. The oil was dissolved in diethyl ether (500 mL), the solution filtered to remove a fluffy solid, and the filtrate acidified to pH=1 (hydrion paper) with an HCl/diethyl ether solution. The resultant salt (3.23 g) was recrystallized from ethanol/ethyl acetate yielding 2.29 g of white needles, mp 222-227 C. ANALYSIS: Calculated for C20 H28 N4 OS2 ¡¤HCl: 54.46%C; 6.63%H; 12.70%N; 8.04%Cl. Found: 53.93%C; 6.73%H; 12.58%N; 8.57%Cl.

87691-88-1 3-Piperazinobenzisothiazole hydrochloride 11521711, aisothiazole compound, is more and more widely used in various.

Reference£º
Patent; Hoechst-Roussel Pharmaceuticals Incorporated; US5229388; (1993); A;,
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94594-90-8, (3aS,6S,7aS)-8,8-Dimethylhexahydro-1H-3a,6-methanobenzo[c]isothiazole 2,2-dioxide is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Take 30 g of the resulting intermediate, add 250 mL of dichloromethane. After stirring to clarify,37 g of camphorsulfonamide and 9. 6 g of N, N’-4-dimethylaminopyridine (DMAP) were added and the reaction was cooled to 10 ¡ã C. A solution of 75 g of N, N’-dicyclohexylcarbodiimide (DCC) and 50 mL of DCM was added dropwise, and the temperature of the dropping process was below 20 ¡ã C. After completion of the dropwise addition, the reaction was carried out at 20 ¡ã C to 25 ¡ã C for 18 hours. After completion of the reaction, the reaction solution was filtered and the resulting filtrate was washed once with 50 mL of water and once with 25 mL of saturated brine. After the dichloromethane phase was concentrated, 300 mL of n-heptane was added to precipitate a solid. Filtered and then dried to give 56 g of a solid, 99.8percent purity, 91percent yield.

The synthetic route of 94594-90-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Dalian Honkai Chemical Development Co., Ltd; Sun, Liquan; Zhao, xinjun; Feng, Yan-shu; Gao, Hanrong; cornille, Fabrice; Canevotti, Renato; (12 pag.)CN106588841; (2017); A;,
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288-16-4, Isothiazole is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Under nitrogen, compound l (20 g, 0.235 mol) was added to dry 100 ml of ether and stirred and dissolved(0.24 mol 1) was added dropwise thereto at a temperature below 0 C, and the mixture was kept at 0 C or less during the dropwise addition.Temperature reaction until no compound 1.To the reaction solution was added dropwise bromine (0.5 mol)During the dropping process, it is kept below 0 C,After the dropwise addition, slowly rise to room temperature,After stirring for half an hour, the reaction was quenched by the addition of hydrochloric acid solution (2N, 500 ml).Layered,The aqueous phase was treated with ether (200 ml * 3)After extraction,Combined organic phase,Sodium dithionite solution (100 ml * 2),Dried over anhydrous sodium sulfate,Filtered and concentrated to dry,To give a yellow oily compound.

As the paragraph descriping shows that 288-16-4 is playing an increasingly important role.

Reference£º
Patent; Tianjin Jinyao Group Co., Ltd.; Li Jing; He Guangjie; Yang Xinyi; Wang Shuli; Chen Liying; Hu Xiaoyun; Sun Liang; (35 pag.)CN106890141; (2017); A;,
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288-16-4, Isothiazole is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Compound 1 (20 g, 0.235 mol) was added under stirring with nitrogen to dry 100 ml of ether and stirred to dissolve,And then cooled to below 0 ,To this was added n-butyllithium (0.24 mol)During the dropping process, the temperature was kept below 0 C,After the dropwise addition, the incubation reaction was carried out until no compound 1 was added.To the reaction solution was added bromine (0.5 mol)During the dropping process, the temperature was kept below 0 C,After the dropwise addition, slowly raise to room temperature,After stirring for half an hour, the reaction was quenched by the addition of hydrochloric acid solution (2N, 500 ml).The aqueous phase was extracted with ether (200 ml * 3) and discarded.The combined organic phase, sodium dithionite solution (100 ml * 2)Dried over anhydrous sodium sulfate, filtered and concentrated to dryness,A yellow oily compound was prepared.

288-16-4 Isothiazole 67515, aisothiazole compound, is more and more widely used in various.

Reference£º
Patent; Tianjin Jinyao Group Co., Ltd.; Li Jing; He Guangjie; Yang Xinyi; Wang Shuli; Chen Liying; Hu Xiaoyun; Sun Liang; (37 pag.)CN106890176; (2017); A;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.27148-03-4,Benzo[d]isothiazole-3(2H)-thione 1,1-dioxide,as a common compound, the synthetic route is as follows.

The [Zn(tsac)2(o-phen)] complex was prepared by addition of a dissolution of Zn(NO3)26H2O (14.85 mg, 0.049 mmol, 2 ml) into a thiosaccharine solution (20 mg, 0.1 mmol/ethanol:water 1:1,2 ml). A o-phenantroline solution was finally added drop by drop (ethanol:water 1:1, 2 ml) and a yellow power was obtained. The resulting yellow solid was filtered and washed with cold water. Crystals suitable for X-ray diffraction studies were produced by slow diffusion of diethyl ether to the mother solution. Yield: 74% Molar Conductivity (mS M1) = 22.4. Calculated analytical percent composition for C26H16N4O4S4Zn: C = 48.516%; H = 2.267%; N =8.592%; Found: C = 48.638%; H = 2.511%; N = 8.725%. Soluble indimethyl sulfoxide and dimethyl formamide. Non-soluble in other solvents (methanol, chloroform, dichloromethane, acetone, water). UV-Visible [DMSO, kmax nm]: 341. 1HNMR (300 MHz,DMSO) d 8.72-9.21 (m, 1H), 8.94 (m, 1H), 8.31(m, 1H), 8.03-8.21 (m, 1H), 7.91 (m, 1H), 7.57-7.72 (m, 3H). 13CNMR (75 MHz, DMSO) d 191.81 (C1), 149.09 (C8), 140.02 (C10), 139.36(C12), 137.94 (C7), 136.52 (C2), 132.12 (C4), 130.91 (C5), 128.70 (C11), 127.37 (C13), 125.10 (C3), 125.81 (C9), 119.03 (C6).

The synthetic route of 27148-03-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Delgado, Fermin; Freire, Eleonora; Baggio, Ricardo; Gonzalez Pardo, Veronica; Dorn, Viviana; Dennehy, Mariana; Inorganica Chimica Acta; vol. 479; (2018); p. 266 – 274;,
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87691-88-1, 3-Piperazinobenzisothiazole hydrochloride is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

100.0 g of 6-Chloro-5-(2-chloroethyl) oxindole, 133.39 g of 3-(l-Piperazinyle)- 1,2-benzisothiazole hydrochloride, 105.94 g of sodium carbonate and 1500 mL of water were taken in round bottom flask and heated to 1000C to HO0C for 24-26 hours. The reaction mixture was cooled and maintained for 30 min. The solid was filtered and washed with water. The wet solid was further slurried with water followed by adjusting the pH of the reaction mass with dilute acetic acid to 6.0 to 7.5 and maintain the reaction mass for 1-2 hours. The solid was filtered and washed with water. The wet solid was treated with isopropanol 1100 mL in round bottom flask and heated at 750C to 850C for 2 hours. The reaction mixture was cooled, the obtained solid was filtered and washed with isopropanol. The wet solid was dried at 6O0C to 650C for 8-10 hours to obtain crude Ziprasidone base.

87691-88-1 3-Piperazinobenzisothiazole hydrochloride 11521711, aisothiazole compound, is more and more widely used in various.

Reference£º
Patent; CADILA HEALTHCARE LIMITED; SHAH, Niraj, Shyamlal; DWIVEDI, Shriprakash, Dhar; WO2010/73255; (2010); A1;,
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