Tag: M.W:100-200

Name is 3-Chlorobenzo[d]isothiazole, as a common heterocyclic compound, it belongs to isothiazole compound, and cas is 7716-66-7, its synthesis route is as follows.,7716-66-7

A solution of the product from step b) (200 mg) and 3-chloro-1, 2-benzisothiazole (171mg) in NMP (2ml) and 4M hydogen chloride in dioxan (0.2 ml) was stirred at [140¡ãC] overnight and then at [150 ¡ãC] for 1 hour. and evaporated. The residue was taken up in ethyl acetate, washed with brine (3X), dried [(MGSO4)] and evaporated. The residue was purified by silica chromatography using 20percent acetone in isohexane as eluent to give the title compound (219 mg). MS: APCI (-ve): 331 [[M+H] +] [APOS;H] NMR (DMSO-d6) [8] 8.33 [(1H,] s), 8.01 [(1H,] d), 7.66 [(1H,] d), 7.56 [(1H,] t), 7.39 [(1H,] t), 6.99 [(1H,] d), 2.34 (3H, s), 1.79 (3H, d).

With the complex challenges of chemical substances, we look forward to future research findings about 3-Chlorobenzo[d]isothiazole

Reference£º
Patent; ASTRAZENECA AB; WO2003/101981; (2003); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belongs to isothiazole compound, name is Benzo[d]isothiazole-3(2H)-thione 1,1-dioxide, and cas is 27148-03-4, its synthesis route is as follows.,27148-03-4

TsacH (63mg, 0.32mmol) was added to a cyclohexane solution (20mL) of [Ru3(CO)12] (100mg, 0.16mmol) and the reaction mixture was heated to reflux for 30min. The reaction mixture was then allowed to cool at room temperature. The solvent was removed under reduced pressure and the residue separated by TLC on silica gel. Elution with n-hexane/CH2Cl2 (v/v, 1:1) developed a yellow-orange band corresponding to [HRu5(CO)15(mu-N,S-tsac)(mu5-S)] (5). The product was recrystallized from n-hexane/CH2Cl2 at 4C to afford 5 as red crystals (18mg, 17%). Data for 5: Anal. Calc. for C22H5NO17Ru5S3: C, 22.84; H, 0.44; N, 1.21. Found: C, 23.14; H, 0.48; N, 1.23%. IR (nuCO, CH2Cl2): 2106w, 2083s, 2071vs, 2034s, 2014s, 1967w cm-1. 1H NMR (CDCl3): delta 7.88 (d, J 7.6Hz, 1H), 7.81 (t, J 7.6Hz, 1H), 7.72 (d, J 7.6Hz, 1H), 7.66 (t, 7.6Hz, 1H),-17.87 (s, 1H).

With the complex challenges of chemical substances, we look forward to future research findings about 27148-03-4,belong isothiazole compound

Reference£º
Article; Mia, Md. Jadu; Reza, Md. Selim; Bhoumik, Nikhil C.; Ghosh, Shishir; Nesterov, Vladimir N.; Richmond, Michael G.; Kabir, Shariff E.; Journal of Organometallic Chemistry; vol. 906; (2020);,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO477,mainly used in chemical industry, its synthesis route is as follows.,936-16-3

Step2. A mixture of compound 17 (300 mg, 1.18 mmol), 1 (240 mg, 1.42 mmol), Cs2CO3 (769 mg, 2.36 mmol), Cul (67 mg, 0.35 mmol) and 2-(dimethylamino)acetic acid hydrochloride (49 mg, 0.354 mmol) in dioxane (20 mL) was degassed and purged with N2 for (3X). The mixture was stirred at 100¡ãC for 12 hrs, filtered, and then diluted with ethyl acetate (50 mL). The solution was washed with saturated brine (50 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to give 18 as a dark brown oil which was used without further purification.

With the synthetic route has been constantly updated, we look forward to future research findings about 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,belong isothiazole compound

Reference£º
Patent; NUMERATE, INC.; RAIMUNDO, Brian; KOLTUN, Elena S.; GRIFFIN, John; STANGELAND, Eric; (93 pag.)WO2018/49324; (2018); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belong isothiazole compound,3,4-Dichloroisothiazole-5-carboxylic acid,18480-53-0,Molecular formula: C4HCl2NO2S,mainly used in chemical industry, its synthesis route is as follows.,18480-53-0

In a 250 ml round bottom flask in water are sequentially added methanol 80 ml, 3,4-dichloro-thiazole-5-carboxylic acid (10.7 g, 53.8 mmol), gradually under the condition ice bath adds by drops two chlorine Asia sulphone (9.6 g, 80.7 mmol), the drop finishes heated to 40 degree c stirring 5 hours, after the reaction is complete to concentrate, add ethyl acetate to dissolve the filter, the filtrate of the distilled water are used to, saturated NaHCO3saturated NaCl wash again, anhydrous magnesium sulphate dried, concentrated, vacuum drying the white solid obtained 11.2 g, yield 98percent

With the synthetic route has been constantly updated, we look forward to future research findings about 3,4-Dichloroisothiazole-5-carboxylic acid,belong isothiazole compound

Reference£º
Patent; Nankai University; Fan, Zi Jin; Zong, guangning; Li, Feng Yun; Li, yuedong; Li, Juan Juan; Ji, xiaotian; Chen, Lai; Zhu, Yu Jie; Liu, chaolun; Cheng, shengming; (21 pag.)CN103497182; (2016); B;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.10271-85-9,Isothiazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

Step 1: N-methoxy-N-methylisothiazole-5-carboxamide To a solution of 5-isothiazole carboxylic acid (5 g, 38.7 mmol) in dichloromethane (200 mL), 4-(dimethylamino)pyridine (473 mg, 3.87 mmol), N,O-dimethylhydroxylamine hydrochloride (4.53 g, 46.4 mmol) (N-(3-dimethylaminopropyl)-N’-ethyl-carbodiimide hydrochloride (8.17 g, 42.6 mmol) and triethylamine (13.63 muL, 97.0 mmol) were added and the reaction was stirred overnight at room temperature. The reaction mixture was then successively washed with 1N HCl, 1N NaOH and brine. The organic layer was dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue obtained was used as such for the next step. 1H NMR (400 MHz, acetone-d6): 8.59 (s, 1H), 7.97 (s, 1H), 3.94 (s, 3H), 3.38 (s, 3H)., 10271-85-9

10271-85-9 Isothiazole-5-carboxylic acid 5200404, aisothiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Grimm, Erich L.; Ducharme, Yves; Frenette, Richard; Friesen, Richard; Gagnon, Marc; Juteau, Helene; Laliberte, Sebastien; MacKay, Bruce; Gareau, Yves; US2008/188521; (2008); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

Name is Isothiazole-5-carboxylic acid, as a common heterocyclic compound, it belongs to isothiazole compound, and cas is 10271-85-9, its synthesis route is as follows.,10271-85-9

Example-118; A solution of compound 117 (0.35 g, 2.67 mmol), diphenylphosphoryl azide (0.57 mL, 2.67 mmol) and triethylamine (0.37 mL, 2.67 mmol) in tert-butanol (10 mL) was heated at reflux for 5 hours, at which time thin layer chromatography (DCM/Hexanes) indicates the reaction is complete. The reaction mixture was cooled to room temperature, poured into water and extracted with diethyl ether (3¡Á). The combined ether extracts were washed with brine, dried over sodium sulfate, and concentrated to afford a beige solid. Purification by column chromatography (SiO2, 40% ethyl acetate/hexanes) afforded compound 121 as a white solid 0.245 g (46%). 1H-NMR (400 MHz, DMSO-d6) delta 8.15(d, 1H), 6.72 (d, 1H), 1.48 (s, 9H).

With the complex challenges of chemical substances, we look forward to future research findings about Isothiazole-5-carboxylic acid

Reference£º
Patent; Schering Corporation; US2007/117804; (2007); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belongs to quinuclidine compound,Quinuclidine-4-carboxylic acid hydrochloride,40117-63-3,Molecular formula: C8H14ClNO154,mainly used in chemical industry, its synthesis route is as follows.,936-16-3

Example 87 2-[{1-(tert-butyl)-5-phenyl-1H-pyrazol-3-yl}methyl]-2,3-dihydro[d]isothiazole 1,1-dioxide (Compound 32) To a solution of N,N-dimethylformamide (0.9 mL) in 1,2-benzisothiazoline-1,1-dioxide (10.6 mg, 0.063 mmol) was added potassium carbonate (83.9 mg, 0.607 mmol) at room temperature, followed by stirring for 10 min. This solution was slowly added with drops of {1-(tert-butyl)-5-phenyl-1H-pyrazol-3-yl}methyl bromide (18.7 mg, 0.064 mmol) in methylene chloride (3 mL), and stirred for a day at room temperature. When the reaction was completed as measured by TLC (Hexane:EtOAc=4:1), the reaction mixture was filtered through celite. The filtrate was neutralized with 1M HCl and an aqueous saturate sodium hydrogen carbonate solution. After extraction with ethyl acetate and water, the organic layer thus formed was dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The concentrate was purified by column chromatography (Hexane:EtOAc=6:1?2:1) to afford compound 23 (9.50 mg, 40percent, white solid).

With the complex challenges of chemical substances, we look forward to future research findings about 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,belong isothiazole compound

Reference£º
Patent; KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY; NAM, Ghil Soo; CHOI, Kyung Il; KIM, Jung Hyun; PAE, Ae Nim; HONG, Jin Ri; LEE, Jae Kyun; (30 pag.)US2015/329533; (2015); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

27148-03-4, Benzo[d]isothiazole-3(2H)-thione 1,1-dioxide is a isothiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A Zn(NO3)2*6H2O dissolution (10.3 mg, 0.0346 mmol/2 ml ethanol:water 1:1) was added to another dissolution of thiosaccharine (12.3 mg, 0.062 mmol/2 ml ethanol:water 1:1). Finally, solid 2,2′-biquinoline was added (9.4 mg, 0.0367 mmol/2 ml ethanol:water1:1). A pale yellow powder was then obtained. Yield: 90%. Molar conductivity (mS M1) = 26.3. Analytical percent composition calculated for C32H20N4O4S4Zn: C = 53.520%; H = 2.807%; N = 7.801%. Found: C = 53.884%; H = 2.761%; N = 7.698%. Soluble in DMSO and DMF. Almost insoluble in water, ethanol, methanol, acetone, dichloromethane and chloroform. [DMSO, kmaxnm]: 339 1H NMR (300 MHz, DMSO) d 8.80 (dd, 1H), 8.58 (dd, 1H), 8.19(dd, 1H), 8.08 (dd, 1H), 7.89-7.95 (m, 1H), 7.85 (td, 1H), 7.53-7.73 (m, 4H). 13C NMR (75 MHz, DMSO) d 191.54 (C1), 155.21(C16), 147.16 (C8), 137.80 (C7), 137.36 (C14), 136.32 (C2), 132.16 (C4), 130.99 (C5), 130.18 (C10), 129.31 (C12), 128.16 (C13), 128.03(C11), 127.42 (C9), 125.10 (C3), 119.05 (C6), 118.87 (C15)., 27148-03-4

As the paragraph descriping shows that 27148-03-4 is playing an increasingly important role.

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;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belong isothiazole compound,2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,936-16-3,Molecular formula: C7H7NO2S,mainly used in chemical industry, its synthesis route is as follows.,936-16-3

Step 2. To a solution of 8 (150 mg, 0.54 mmol) and 1 (92 mg, 0.54 mmol) in anhydrous DMF (4 mL) was added cesium carbonate (353 mg, 1.08 mmol), and the resulting mixture was stirred at 40¡ãC for 2 hours. Upon completion, the reaction mixture was poured into water (10 mL) and extracted with ethyl acetate (60 mL). The combined organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. Purification by prep-HPLC (0.04percentHCl/CH3CN/H2O system) resulted in Compound 77 (3.9 mg, 9.0percent) as a white solid. 1H NMR (DMSO-d6, 400MHz) delta 8.78 (d, 1H), 8.61 (d, 1H), 8.10-8.03 (m, 2H), 7.84 (d, 1H), 7.76-7.71 (m, 3H), 6.99 (s, 1H), 5.14 (s, 2H), 2.40 (s, 3H); LCMS (ESI): m/z 355.0 (M+H).

With the synthetic route has been constantly updated, we look forward to future research findings about 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,belong isothiazole compound

Reference£º
Patent; NUMERATE, INC.; RAIMUNDO, Brian; KOLTUN, Elena S.; GRIFFIN, John; STANGELAND, Eric; (93 pag.)WO2018/49324; (2018); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

Name is 4-Bromoisothiazole, as a common heterocyclic compound, it belongs to isothiazole compound, and cas is 24340-77-0, its synthesis route is as follows.,24340-77-0

General procedure: General Procedure E: Preparation of Coupled Aryl and Heteroaryl Groups Using Buchwald Catalyzed Coupling Conditions Between an Organohalide in the Presence of a Tin Reagent (0331) [00219] A solution of organobromide (1.0 equivalent), organochloride (1.0 equivalent), hexabutylditin (1.0 equivalent) and Pd(dppf)Cl2?DCM (10 mol%) in anhydrous 1,4-dioxane (10 mL/mmol) was stirred at 100 oC under N2 overnight, then cooled and quenched with water (20 mL/mmol). The resulting mixture was extracted with EtOAc (20 mL/mmol x 3), the organic phases were separated and dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo, and the resulting residue was purified by silica gel column (0332) chromatography or preparative-TLC to afford the coupled ring system.

With the complex challenges of chemical substances, we look forward to future research findings about 4-Bromoisothiazole

Reference£º
Patent; LYSOSOMAL THERAPEUTICS INC.; SKERLJ, Renato, T.; BOURQUE, Elyse Marie Josee; LANSBURY, Peter, T.; GREENLEE, William, J.; GOOD, Andrew, C.; (309 pag.)WO2017/176961; (2017); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com