Tag: M.W:100-200

7716-66-7, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 3-Chlorobenzo[d]isothiazole, cas is 7716-66-7,the isothiazole compound, it is a common compound, a new synthetic route is introduced below.

Preparation 1 SYNTHESIS OF 3-PIPERAZIN-1-YLBENZO[D]ISOTHIAZOLE A mixture of anhydrous piperazine (2.75 g, 32 mmol) and 3-chlorobenzo[d]isothiazole (1.00 g, 5.80 mmol) were heated in a sealed tube in an oil bath at 125¡ã C. for 24 hours. The orange melt was then quenched with ice water and 50percent NaOH was added in one portion. The mixture was extracted with dichloromethane to get the crude product which was purified by recrystallization to afford the title compound as a pale yellow solid in 24percent yield (0.260 g). MS (ES+) m/z 220 (M+1).

The chemical industry reduces the impact on the environment during synthesis,7716-66-7,3-Chlorobenzo[d]isothiazole,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; XENON PHARMACEUTICALS INC.; US2008/125434; (2008); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belongs to isothiazole compound, name is Isothiazole-4-carboxylic acid, and cas is 822-82-2, its synthesis route is as follows.

To a solution of l-[4-[methyl(tetrahydropyran-4-yl)amino]-5-oxido-6,7-dihydro- thieno[3,2-d]pyrimidin-5-ium-2-yl]azetidin-3-ol (5.0 mg, 15 muiotatauiotaomicronIota) in DCE (0.2 mL) was added solutions of 4-isothiazolecarboxylic acid (3.6 mg in 0.2 mL DCE, 28 muiotatauiotaomicronIota), DMAP (3.4 mg in 0.1 mL DCE, 28 muiotatauiotaomicronIota) and EDAC (5.3 mg in 0.2 mL DCE, 28 muiotatauiotaomicronIota) . The mixture was shaken at 50 C for 1 hour before it was concentrated in vacuo. Prep HPLC purification (acidic) afforded the title compound. 1H NMR (DMSO-d6) delta: 9.81 (s, 1H), 9.00 (s, 1H), 5.53 – 5.44 (m, 1H), 4.93 – 4.79 (m, 1H), 4.48 (dd, J = 10.4, 6.7 Hz, 2H), 4.16 (dd, J = 10.7, 3.8 Hz, 2H), 4.01 – 3.93 (m, 2H), 3.53 – 3.45 (m, 1H), 3.43 – 3.37 (m, 2H), 3.25 – 3.20 (m, 1H), 3.19 (s, 3H), 3.10 – 2.97 (m, 2H), 1.92 – 1.79 (m, 2H), 1.69 – 1.54 (m, 2H).HPLC-Retention time (XE Metode 7 CM) : 1.88 minutes.Detected “M + l”-mass: 450.12.

822-82-2, 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.,822-82-2 ,Isothiazole-4-carboxylic acid, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; LEO PHARMA A/S; LARSEN, Jens; (110 pag.)WO2019/57806; (2019); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

10271-85-9, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Isothiazole-5-carboxylic acid, cas is 10271-85-9,the isothiazole compound, it is a common compound, a new synthetic route is introduced below.

To a stirred solution isothiazole-5-carboxylic acid 46 (1.75 g, 13.56 mmol) in CH2Cl2 (50 mL) under inert atmosphere were added N, O-dimethylhydroxylamine (1.45 g, 14.92 mmol), EDCI.HCl (2.85 g, 14.92 mmol), DMAP (1.66 g, 13.56 mmol) and N-methylmorpholine (4.1 mL, 40.69 mmol) at 0 oC, followed by warming to room temperature and stirring for 16 h. The reaction was monitored by TLC. After completion of the reaction, the reaction mixture was poured into ice-cold water, extracted with CH2Cl2. The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude. The crude was purified through silica gel column chromatography using 2% MeOH/ CH2Cl2 to afford compound 47 (1.2 g, 52%) as brown syrup. TLC: 5% MeOH/ CH2Cl2 (Rf: 0.2); 1H NMR (400 MHz, DMSO-d6): delta 8.64 (d, J = 1.8 Hz, 1H), 7.96 (d, J = 1.8 Hz, 1H), 3.82 (s, 3H), 3.33 (s, 3H); LCMS Calculated for C6H8N2O2S: 172.03; Observed: 173.1 (M+1)+.

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 reaction routes of Isothiazole-5-carboxylic acid, 10271-85-9

Reference£º
Patent; ASSEMBLY BIOSCIENCES, INC.; TURNER, William, W., Jr.; LI, Leping; HAYDAR, Simon, Nicolas; BURES, Mark, G.; RAI, Roopa; FRANCIS, Samson; ARNOLD, Lee, Daniel; (0 pag.)WO2018/160878; (2018); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

As a common heterocyclic compound, it belongs to isothiazole compound, name is Isothiazole-4-carboxylic acid, and cas is 822-82-2, its synthesis route is as follows.

A solution of isothiazole-4- carboxylic acid (1 g, 1.1 A mmol) in CH2Cl2 (15 niL) and DMF (0.060 mL, 0.774 mmol) was cooled to 0 0C, and oxalyl chloride (0.813 mL, 9.29 mmol) was added dropwise over 10 min. The reaction mixture was warmed to RT and stirred for 1 h. The resulting acid chloride solution was added to a cooled solution of N-methoxy-N-methyl-amine hydrochloride and K2CO3 (4.82 g, 34.8 mmol) in 10 mL water. The mixture was stirred at rt overnight and then extracted twice with EtOAc. The combined organic layers were washed with brine, dried over anhydrous Na2SO4, filtered, and concentrated to yield N-methoxy-iV-methyl-isothiazole^-carboxamide. 1H NMR (400 MHz, CDCl3): delta 9.25 (s, IH), 8.93 (s, IH), 3.66 (s, 3H), 3.36 (s, 3H).

822-82-2, 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.,822-82-2 ,Isothiazole-4-carboxylic acid, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; MERCK SHARP & DOHME CORP.; GUO, Liangqin; LIU, Jian; NARGUND, Ravi, P.; PASTERNAK, Alexander; YANG, Lihu; YE, Zhixiong; WO2010/51177; (2010); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

7716-66-7, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 3-Chlorobenzo[d]isothiazole, cas is 7716-66-7,the isothiazole compound, it is a common compound, a new synthetic route is introduced below.

EXAMPLE 1 3-(1-Piperazinyl)-1,2-benzisothiazole STR26 A mixture of 3-chloro-1,2-benzisothiazole (37.8 g., 0.235 mole) and piperazine (304.2 g., 3.53 mole) is heated under an argon atmosphere for a period of 20 hr. at 120 C. in a closed reactor. The reaction mixture is dissolved in 2 liters of water and the aqueous solution repeatedly extracted with methylene chloride. Extracts are combined, dried over magnesium sulfate and concentrated in vacuo. Residual material is taken up in ether, filtered and concentrated in vacuo to afford 24.4 g. (47%) of 3-(1-piperazinyl)-1,2-benzisothiazole free base as a viscous oil. A sample of the free base converted to the hydrochloride salt in ether with ethanolic hydrogen chloride and crytallized from methanol-ethanol affords analytically pure 3-(1-piperazinyl)-1,2-benzisothiazole hydrochloride, m.p. 280 C. (dec.). Anal. Calcd. for C11 H13 N3 S.HCl: C, 51.66; H, 5.52; N, 16.43. Found: C, 51.34; H, 5.46; N, 16.16.

The chemical industry reduces the impact on the environment during synthesis,7716-66-7,3-Chlorobenzo[d]isothiazole,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; Mead Johnson & Company; US4411901; (1983); A;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com

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

To a thf solution (20mL) of [Ru3(CO)12] (100mg, 0.16mmol) was added tsacH (63mg, 0.32mmol). The reaction mixture was heated to reflux for 4h, after which time the reaction mixture was then allowed to cool at room temperature. The solvent was removed under reduced pressure and the residue chromatographed by TLC on silica gel. Elution with n-hexane/CH2Cl2 (v/v, 1:1) developed four bands. The first band was unreacted [Ru3(CO)12] (14mg). The second band afforded [H2Ru3(CO)7(mu-N,S-tsac)(mu-C,N-C6H4CNSO2)(mu3-S)] (2) as orange crystals (24mg, 17%) after recrystallization from n-hexane/CH2Cl2 at 4C. The third band afforded two types of crystals (yellow and orange) after recrystallization from n-hexane/CH2Cl2 at 4C which were physically separated by hand. The orange crystals were characterized as [Ru2(CO)6(mu-N,S-tsac)2] (1) (7mg, 4%), while the yellow crystals were characterized as [Ru4(CO)12(mu-N,S-tsac)2(mu4-S)] (3) (10mg, 7%). The fourth band afforded [H2Ru5(CO)13(mu-N,S-tsac)(mu-C,N-C6H4CNSO2)(mu3-S)(mu4-S)] (4) (14mg, 11%) as orange crystals after recrystallization from n-hexane/CH2Cl2 at 4C. Data for 2: Anal. Calc. for C21H10N2O11Ru3S4: C, 28.10; H, 1.12; N, 3.12. Found: C, 28.32; H, 1.15, N, 3.14%. IR (nuCO, CH2Cl2): 2124vs, 2067vs, 2060sh, 2012s cm-1. 1H NMR (CDCl3): delta 8.29 (d, J 8.0Hz, 1H), 8.02 (m, 1H), 7.91 (t, J 7.2Hz, 1H), 7.85 (m, 1H), 7.82 (m, 1H), 7.78 (d, J 7.2Hz, 1H), 7.73 (m, 2H),-14.31 (d, J 0.8Hz, 1H),-16.14 (d, J 0.8Hz, 1H). Data for 3: Anal. Calc. for C26H8N2O16Ru4S5: C, 26.72; H, 0.69; N, 2.40. Found: C, 27.08; H, 0.74; N, 2.48%. IR (nuCO, CH2Cl2): 2124w, 2102s, 2087vs, 2066vs, 2021vs cm-1. 1H NMR (CD2Cl2): delta 8.06 (m, 1H), 7.99 (d, J 7.2Hz, 1H), 7.90-7.76 (m, 6H). Data for 4: Anal. Calc. for C27H10N2O17Ru5S5: C, 24.95; H, 0.78; N, 2.15. Found: C, 25.28; H, 0.85; N, 2.24%. IR (nuCO, CH2Cl2): 2124s, 2093s, 2066vs, 2041s, 2016s, 1958w cm-1. 1H NMR (CD2Cl2): aromatic region, major isomer, delta 8.13 (d, J 7.2Hz, 1H), 7.93-7.74 (m, 7H); hydride region, major isomer, delta-13.67 (d, J 2.0Hz, 1H),-15.55 (d, J 2.0Hz, 1H), minor isomer, delta-13.78 (d, J 2.0Hz, 1H),-16.07 (d, J 2.0Hz, 1H). Major/minor=21:1.

27148-03-4, 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.,27148-03-4 ,Benzo[d]isothiazole-3(2H)-thione 1,1-dioxide, other downstream synthetic routes, hurry up and to see

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

936-16-3, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide, cas is 936-16-3,the isothiazole compound, it is a common compound, a new synthetic route is introduced below.

2-[{1-(tert-Butyl)-5-(4-cyclohexylphenyl)-1H-pyrazol-3-yl}methyl]-2,3-dihydro[d]isothiazole 1,1-dioxide (Compound 36) (0327) To a solution of {1-(tert-butyl)-5-(4-cyclohexylphenyl)-1H-pyrazol-3-yl}methanol (101 mg, 0.323 mmol) in were added PPh3 (71.8 mg, 0.655 mmol), and CBr4 (217 mg, 0.655 mmol) at 0¡ã C., followed by stirring at the same temperature for one hour to give {1-(tert-butyl)-5-(4-cyclohexylphenyl)-1H-pyrazol-3-yl}methyl bromide. When the reaction was completed as measured by TLC (Hexane:EtOAc=2:1), drops of N,N-dimethylformamide (1.5 mL) in 1,2-benzisothiazoline-1,1-dioxide (57.1 mg, 0.388 mmol) were slowly added. (0328) At the same temperature, potassium carbonate (447 mg, 3.23 mmol) was added, and the resulting solution was stirred for a day. When the reaction was completed as measured by TLC (Hexane:EtOAc=2:1), water was added dropwise, after which extraction was carried out with ethyl acetate and brine. The organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The concentrate was purified by column chromatography (Hexane:EtOAc=4:1) to afford the title compound (55.4 mg, 31percent, white solid). (0329) M.P. 135.7-141.5¡ã C.; (0330) 1H NMR (300 MHz, CDCl3) delta 7.83 (d, J=7.5 Hz, 1H), 7.63-7.50 (m, 2H), 7.40 (d, J=7.5 Hz, 1H), 7.30-7.20 (m, 4H), 6.24 (s, 1H), 4.53 (s, 2H), 4.45 (s, 2H), 2.56 (brs, 1H), 1.92-1.77 (m, 5H), 1.48-1.27 (m, 14H); (0331) 13C NMR (75 MHz, CDCl3) delta 148.5, 144.3, 143.4, 135.4, 134.3, 132.5, 131.3, 130.3, 128.9, 126.2, 124.5, 121.4, 109.0, 61.1, 50.0, 44.3, 41.4, 34.4, 31.2, 26.9, 26.1

The chemical industry reduces the impact on the environment during synthesis,936-16-3,2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,I believe this compound will play a more active role in future production and life.

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

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

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).

10271-85-9, 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.,10271-85-9 ,Isothiazole-5-carboxylic acid, other downstream synthetic routes, hurry up and to see

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

936-16-3, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide, cas is 936-16-3,the isothiazole compound, it is a common compound, a new synthetic route is introduced below.

To a mixture of 2,6-dichloropyrazine (193 mg, 1.30 mmol) and 1 (200 mg, 1.18 mmol) in DMF (5 mL), was added Cs2CO3 (770 mg, 2.36 mmol). The resulting mixture was stirred at 100¡ãC for 5 hours. The mixture was cooled to 25¡ãC and poured into ice water. The aqueous phase was extracted with ethyl acetate (20 mL). The combined organic phase was washed with saturated brine (20 mL), dried with anhydrous Na2S04, filtered, and concentrated under reduced pressure. The residue was purified by TLC (petroleum ether/ethyl acetate = 2: 1) to afford 21 (220 mg, 60percent) as yellow solid.

The chemical industry reduces the impact on the environment during synthesis,936-16-3,2,3-Dihydrobenzo[d]isothiazole 1,1-dioxide,I believe this compound will play a more active role in future production and life.

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 belongs to isothiazole compound, name is 1,3-Dihydrobenzo[c]isothiazole 2,2-dioxide, and cas is 111248-89-6, its synthesis route is as follows.

f. 5-bromo-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide 1,3-Dihydro-benzo[c]isothiazole 2,2-dioxide (0.50 g, 3.14 mmol, 1.00 eq.) was solubilized in acetic acid (5 mL) at rt under nitrogen atmosphere. Bromine (0.45 g, 3.14 mmol, 1.00 eq.) in acetic acid (5 mL) was added dropwise over 5 minutes and the reaction mixture was stirred for 0.5 h. Potassium acetate (0.28 g, 3.14 mmol, 1.00 eq.) was added and the reaction mixture was concentrated to dryness. The residue was taken in 2% NaHCO3 solution and stirred for 10 minutes. This solution was acidified to pH 2 using conc. HCl (2.5 mL) and extracted with MTBE (50 mL). The MTBE layer was washed with water (50 mL), brine solution (25 mL), dried over Na2SO4 and concentrated to get the crude product as brown solid. The crude product was triturated with petroleum ether (10 mL), filtered to a light brown solid (HPLC purity app. 86%) which was further purified by column chromatography using 60-120 mesh silica gel, 15% ethyl acetate in petroleum ether as eluent to get a yellow solid (HPLC purity app. 90%). The resulting product was then triturated with ethanol (5 mL), filtered and dried to get the title compounds as light yellow solid (0.35 g, 47.7%, 94% purity).

111248-89-6, 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.,111248-89-6 ,1,3-Dihydrobenzo[c]isothiazole 2,2-dioxide, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; Merck Patent GmbH; Cancer Research Technology, Ltd.; SCHIEMANN, Kai; BLAGG, Julian; MALLINGER, Aurelie; RINK, Christian; SEJBERG, Jimmy; HONEY, Mark; (139 pag.)US2016/16951; (2016); A1;,
Isothiazole – Wikipedia
Isothiazole – ScienceDirect.com