Month: October 2020

As a common heterocyclic compound, it belongs to thiazines compound, name is 2-(Trifluoromethyl)-10H-phenothiazine, and cas is 92-30-8, its synthesis route is as follows.

General procedure: In an air atmosphere, 2-phenylindole 1a (0.60 mmol), phenothiazine 2a (0.30 mmol),10mol% cuprous bromide and DMF (2mL) were added to the Schlenk reaction tube in sequence.In a constant temperature heating magnetic stirrer, the reaction was stirred at room temperature for 24 hours.After the reaction was completed, it was quenched with distilled water, extracted with ethyl acetate (3 ¡Á 20 mL), and the organic layers were combined.After drying over anhydrous sodium sulfate and spinning the organic phase, The crude product by column chromatography to give the pure product 3a (103.1 mg, 88%).

92-30-8, 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.,92-30-8 ,2-(Trifluoromethyl)-10H-phenothiazine, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; Henan Normal University; Zhao Peizheng; Wang Ke; Liu Jianming; Wang Zhixian; Shao Huibin; Yue Yuanyuan; (9 pag.)CN110407830; (2019); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

272437-84-0, 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-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid, cas is 272437-84-0,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

Preparation of (3-oxo-3,4-dihvdro-2H-benzori,41thiazine-6-carboxylic acid {trans-4-2-(6- methoxy-ri,51naphthyridin-3-yloxy)-ethyll-cvclohexyU)-amide: 3-Oxo-3,4-dihydro-2H-benzo[l,4]thiazine-6-carboxylic acid (59 mg, 0.25 mmol, 1.0 eq) is added at room temperature to a stirred solution of tralphar¡ã-4-[2-(6-methoxy- [l,5]naphthyridin-3-yloxy)-ethyl]-cyclohexylamine (80 mg, 0.25 mmol, 1.0 eq) inN,N- dimethylformamide (5 mL), followed by 1-hydroxybenzotriazole (37 mg, 0.28 mmol, 1.1 eq), N-(3-dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (56 mg, 0.29 mmol, 1.15 eq) and 7V,N-diisopropylethylamine (97 muL, 0.57 mmol, 2.25 eq). After 15 hours stirring at room temperature, solvent is evaporated and the residue is extracted with dichloromethane (3 x 10 mL) and water (10 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a crude product that is purified by preparative EtaPLC to afford (3-oxo-3,4-dihydro-2H-benzo[l,4]thiazine-6-carboxylic acid {trans-4-[2-(6- methoxy-[l,5]naphthyridin-3-yloxy)-ethyl]-cyclohexyl})-amide as a white lyophilizated powder (36 mg, 27% yield). 1H-NMR (400 MHz, DMSO-t/6) delta ppm: 10.64 (s, IH), 8.53 (d, J = 2.8 Hz, IH), 8.19 (dd, J = 0.7, 9.0 Hz, 2H), 7.62 (dd, J = 0.5, 2.5 Hz, IH), 7.37-7.46 (m, 3H), 7.07 (d, J = 9.0 Hz, IH), 4.24 (t, J = 6.6 Hz, 2H), 4.00 (s, 3H), 3.70-3.80 (m, IH), 3.50 (s, 2H), 1.80-1.90 (m, 4H), 1.70-1.80 (m, 2H), 1.45-1.55 (m, IH), 1.30-1.40 (m, 2H), 1.05-1.18 (m, 2H). MS m/z (+ESI): 493.4 [M+H]+.

The chemical industry reduces the impact on the environment during synthesis,272437-84-0,3-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; BASILEA PHARMACEUTICA AG; GAUCHER, Berangere; DANEL, Franck Hubert; ROUSSEL, Patrick; WO2010/84152; (2010); A1;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

3939-23-9, 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. 3-Bromo-10H-phenothiazine, cas is 3939-23-9,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

Step 2, 132 mmol of 9-BBN was dissolved in THF at 0 C, 44 mmol of 1-2, Stirring for 15min, warming to 35 degrees Celsius, reaction 3h, and then transferred to the mixture containing 5-1 66mmoltetrakis(triphenylphosphine)palladium 0.88 mmol, sodium carbonate 132 mmol in toluene: ethanol: water = 4: 1: 1, and the temperature was raised to reflux temperature reaction24h. The crude product was passed through a silica gel column to give the product 20 mmol, 5-2.

The chemical industry reduces the impact on the environment during synthesis,3939-23-9,3-Bromo-10H-phenothiazine,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; Changchun Hai Purunsi Technology Co., Ltd.; Sun Keyi; Cai Hui; (31 pag.)CN106946934; (2017); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

272437-84-0, 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-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid, cas is 272437-84-0,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

Preparation of 3-oxo-3,4-dihvdro-2H-benzori,41thiazine-6-carboxylic acid (l-[2-(6- methoxy-quinolin-3-ylsulfanyl)-ethyll-piperidin-4-vU -amide: 3-oxo-3,4-dihydro-2H-benzo[l,4]thiazine-6-carboxylic acid (21 mg, 0.09 mmol, 1.0 eq) is added at room temperature to a stirred solution of l-[2-(6-methoxy-quinolin-3-ylsulfanyl)- ethyl]-piperidin-4-ylamine (30 mg, 0.09 mmol, 1.0 eq) in N,N-dimethylformamide (3 mL), followed by 1-hydroxybenzotriazole (13 mg, 0.10 mmol, 1.1 eq), N-Q- dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (20 mg, 0.10 mmol, 1.15 eq) and N,N-diisopropylethylamine (35 muL, 0.20 mmol, 2.25 eq). After 15 hours stirring at room temperature, solvent is evaporated and the residue is extracted with dichloromethane (3 x 5 mL) and water (5 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a residue that is purified by preparative EtaPLC to afford 3-oxo-3,4- dihydro-2H-benzo[l,4]thiazine-6-carboxylic acid {l-[2-(6-methoxy-quinolin-3- ylsulfanyl)-ethyl]-piperidin-4-yl} -amide as a white solid (30 mg, 59% yield).1H-NMR (400 MHz, DMSO-t/6) delta ppm: 11.65 (s, IH), 8.65 (d, J = 2.5 Hz, IH), 8.20-8.25 (m, 2H), 7.88 (d, J = 8.8 Hz, IH), 7.30-7.45 (m, 5H), 3.93 (s, 3H), 3.75 (m, IH), 3.50 (s, 2H), 3.29 (t, J = 7.0 Hz, 2H), 2.95 (m, 2H), 2.66 (t, J = 7.0 Hz, 2H), 2.11 (m, 2H), 1.78 (m, 2H), 1.58 (m, 2H). MS m/z (+ESI): 509.3 [M+H]+.

The chemical industry reduces the impact on the environment during synthesis,272437-84-0,3-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; BASILEA PHARMACEUTICA AG; GAUCHER, Berangere; DANEL, Franck Hubert; ROUSSEL, Patrick; WO2010/84152; (2010); A1;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

3939-23-9, 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. 3-Bromo-10H-phenothiazine, cas is 3939-23-9,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

In a 250 ml three-necked flask, 0.01 mol of raw material A1, 0.012 mol of raw material B1, 150 ml of toluene were added under a nitrogen atmosphere, and the mixture was stirred and mixed.Then, 0.03 mol of sodium t-butoxide, 5 ¡Á 10 -5 mol of Pd 2 (dba) 3, 5 ¡Á 10 -5 mol of tri-tert-butylphosphine was added, and the mixture was heated to 105 C, and refluxed for 24 hours.The sampling point plate shows that no raw material A1 remains, the reaction is complete; it is naturally cooled to room temperature, filtered, and the filtrate is steamed to a non-fraction (-0.09 MPa, 85 C) under reduced pressure, and passed through a neutral silica gel column to obtain an intermediate B1.HPLC purity 99.2%, yield 75.2%;

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 3-Bromo-10H-phenothiazine, 3939-23-9

Reference£º
Patent; Jiangsu March Optoelectric Technology Co., Ltd.; Tang Dandan; Zhang Zhaochao; Li Chong; Zhang Xiaoqing; (44 pag.)CN108218853; (2018); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

272437-84-0, 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-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid, cas is 272437-84-0,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

3-Oxo-3,4-dihydro-2H-benzo[l,4]thiazine-6-carboxylic acid (31 mg, 0.14 mmol, 1.0 eq) is added at room temperature to a stirred solution of l-(6-methoxy-3,4-dihydro-2H-l-oxa-9-aza- phenanthrene-3-yl)-piperidin-4-ylamine (50 mg, 0.14 mmol, 1.0 eq) in N,N- dimethylformamide (3 mL), followed by 1-hydroxybenzotriazole (21 mg, 0.15 mmol, 1.1 eq), N-(3-dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (31 mg, 0.16 mmol, 1.15 eq) and NN-diisopropylethylamine (53 mu, 0.31 mmol, 2.25 eq). After 15 hours stirring at room temperature, solvent is evaporated and the residue is extracted with dichloromethane (3 x 10 mL) and water (10 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a crude product that is purified by preparative HPLC to afford 3-oxo-3,4- dihydro-2H-benzo[ 1 ,4]thiazine-6-carboxylic acid [ 1 -(6-methoxy-3 ,4-dihydro-2H- 1 -oxa-9- aza-phenanthrene-3-yl)-piperidin-4-yl] -amide as an off-white lyophilizated powder (24 mg, 33% yield). 1H-NMR (400 MHz, DMSO-dtf) delta ppm: 10.66 (br, 1H), 8.33 (s, 1H), 8.24 (d, J = 7.6 Hz, 1H), 7.81 (d, J = 9.0 Hz, 1H), 7.42 (m, 2H), 7.38 (m, 1H), 7.20 (m, 2H), 4.47 (d, J = 11.0 Hz, 1H), 4.02 (m, 1H), 3.93 (s, 3H), 3.78 (m, 1H), 3.50 (s, 2H), 3.20 (m, 1H), 3.08 (m, 2H), 3.00 (m, 2H), 2.42 (m, 2H), 1.81 (m, 2H), 1.58 (m, 2H).MS m/z (+ESI): 505.2 [M+H]+.

The chemical industry reduces the impact on the environment during synthesis,272437-84-0,3-Oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylic acid,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; BASILEA PHARMACEUTICA AG; GAUCHER, Berangere; DANEL, Franck, Hubert; TANG, XiaoHu; XIE, Tong; XU, Lin; WO2011/73378; (2011); A1;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

38642-74-9, 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. 2-Cyano-phenothiazine, cas is 38642-74-9,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

General procedure: In an air atmosphere, 2-phenylindole 1a (0.60 mmol), phenothiazine 2a (0.30 mmol),10mol% cuprous bromide and DMF (2mL) were added to the Schlenk reaction tube in sequence.In a constant temperature heating magnetic stirrer, the reaction was stirred at room temperature for 24 hours.After the reaction was completed, it was quenched with distilled water, extracted with ethyl acetate (3 ¡Á 20 mL), and the organic layers were combined.After drying over anhydrous sodium sulfate and spinning the organic phase, The crude product by column chromatography to give the pure product 3a (103.1 mg, 88%).

The chemical industry reduces the impact on the environment during synthesis,38642-74-9,2-Cyano-phenothiazine,I believe this compound will play a more active role in future production and life.

Reference£º
Patent; Henan Normal University; Zhao Peizheng; Wang Ke; Liu Jianming; Wang Zhixian; Shao Huibin; Yue Yuanyuan; (9 pag.)CN110407830; (2019); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

1771-18-2, 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-Methoxyphenothiazine, cas is 1771-18-2,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

EXAMPLE 5 Reaction of 5-methyl-2-pyrrolidinone, 2-methoxyphenothiazine and phosphorus oxychloride in 1,2-dichloroethane according to the procedure of Example 4 affords 2-METHOXY-10-[5-METHYL-1-(5-METHYL-1-PYRROLIN-2-YL)-2-PYRROLIN-2-YL]PHENOTHIAZINE HYDROCHLORIDE (8.6% yield), m.p. 236.5-238.5 C. (corr.), from ethanol-ether.

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 2-Methoxyphenothiazine, 1771-18-2

Reference£º
Patent; Mead Johnson & Company; US3946004; (1976); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

Methyl 4-hydroxy-2H-thieno[2,3-e][1,2]thiazine-3-carboxylate 1,1-dioxide, cas is 98827-44-2, it is a common heterocyclic compound, the thiazines compound, its synthesis route is as follows.

5.3 g of TNXK-3 and 20 ml of methanol were added to a reaction flask. Stir at room temperature. Separately add dimethyl sulfate 3.7 g methanol (5 ml) solution and 50% sodium hydroxide solution (5 ml). After the completion of the dropping, room temperature reaction 3 hours, cooling to 10 degrees, the water 50 ml dilution, use 10% hydrochloric acid to the PH is 3. Filtering, the filter cake after the water washing, drying, recrystallization with methanol, 60 degrees decompression drying, getting white solid 4.8 g, yield 86%.

98827-44-2, 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.,98827-44-2 ,Methyl 4-hydroxy-2H-thieno[2,3-e][1,2]thiazine-3-carboxylate 1,1-dioxide, other downstream synthetic routes, hurry up and to see

Reference£º
Patent; Jiangxi Yong Tong Technology Co., Ltd.; Liu Zhongchun; (13 pag.)CN107141308; (2017); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem

98827-44-2, 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. Methyl 4-hydroxy-2H-thieno[2,3-e][1,2]thiazine-3-carboxylate 1,1-dioxide, cas is 98827-44-2,the thiazines compound, it is a common compound, a new synthetic route is introduced below.

260 kg of 4-hydroxy-2H-thieno [2,3-e] -1,2-thiazine-3-carboxylic acid methyl ester 1,1-dioxide were dissolved in500kgDMF, add potassium carbonate 150kg, warmed to 140 C, and dropping 120kg of dimethyl carbonate, 2h drop end, after the dropwise addition, the reaction was continued for 5h, then add 140kg of potassium carbonate, dropping 300 kg of 2 – aminopyridine in dimethylformamide (DMF) (120kg 2-aminopyridine dissolved in 180 kg DMF), 2h addition was complete, the reaction was continued for 5h. After the reaction, cooling and filtering to remove potassium carbonate, the filtrate was recovered under reduced pressure most of the DMF, the residue was added mass concentration of 3% sodium hydroxide alkaline water, activated carbon bleaching, filtration, the filtrate was purified hydrochloric acid to pH = 3 -4, precipitated yellowish solid, centrifuged, the material was washed until neutral, dried, to give a yellow solid 276kg, yield 83%, product purity 99.85%.

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 Methyl 4-hydroxy-2H-thieno[2,3-e][1,2]thiazine-3-carboxylate 1,1-dioxide, 98827-44-2

Reference£º
Patent; Jiangsu Engineering Polytechnic College; Yan Bin; Feng Chengliang; Guo Liqiang; (5 pag.)CN106916169; (2017); A;,
Thiazine – an overview | ScienceDirect Topics
Thiazine | C4H5NS – PubChem