Tag: M.W:100-200

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 16681-70-2

[0875] lH-1,2,3-triazole-5-carboxylic acid (3.1 mg, 27f.tmol) was combined with HATU (1 0.4 mg, 27 flillOI) in DMF(0.5 mL), and stirred for 10 minutes. DIPEA (4.8 f.LL, 27Mmol) was added and the resulting mixture was stirred for 1minute. Compound 2 (12 mg, 27 f.tmol) dissolved in DMF (1mL) was combined with added DIPEA (14.4 f.LL, 82 flillOI)followed by addition of the activated acid solution. The resultingmixture was stirred for 30 minutes then purified by reversephase chromatography (0-100% EtOAc/hexanes to yieldCompound 3 (1 0 mg).

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 16681-70-2.

Reference:
Patent; THERAVANCE BIOPHARMA R&D IP, LLC; Fleury, Melissa; Beausoliel, Anne-Marie; Hughes, Adam D.; Long, Daniel D.; Wilton, Donna A.A.; US2015/210690; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 1001401-62-2, name is 2-(2H-1,2,3-Triazol-2-yl)benzoic acid, A new synthetic method of this compound is introduced below., name: 2-(2H-1,2,3-Triazol-2-yl)benzoic acid

A mixture of 2-(2H-1,2,3-triazol-2-yl)benzoic acid (50 mg, 0.26 mmol) in thionyl chloride (2 mL) was stirred at 80C for 1 h, cooled to RT and concentrated in vacuo. The residue was dissolved in DCM (10 mL) and added to a solution of the product from step 5 (66 mg, 0.26 mmol) in DCM (1 mL) and DIPEA (0.1 ml) at 0C. The resulting mixture was stirred at RT for 12 h, poured into water and extracted with EtOAc (50 mL x 3). The combined organic layers were washed with brine, dried over MgSO4, filtered and concentrated in vacuo. The crude product was purified by Prep-TLC (50% EtOAc in petroleum ether) to give the title compound as a white solid.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; MERCK SHARP & DOHME CORP.; LIVERTON, Nigel; BESHORE, Douglas C.; KUDUK, Scott D.; LUO, Yunfu; MENG, Na; YU, Tingting; WO2015/18027; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid, A new synthetic method of this compound is introduced below., SDS of cas: 16681-70-2

K. (2S,4R)-5-Biphenyl-4-yl-2-hydroxymethyl-2-methyl-4-[(3H-[1,2,3]triazole-4-carbonyl)-amino]-pentanoic acid propyl ester (R4=H; R7=-(CH2)2CH3) (2S,4R)-4-Amino-5-biphenyl-4-yl-2-hydroxymethyl-2-methyl-pentanoic acid (76 mg, 242 mumol) in MeCN (0.4 mL, 8 mmol) and 4 M HCl in 1,4-dioxane (242 muL, 969 mumol) was combined with propan-1-ol (0.5 mL) at 60 C. The resulting mixture was stirred until solid precipitation was observed (~30 minutes). The solvent was evaporated under vacuum and the solids were azeotroped in toluene and dried under vacuum. 1,2,3-Triazole-4-carboxylic acid (0.0274 g, 0.242 mmol), DIPEA (169 muL, 969 mumol) and HATU (92 mg, 242 mumol) were combined in DMF (0.2 mL) and stirred for 5 minutes at room temperature. This was then combined with the dried solids, predissolved in DMF (0.2 mL) and DIPEA (0.5 eq.). The resulting mixture was stirred for 15 minutes and the reaction was quenched with AcOH. The product was purified by preparative HPLC and lyophilized to yield the title compound (24 mg; purity 95%). MS m/z [M+H]+ calc’d for C25H30N4O4, 451.23. found 451.4.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; THERAVANCE, INC.; US2012/213806; (2012); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 1001401-62-2, 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. 1001401-62-2, name is 2-(2H-1,2,3-Triazol-2-yl)benzoic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below.

A solution of 2-(2H-l,2,3-triazol-2-yl)benzoic acid (500 mg, 2.64 mmol) in SOCI2 (5 mL) was heated to reflux for 1 hour. After cooling to RT, the mixture was concentrated in vacuo to give a residue. To a solution of ((3R,6R)-6-methylpiperidin-3- yl)methanol hydrochloride (437 mg, 2.65 mmol) in toluene (5 mL) was added 1 N NaOH (5.3 mL), followed by a solution of the reaction residue in toluene (5 mL) dropwise. The resulting mixture was stirred at 10C for 12 h, then poured into water (5 mL) and extracted with EtOAc (5 mL x 3). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (20-50 % EtOAc in petroleum ether) to afford the title compound as a solid. LRMS m/z (M+H) 301.1 found, 301.2 required.

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, 2-(2H-1,2,3-Triazol-2-yl)benzoic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; MERCK SHARP & DOHME CORP.; LIVERTON, Nigel; KUDUK, Scott, D.; LUO, Yunfu; MENG, Na; YU, Tingting; (83 pag.)WO2016/69510; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 3179-31-5, name is 1H-1,2,4-Triazole-3-thiol, A new synthetic method of this compound is introduced below., Recommanded Product: 3179-31-5

Preparation 116; 2- (Thiazolo [3,2-b] [1, 2,4] triazol-6-yl) acetamide; Methyl 3-oxo-4- ( (rl, 2, 41iazol-3-yl) sulfanyl) butyrate; Add dropwise potassium tert-butoxide (11.4 g, 101. 8 mmol) in 30 ml N, N- dimethylformamide (30 ml) to a solution of [1, 2,4] triazole-3-thiol (10.3 gm, 101.8 mmol) in N, N-dimethylformamide (50 ml). Add dropwise methyl 4-chloroacetoacetate (15.3 gm, 101.8 mmol) in N, N-dimethylformamide (15 ml) and stir for 3 hours. Concentrate under reduced pressure, dilute with ethyl acetate (500 ml), filter, and concentrate under reduced pressure. Subject the residue to silica gel chromatography to provide the desired compound (18.3 gm, 83%) as a yellow oil. HRMS: m/z = 216.0443 (M++1)

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; ELI LILLY AND COMPANY; WO2003/76442; (2003); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 4928-87-4, A common heterocyclic compound, 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid, molecular formula is C3H3N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

A mixture of (S)-4-(aminomethyl)-N-(4-chloro-2-(2-methyl-4-(3,3,3-trifluoropropyl)piperazin- l-yl)phenyl)-2,3-difluorobenzamide (0.08 g, 0.16 mmol), l/ -l ,2,4-triazole-3-carboxylic acid (0.10 g, 0.88 mmol) and DIPEA (0.2 mL, 1.1 mmol) in CH3CN (2.5 mL) was stirred at room temperature for 10 min, then HATU (0.08 g, 0.21 mmol) was added. And then the mixture was stirred at room temperature for 12 h and was purified by HPLC to give the title compound (0.033 g, 34.6%). LC/MS m/z = 586.1 [M+l]+.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; ARENA PHARMACEUTICALS, INC.; TRAN, Thuy-Anh; KRAMER, Bryan Aubrey; SHIN, Young-Jun; WO2014/182688; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 162848-16-0, name is 4-[1,2,4]Triazol-1-yl-benzoic acid, A new synthetic method of this compound is introduced below., Safety of 4-[1,2,4]Triazol-1-yl-benzoic acid

A mixture of MIICl2 (0.25mmol) (M=Zn(1), Cd(2)), ligand Hcpt (0.5mmol), and DMF (10mL) was heated at room temperature to 150C for three days in a 25mL Teflonlined stainless-steel autoclave and was then cooled to room temperature at 5C/h-1 to obtain corresponding colorless block crystals 1-2 (yield: 53% for 1 and 49% for 2 based on MII). Anal.Calcd for 1 C18H12N6O4Zn (441.71): C, 48.90; H, 2.72; N, 19.02%. Found: C, 48.86; H, 2.75; N, 19.07%. IR frequencies (KBr, cm-1): 3443 (w), 3131 (w), 1682 (s), 1608 (s), 1568 (m), 1542 (m), 1504 (m), 1492 (m), 1462 (w), 1427 (w), 1384 (s), 1297 (s), 1219 (m), 1142 (s), 1045 (s), 1068 (m), 1002 (w), 975 (m), 955 (m), 860 (m), 809 (w), 771 (m), 690 (w), 670 (m), 638 (w), 559 (w), 538 (w), 516 (w). Anal.Calcd for 2 C24H26O6N8Cd (634.94): C, 45.36; H, 4.09; N, 17.64%. Found: C, 45.35; H, 4.11; N, 17.69%. IR frequencies (KBr, cm-1): 3425(mb), 2918(w), 1683(m), 1650(m), 1607(s), 1523(s), 1476(m), 1412(m), 1385(s), 1265(s), 1203(m), 1181(w), 1062(w), 858(m), 784(m), 722(w), 653(w), 619(w), 535(w), 524(w).

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Article; Li, Teng; Liu, Xiang; Huang, Zhuang-Peng; Lin, Qiang; Lin, Chu-Ling; Zhan, Qing-Guang; Xu, Xiang-Dong; Cai, Yue-Peng; Inorganic Chemistry Communications; vol. 39; (2014); p. 70 – 74;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 40253-47-2, These common heterocyclic compound, 40253-47-2, name is Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

A solution of ethyl 3 -methyl- 1H- 1 ,2,4-triazole-5-carboxylate in anhydrous DMF was treated with sodium hydride (60 wtpercent in mineral oil, 1.2 equiv.) and stirred for 10 min. 2- Fluorobenzyl bromide (1.2 equiv.) was added. After 16 hours, water was added and the aqueous phase was extracted with ethyl acetate. The combined organic phases were washed with water and brine, dried over sodium sulfate, filtered, and the solvent was removed in vacuo. Purification by silica gel chromatography (10-50percent ethyl acetate in hexanes gradient) yielded ethyl l-(2-fluorobenzyl)-5-methyl-lH-l,2,4-triazole-3-carboxylate (58percent) and ethyl 1 -(2-fluorobenzyl)-3-methyl- 1H- 1 ,2,4-triazole-5-carboxylate (23percent)

Statistics shows that Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate is playing an increasingly important role. we look forward to future research findings about 40253-47-2.

Reference:
Patent; IRONWOOD PHARMACEUTICALS, INC.; RENNIE, Glen Robert; PERL, Nicholas; MERMERIAN, Ara; JUNG, Joon; JIA, James; IYENGAR, Rajesh R.; IM, G-Yoon Jamie; BARDEN, Timothy Claude; SHEPPECK, James Edward; RENHOWE, Paul Allan; NAKAI, Takashi; LEE, Thomas Wai-Ho; IYER, Karthik; (346 pag.)WO2016/44446; (2016); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 135242-93-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 135242-93-2 name is (1-Methyl-1H-[1,2,4]triazol-3-yl)methanol, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

To a mixture of (l-methyl-l/-/-l,2,4-triazol-3-yl)methanol (400 mg, 3.54 mmol) and iodobenzene diacetate (1.25 g, 3.89 mmol) in dichloromethane (10 mL) was added TEMPO ((2, 2,6,6- tetramethylpiperidin-l-yl)oxyl) (56 mg, 354 pmol). The mixture was stirred at 15-20C for 2h. The mixture was concentrated in vacuo. The residue was purified by silica gel chromatography (petroleum ethenethyl acetate = 1:2) to give l-methyl-l/-/-l,2,4-triazole-3-carbaldehyde (300 mg, 2.70 mmol, 76% yield). XH NMR (chloroform-d 400 MHz) d 10.01 (s, 1H), 8.19 (s, 1H), 4.06 (s, 3H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, (1-Methyl-1H-[1,2,4]triazol-3-yl)methanol, and friends who are interested can also refer to it.

Reference:
Patent; H. LUNDBECK A/S; KEHLER, Jan; JUHL, Karsten; MARIGO, Mauro; VITAL, Paulo, Jorge, Vieira; JESSING, Mikkel; LANGGARD, Morten; RASMUSSEN, Lars, Kyhn; CLEMENTSON, Carl, Martin, Sebastian; (278 pag.)WO2019/115567; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 3641-13-2,Some common heterocyclic compound, 3641-13-2, name is 5-Amino-4H-1,2,4-triazole-3-carboxylic acid, molecular formula is C3H4N4O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

Add 90 mL of anhydrous methanol to a 250 mL three-necked flask. Take 12.8 g (10 mmol) of 3-amino-1H-1,2,4-triazole-5carboxylic acid, Stir it in anhydrous methanol. Take 6mL of 50% fuming H2SO4 and slowly add it to the reaction solution. The temperature was raised to 85 C and refluxed for 12 h. Naturally cooled, rotary distillation to remove some methanol, Precipitation gave precipitation of methyl 3-amino-1H-1,2,4-triazole-5-carboxylate sulfate. Add 20 mL of distilled water to the precipitate, and adjust the pH to 5-6 with NaOH (5 mol¡¤L-1). Filtered to give a white precipitate. Wash 2-3 times with absolute ethanol, Drying gave methyl 3-amino-1H-1,2,4-triazole-5-carboxylate (yield: 73%).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Amino-4H-1,2,4-triazole-3-carboxylic acid, its application will become more common.

Reference:
Patent; China Engineering Physics Institute Chemical Materials Institute; Zhang Qi; Wang Tingwei; Chen Dong; Li Hongzhen; (10 pag.)CN109096215; (2018); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics