Tag: M.W:100-200

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. 3641-13-2, name is 5-Amino-4H-1,2,4-triazole-3-carboxylic acid, A new synthetic method of this compound is introduced below., Safety of 5-Amino-4H-1,2,4-triazole-3-carboxylic acid

General procedure: A mixture of benzil (0.01 mol), aldehydes (0.01 mol), 3-amino-1,2,4-triazole-5-carboxylic acid (0.01 mol), ammonium acetate (0.01 mol) and ceric ammonium nitrate (15 mol%) as a catalyst were refluxed in ethanol (15 mL) for about 3-4 h. The progress of the reaction was monitored by TLC. After completion of reaction, the mixture was cooled to room temperature. The solid formed was filtered and dried. The crude products were recrystallized by ethanol.

The synthetic route of 3641-13-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Nikalje, Anna Pratima G.; Ghodke, Mangesh S.; Kalam Khan, Firoz A.; Sangshetti, Jaiprakash N.; Chinese Chemical Letters; vol. 26; 1; (2015); p. 108 – 112;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 15988-11-1, name is 4-Phenyl-1,2,4-triazolidine-3,5-dione, This compound has unique chemical properties. The synthetic route is as follows., Formula: C8H7N3O2

General procedure: General procedure: A mixture of 4-phenylurazole (1, 1 mmol), aryl aldehyde (2, 1.1 mmol) or ketone (5, 1.1 mmol), 1,3-diketone (3, 1 mmol) and FeCl3 (16.2 mg, 10 mol%) in acetonitrile (2.5 mL) was stirred in preheated oil bath at reflux for a specified time as required to complete the reaction (see Table 2 and 3). After complete conversion, as indicated by TLC, the solvent was removed in vacuo and the residue was diluted with water and extracted with ethyl acetate (2¡Á10 mL). The combined organic layers were dried over anhydrous Na2SO4, concentrated in vacuo and purified by column chromatography on silica gel (Merck, 60-120 mesh, ethyl acetate:hexane, 4:6) to afford the pure triazolo[1,2-a]indazoletrione or spirotriazolo[1,2-a]indazoletetraonederivative.

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 15988-11-1.

Reference:
Article; Subba Reddy; Umadevi; Narasimhulu; Yadav; Chemistry Letters; vol. 42; 8; (2013); p. 927 – 929;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 16681-70-2 as follows. Application In Synthesis of 1H-[1,2,3]Triazole-4-carboxylic acid

A solution of Compound 1 (18.1 mg, 37 mumol) in HCl (185 muL, 740 mumol) was stirred at room temperature for 30 minutes. After this time, LCMS indicated that the boc group had been cleaved so the solution was concentrated in vacuo. A solution of 3H-[1,2,3]triazole-4-carboxylic acid (5.0 mg, 44 mumol) and HATU (17 mg, 44 mumol) in DMF (370 muL) was stirred at room temperature for 30 minutes. After this time, a solution of the crude amine in DMF (370 muL) was added, followed by DIPEA (19 muL, 111 mumol). The resulting mixture was stirred at room temperature for 1 hour, and then concentrated in vacuo. The crude residue was purified by preparative HPLC to yield 3 products with identical masses (2 of which are diastereomers): isomer a (3.5 mg; purity 97%), isomer b (1.2 mg; purity 100%), and isomer c (1.1 mg; purity 100%). MS m/z [M+H]+ calc’d for C24H23ClFN5O33, 484.15. found 484.2.

According to the analysis of related databases, 16681-70-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; THERAVANCE BIOPHARMA R&D IP, LLC; Fleury, Melissa; Beausoliel, Anne-Marie; Hughes, Adam D.; Long, Daniel D.; Wilton, Donna A.A.; US2015/209352; (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. 15988-11-1, name is 4-Phenyl-1,2,4-triazolidine-3,5-dione, A new synthetic method of this compound is introduced below., Safety of 4-Phenyl-1,2,4-triazolidine-3,5-dione

General procedure: Dimedone (0.14 g, 1 mmol), benzaldehyde (0.1 g, 1 mmol), and 4-phenylurazole (0.177 g, 1 mmol) were mixed with PEG-SO3H (0.6 g, 0.1 mmol) and the obtained mixture was stirred magnetically at 80 C for 40 min. After the completion of the reaction warm water (20 mL) was added and the mixture stirred for about 5 min. The insoluble crude product was filtered and recrystallized from EtOH/H2O 4:1 and the pure product was obtained (0.352 g, 91%). In order to recover the catalyst, the filtrate was dried under reduced pressure and recovered catalyst was washed with diethyl ether and reused after drying under reduced pressure. The equivalent procedure was used for the synthesis of triazolo[1,2-a]indazole-tetraones.

The synthetic route of 15988-11-1 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Hasaninejad, Alireza; Zare, Abdolkarim; Shekouhy, Mohsen; Tetrahedron; vol. 67; 2; (2011); p. 390 – 400;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 129027-65-2, 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. 129027-65-2, name is 1-(tert-Butyl)-1H-1,2,3-triazole-4-carbaldehyde, This compound has unique chemical properties. The synthetic route is as follows.

To a 250-mL round bottom flask was added a solution of 1-tert-butyl-1H-1,2,3-triazole-4-carbaldehyde (2.47 g, 16.1 mmol, 2.2 eq) in dichloroethane, followed by addition of propargyl amine (361 mg, 72 mmol, 1.0 eq). To this mixture sodium triacetoxyborohydride (3.8 g, 17.9 mmol, 2.5 eq) was added in one portion with vigorous stirring. The reaction mixture was stirred at room temperature for 40 h. 1N H2SO4 (86 mL) was added to the reaction, and the mixture was stirred for 15 min. The pH was adjusted to >10 by addition of potassium carbonate. The reaction mixture was diluted with water (100 mL) and extracted with dichloromethane (3¡Á300 mL). The organic layers were combined, dried over anhydrous MgSO4, and filtered. Solvent was removed and the residue was purified on column to afford the product as a white powder. 1H NMR complies with the reported value.

The chemical industry reduces the impact on the environment during synthesis 1-(tert-Butyl)-1H-1,2,3-triazole-4-carbaldehyde. I believe this compound will play a more active role in future production and life.

Reference:
Patent; UNIVERSITY OF PITTSBURGH – OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCACATION; Zeng, Dexing; (26 pag.)US2017/297008; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 6523-49-5, name is 4-(1,2,4-Triazol-1-yl)aniline, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 6523-49-5

Example 11Preparation of N-f2-U-?5′,2lS)-2-[-l-(‘5-chloropyrimidin-2-yl)piperidiri-4-yl]cycIopropyllethyl)-4- (IH-1.2,4-triazol- 1 -vnaniline.Step 1: fcrt-butyl [4-(lH-1,2,4-triazol-1-vDphenyl]carbamate.4-(lH-1,2,4-triazol-1-yl)aniline (250mg, 1.51mmol) and di-tert-butyl dicarbonate (409mg, 1.82mmol) were added in toluene (7.6mL). The reaction was heated to 70C for over the weekend. The reaction was cooled to room temperature, concentrated and purified by column chromatography through a 50 gram Biotage SNAP KP-Sil silica gel cartridge eluting with 50% ethyl acetate/hexanes to give the title compound as a white solid.LRMS calc: 260.29; obs: 160.92 (M-IOO).

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 6523-49-5.

Reference:
Patent; MERCK SHARP & DOHME CORP.; WOOD, Harold, B.; ADAMS, Alan, D.; SZEWCZYK, Jason, W.; ZHANG, Yong; YANG, Meng; WO2011/19538; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 16681-70-2, 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. 16681-70-2 name is 1H-[1,2,3]Triazole-4-carboxylic acid, 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.

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 (2S,4R)-4-amino-5-biphenyl-4-yl-2-hydroxymethyl-2-methyl-pentanoic acid oxetan-3-yl ester (89.5 mg, 242 mumol), 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 (17 mg; purity 95%). MS m/z [M+H]+ calc’d for C25H28N4O5, 465.21. found 465.4.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1H-[1,2,3]Triazole-4-carboxylic acid, and friends who are interested can also refer to it.

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

Reference of 16681-70-2, These common heterocyclic compound, 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid, 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.

[0841] lH-1,2,3-triazole-5-carboxylic acid (3.4 mg, 30f.tmol) and HATU (11.4 mg, 30 Imo’) were dissolved in DMF(0.5 mL) and stirred at room temperature. A solution of (2R,4 R )-4-amino-5 -( 5′ -chloro-2′-flu oro bipheny 1-4-yl )-2-(1-iso butyry loxy-ethoxycarbony amino )pentanoic acid benzy Iester (19 mg, 27 f.tmol) in DMF (0.5 mL) was added to thissolution, followed by DIPEA (14 f.LL, 82 f.tmol). The resultingsolution was stirred at room temperature for 90 minutes andthen concentrated in vacuo. The crude residue was purified bysilica gel chromatography (0-100% EtOAc:hexanes) to yieldCompound 1 (13 mg) as a clear oil.

The synthetic route of 16681-70-2 has been constantly updated, and we look forward to future research findings.

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

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 4928-87-4 as follows. name: 1,2,4-Triazole-3-carboxylic acid

To a reaction of 1/7-1, 2, 4-triazole-3 -carboxylic acid (226 mg, 2.0 mmol) and (2,3- dimethoxybenzyl)amine (0.31 mL, 2.1 mmol) in dry DMF (10 mL) was added 1- hydroxybenzotriazole monohydrate (337 mg, 2.2 mmol) and EDC (N-(3- Dimethylaminopropyl)-N’-ethylcarbodiimide) (422 mg, 2.2 mmol) followed by N- methylmorpholine (0.88 mL, 8.0 mmol via syringe). The mixture was stirred at room temperature under nitrogen and the solids were gradually dissolved. The contents were stirred at room temperature for 24 h, and then slowly diluted into ice cold water and extracted with DCM (2 x 50 mL). The DCM phase was washed with ice cold water (2 x 100 mL). The DCM phase was dried over anhydrous Na2S04, filtered and concentrated under reduced pressure and chromatographed on silica gel using EtOAc and Hexanes (9: 1) as eluents to get the desired amide 3 (104.9 mg, 20% yield) as a white solid. -NMEI (400 MHz, DMSO-de): <514.67 (br s, 1H), 8.94 (br s, 1H), 8.49 (br s, 1H), 7.03-6.99 (m, 1H), 6.99-6.94 (m, 1H), 6.85-6.82 (m, 1H), 4.48 (d, J= 6.4 Hz, 2H), 3.80 (s, 3H), 3.78 (s, 3H) ppm. MH+ = 233.2 m/z. According to the analysis of related databases, 4928-87-4, the application of this compound in the production field has become more and more popular. Reference:
Patent; THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE; NATIONAL JEWISH HEALTH; WEMPE, Michael Fitzpatrick; VAZQUEZ-TORRES, Andres; DAI, Shaodong; (72 pag.)WO2020/41556; (2020); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

162848-16-0, name is 4-[1,2,4]Triazol-1-yl-benzoic acid, belongs to Triazoles compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. SDS of cas: 162848-16-0

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 synthetic route of 162848-16-0 has been constantly updated, and we look forward to future research findings.

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