Tag: M.W=0-100

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. category: Triazoles

n-BuLi (1.23 M in hexanes, 1.1 mL, 1.35 mmol) was added dropwise to a stirred slurry of 1-methyl-1,2,3-triazole (112 mg, 1.35 mmol) in THF (1 mL) at -40 C. under nitrogen. After stirring for another 30 minutes, the mixture was treated dropwise with a solution of (4-chloro-3-isopropoxy-2-methoxyquinolin-6-yl)(1,2-dimethyl-1H-imidazol-5-yl)methanone (252 mg, 0.67 mmol, Intermediate 27) in THF (5 mL). The reaction was allowed to warm to room temperature over 1 hour. The reaction was then quenched with saturated aqueous NH4Cl. The mixture was poured into a separatory funnel and extracted with DCM (4*60 mL). The organics were combined, washed with brine, dried (Na2SO4), filtered and concentrated to dryness to afford a light yellow oil. The crude material was purified by FCC (1-7.5% MeOH/DCM) followed by reverse-phase HPLC (acetonitrile/water+NH4OH) to provide the title compound as a white solid. 1H NMR (400 MHz, CDCl3) delta ppm 8.08 (d, J=2.2 Hz, 1H), 7.78 (d, J=8.7 Hz, 1H), 7.33 (dd, J=8.6, 2.2 Hz, 1H), 7.18 (s, 1H), 6.18 (s, 1H), 4.74-4.67 (m, 1H), 4.32 (s, 1H), 4.13 (s, 3H), 3.94 (s, 3H), 3.39 (s, 3H), 2.32 (s, 3H), 1.39 (d, J=6.2 Hz, 6H). MS (ESI): mass calcd. for C22H25ClN6O3, 456.2. m/z found, 457.0 [M+H]+. [4-Chloro-2-methoxy-3-(1-methylethoxyl)quinolin-6-yl](1,2-dimethyl-1H-imidazol-5-yl)(1-methyl-1H-1,2,3-triazol-5-yl)methanol was purified by chiral SFC (Stationary phase: CHIRALPAK AD-H 5 muM 250*20 mm, Mobile phase: 70% CO2, 30% MeOH/iPrOH 50/50 v/v+(0.3% iPrNH2)) to give 2 enantiomers. The first eluting enantiomer was Example 80b: 1H NMR (400 MHz, CDCl3) delta ppm 8.09 (d, J=2.2 Hz, 1H), 7.77 (d, J=8.7 Hz, 1H), 7.32 (dd, J=8.7, 2.2 Hz, 1H), 7.17 (s, 1H), 6.17 (s, 1H), 4.75-4.66 (m, 1H), 4.36 (s, 1H), 4.13 (s, 3H), 3.94 (s, 3H), 3.39 (s, 3H), 2.32 (s, 3H), 1.39 (d, J=6.2 Hz, 6H). MS (ESI): mass calcd. for C22H25ClN6O3, 456.2. m/z found, 457.2 [M+H]+ and the second eluting enantiomer was Example 80c: 1H NMR (400 MHz, CDCl3) delta ppm 8.06 (d, J=2.2 Hz, 1H), 7.80 (d, J=8.7 Hz, 1H), 7.35-7.32 (m, 1H), 7.21 (s, 1H), 6.24 (s, 1H), 4.74-4.67 (m, 1H), 4.13 (s, 3H), 3.95 (s, 3H), 3.52 (s, 1H), 3.42 (s, 3H), 2.37 (s, 3H), 1.39 (d, J=6.2 Hz, 6H). MS (ESI): mass calcd. for C22H25ClN6O3, 456.2. m/z found, 457.2 [M+H]+.

In conclusion, we affirm that quantitative kinetic descriptions of catalytic behavior continue to serve as an indispensable tool to navigate research efforts intended to model. Read on for other articles about 16681-65-5.

Reference:
Patent; JOHNSON & JOHNSON; LEONARD, KRISTI A.; BARBAY, KENT; EDWARDS, JAMES P.; KREUTTER, KEVIN D.; KUMMER, DAVID A.; MAHAROOF, UMAR; NISHIMURA, RACHEL; URBANSKI, MAUD; VENKATESAN, HARIHARAN; WANG, AIHUA; WOLIN, RONALD L.; WOODS, CRAIG R.; FOURIE, ANNE; XUE, XIAOHUA; CUMMINGS, MAXWELL D.; MCCLURE, KELLY; TANIS, VIRGINIA; US2015/111870; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 930-33-6, name is 1H-1,2,4-Triazol-3(2H)-one belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 930-33-6

509 g (28.28 mol) of water are added to a solution of the obtained OTA (in 98% sulfuric acid) with stirring and then 213 g (3.38 mol) of concentrated nitric acid (98% by weight commercial nitric acid) are added.After the introduction of nitric acid, the medium was brought to 65 DEG C and stirred at this temperature for 2 hoursSamples are taken to monitor the progress of the nitration (when the temperature of the reaction medium reaches 65 ). The sample is analyzed after external calibration (using commercial ONTA). The results are shown in Fig. Can be obtained at a very high yield.The following procedure was carried out for the recovery of the prepared ONTA.The reaction medium is cooled to 10 C (at the expiry of 2 hours). Subsequently, an amount of 293 g (16.28 mol) of water is added while maintaining the temperature at 10 . The crystallized ONTA is then filtered off and then pull-dried on a Buchner filter.The weight of the recovered wetted ONTA is 403 g.HPLC analysis (of the recovered ONTA) shows that after external calibration (by commercial ONTA), a yield of 96% of the wet product (for the starting ATA) can be achieved.

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 1H-1,2,4-Triazol-3(2H)-one ,and how the biochemistry of the body works.

Reference:
Patent; Hercules; Yurenko; Herve, Gregoire; Jacob, Gi; Kanyong, Gi; Busay, Jang Marque; (13 pag.)KR2016/28405; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 16681-65-5, New Advances in Chemical Research in 2021.Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole, molecular formula is C3H5N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Intermediate 84 (4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(2,6-dimethylpyridin-3-yl)(1-methyl-1H-1,2,3-triazol-5-yl)methanol To a flask containing 1 -methyl- lH-l ,2,3-triazole (275 mg, 3.31 mmol, prepared according to PCX Int. Appl., 2008098104) was added THF (35 mL) and the colorless solution was cooled to – 50 C. Then, kappa-butyllithium (2.5 M in hexanes, 1 ,2 mL, 3.0 mmol) was added dropwise which afforded a dark reddish-brown viscous solution. The mixture was stirred between -20 to -10 C for 30 minutes, then a homogeneous THF solution of (4-chloro-2-methoxy-3-(4- (irifluQromethyl)benzy)quinoh (700 nig, 1.44 mmol in 4 mL THF, Intermediate 12: step f) was introduced at 0 C. The reaction mixture became a dark brown color and was allowed to warm gradually to room temperature. The mixture was stirred for 60 minutes at, room, temperature then quenched with aqueous NH4CI solution. The aqueous portion was extracted with EtOAc, 3 x 50 mL. The combined organics were washed with brine, dried over MgS04, filtered and concentrated to provide a brown oil. Chromatography on silica gel (1% MeOH-DCM increasing to 5% MeOH-DCM) provided the title compound as a light brown solid. Racemic (4~chloro-2-methoxy-3-(4~(trifluorometliyl)benzyl)quinohyl)rnethanol was separated into its individual enantiomers using the following conditions: Chiralcel OD, 20 uM (Diacel) using ethanol with 242 nM detection to give the first eluting enantiomer as Intermediate 84b and the second eluting enantiomer as Intermediate 84c.

The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.I hope my blog about 1-Methyl-1H-1,2,3-triazole is helpful to your research.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; LEONARD, Kristi A.; BARBAY, Kent; EDWARDS, James P.; KREUTTER, Kevin D.; KUMMER, David A.; MAHAROOF, Umar; NISHIMURA, Rachel; URBANSKI, Maud; VENKATESAN, Hariharan; WANG, Aihua; WOLIN, Ronald L.; WOODS, Craig R.; FOURIE, Anne; XUE, Xiaohua; CUMMINGS, Maxwell D.; JONES, William Moore; GOLDBERG, Steven; WO2015/57205; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 288-36-8, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 288-36-8, name is 1H-1,2,3-Triazole, 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.

EXAMPLE 1-C; 2-C2H-1.2.3-triazol-2-ylV5-methylbenzoic acid (1-5); A solution of 2-iodo-5-methylbenzoic acid (1-13, 4.0 g, 15.3 mmol) in DMF (10 mL) was treated with 1,2,3-triazole (2.1 g, 30.5 mmol), CsCO3 (9.95 g, 30.5 mmol), CuI (0.145 g, 0.76 mmol) and trans-N,N’-dimethylcyclohexane-l,2-diamine (0.43 g, 3.05 mmol). The mixture was heated at 120 0C for 10 min in a microwave reactor. The reaction was cooled to room temperature, diluted with water, and washed with EtOAc. The aqueous phase was acidified with IN HCl and extracted with EtOAc. The organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by gradient elution on SiO2 (0 to 10% MeOH in water with 0.1% AcOH) to give the faster eluting 2-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid U5_, followed by the undesired regioisomer isomer, l-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid (IzIA)- Data for M: 1HNMR (500 MHz, DMSO-d6) d 12.98 (br s , IH), 8.04 (s, 2H), 7.72-7.45 (m, 3H), 2.41 (s, 3H) ppm.

Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms.In my other articles, you can also check out more blogs about 1H-1,2,3-Triazole.

Reference:
Patent; MERCK & CO., INC.; WO2009/58238; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 27808-16-8, name is 4-Methyl-1H-1,2,3-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Computed Properties of C3H5N3

A mixture of 33(430 mg, 1.00 mmol), 4-methyl-1H-1,2,3-triazole (100 mg,1.20 mmol) and K2CO3 (208 mg, 1.50 mmol) in DMF (4 mL)was stirred at 80C for 2 h. The mixture was quenched withwater at r.t. and extracted with EtOAc. The organic layer wasseparated, washed with water and saturated aqueous NaCl,dried over anhydrous MgSO4 and concentrated in vacuo(508.7 mg). The residue was purified by using preparativeHPLC (column: L-Column2 ODS 20 mm ID×150 mm L;mobile phase A: 0.1% TFA in water; mobile phase B: 0.1%TFA in acetonitrile; flow rate: 20 mL/min). The first elutingfactions (tR1) were concentrated to dryness, and washed withsaturated aqueous NaHCO3, extracted with EtOAc. The organic layer was separated, washed with water and saturatedaqueous NaCl, dried over anhydrous MgSO4 and concentratedin vacuo. The residue (42.7 mg) was crystallized from hexane-ethyl acetate to give 17 (34.4 mg, 0.072 mmol, 7.2%) asa white solid. 1H-NMR (300 MHz, DMSO-d6) delta: 1.04 (3H, s),1.37 (3H, s), 2.44 (3H, s), 4.87 (1H, d, J=8.3 Hz), 5.39 (1H, s),7.23-7.34 (2H, m), 7.48-7.58 (2H, m), 7.93 (1H, d, J=7.5 Hz),8.55 (1H, s), 8.88 (1H, d, J=0.8 Hz), 9.07 (1H, d, J=8.3 Hz),9.50 (1H, d, J=7.5 Hz). MS (ESI/APCI) m/z 476.2 [M+H]+.HPLC purity: 99.4%. mp 260C.

If you are hungry for even more, make sure to check my other article about 27808-16-8, the application of this compound in the production field has become more and more popular.

Reference:
Article; Mikami, Satoshi; Kawasaki, Masanori; Ikeda, Shuhei; Negoro, Nobuyuki; Nakamura, Shinji; Nomura, Izumi; Ashizawa, Tomoko; Kokubo, Hironori; Hoffman, Isaac Dylan; Zou, Hua; Oki, Hideyuki; Uchiyama, Noriko; Hiura, Yuuto; Miyamoto, Maki; Itou, Yuuki; Nakashima, Masato; Iwashita, Hiroki; Taniguchi, Takahiko; Chemical and Pharmaceutical Bulletin; vol. 65; 11; (2017); p. 1058 – 1077;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 27808-16-8, New Advances in Chemical Research in 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 27808-16-8, name is 4-Methyl-1H-1,2,3-triazole, molecular formula is C3H5N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

4-Methyl-1 H-1 ,2,3-triazole (0.1 1 mL, 1 .85mmol) was added to a solution of 3-bromo-6- methylpyridine-2-carboxylic acid (200. mg, 0.930mmol) in 1 ,4-Dioxane (1 mL)/ Water (0.1 ml_), followed by Cul (8.86mg, 0.050mmol), (1 R,2R)-N 1 , N2-dimethylcyclohexane-1 ,2- diamine (26.34mg, 0.190mmol) and cesium carbonate (607.03mg, 1 .85mmol The mixture was stirred at 120 C for 5 h. Reaction mixture was cooled to room temperature and then water and MTBE were added. After vigorously stirring, the layers were separated and the aqueous one was acidified to pH 2 with HCI 6N. The acidic solution was concentrated and purified by RP on C18 column [H20 (0.1 % HCOOH)/Acetonitrile=60/40] affording 6-methyl-3-(4-methyltriazol-2-yl)pyridine-2- carboxylic acid (p64, 139 mg, y= 69% yield) as a white solid. MS (mlz): 219.2 [MH]+.

In the meantime we’ve collected together some recent articles in this area about 27808-16-8 to whet your appetite. Happy reading!

Reference:
Patent; CHRONOS THERAPEUTICS LIMITED; MICHELI, Fabrizio; CREMONESI, Susanna; SEMERARO, Teresa; TARSI, Luca; GIBSON, Karl Richard; (116 pag.)WO2019/81939; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 74205-82-6, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 74205-82-6, name is (1H-1,2,4-Triazol-1-yl)methanol, molecular formula is C3H5N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: To a solution of indolines 6 (1.0 mmol) dissolved in acid (1.0 ml) in an icebath was added (1H-1,2,4-triazol-1-yl)methanol 5 (ammount as given in Table 1). Themixture was then stirred under the temperature and time given in Table 1. After completion of the reaction (TLC), the reaction mixture was poured intoice water, and 20% NaOH solution was added slowly to adjust the pH to 9. The product was extracted with dichloromethane. After removal of the solvent, theresidue was chromatographed over silica gel using dichloromethane-methanol togive 7 (yield as given in Table 1). The analytical and spectroscopic data for 7b and 7c are given below

Future efforts will undeniably focus on the diversification of the new catalytic transformations. These may comprise an expansion of the substrate scope from aromatic and heteroaromatic compounds to other hydrocarbons. Keep reading other articles of 74205-82-6.

Reference:
Article; He, Yi; Li, Xiaolong; Li, Jue; Li, Xiaocen; Guo, Li; Hai, Li; Wu, Yong; Tetrahedron Letters; vol. 55; 29; (2014); p. 3938 – 3941;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 7170-01-6, New Advances in Chemical Research in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic,A common heterocyclic compound, 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole, molecular formula is C3H5N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: In a 10 mL round-bottomed flask, (2S,4R)-4-(2-chloro-4-fluorophenylsulfonyl)-N-(1- cyanocyclopropyl)- 1- (1- (trifluoromethyl)cyclopropanecarbonyl)pyffolidine-2-carboxamide (example 8b)) (400 mg, 788 imol, Eq: 1.00) was combined with DMA (5 mL) to give a colorless solution. 1H-1,2,4-triazole (111 mg, 1.58 mmol, Eq: 2.00) and cesium carbonate (513 mg, 1.58 mmol, Eq: 2.00) were added. The reaction mixture was heated to 80 C and stilTed for 3h. The reaction mixture was poured into water and extracted with EtOAc (2x). The organic layers were combined, washed with saturated aqueous NaHCO3 solution (lx),water (3x) and brine (lx). The organic layers were dried over Na2SO4 and concentrated in vacuo.The crude material was purified twice by flash chromatography (silica gel, 20g, DCM/MeOH 98/2, 19/1) and (silica gel, 20g, Heptan/AcOEt 1/2, 1/3, 1/4) to yield the title compound as a white foam (264 mg; 60%).: _Example 11 was obtained as a byproduct during the synthesis of example 10 as a white solid (34 mg; 7%).

Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms.In my other articles, you can also check out more blogs about 3-Methyl-1H-1,2,4-triazole.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; HAAP, Wolfgang; KUHN, Bernd; LUEBBERS, Thomas; PETERS, Jens-Uwe; (93 pag.)WO2017/144483; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 61-82-5, name is 1H-1,2,4-Triazol-5-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 61-82-5

A mixture of aldehyde (1 mmol), dimedone (1 mmol), 3-amino-1,2,4-triazole (1 mmol), and [C4(H-DABCO)2][HSO4]4 (16 mg) washeated in an oil bath (90 C) under solvent-free conditions. Aftercompletion of the reaction, as identified by TLC, using n-hexane:EtOAc (7:3) as the eluent, 10 mL of water was added and stirredfor 10 min. The catalyst was dissolved in water and the solid wasfiltered off and washed with warm EtOH, to obtain the pure targetmolecule.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1H-1,2,4-Triazol-5-amine help many people in the next few years.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 288-36-8, name is 1H-1,2,3-Triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Product Details of 288-36-8

In the reactor,Add 90% acetone (volume fraction) 400mL,Stirring,26.2 g of compound (01)Then 34.5 g of potassium carbonate powder was added,0.38 g copper iodide (CuI),1,2,3-triazole.External temperature was raised to 70 ,During the heating process, a large amount of gas is generated,The reaction was stirred at reflux for 5 hours.The reaction mixture was then distilled under reduced pressure at 40 C,When the reaction system is more viscous, add 45mL of water and continue to reduce the steam to distillate without acetone (no acetone in the gas phase). Distilled residue was added 300mL of water, 25% sulfuric acid was added dropwise at room temperature to adjust the pH to 1-2, a yellow suspension.Stir for 30 minutes, filter, and the solids are washed three times with water, 60 mL each. The resulting solid was dried to dryness at 70 C in vacuo,Have pale green solid 19.48g,Compound (1), purity 95.06%.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1H-1,2,3-Triazole help many people in the next few years.

Reference:
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; He Bifei; Liu Guangyuan; Fan Yuping; (6 pag.)CN104557744; (2017); B;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics