Tag: M.W=0-100

Adding a certain compound to certain chemical reactions, such as: 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole, belongs to Triazoles compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 16681-65-5, 16681-65-5

To a flask containing 1-methyl-1H-1,2,3-triazole (250 mg, 3.01 mmol) was added THF (20 mL) and the solution was cooled to -45 C. using a CH3CN-CO2 bath. n-BuLi (2.5 M in hexanes, 1.2 mL, 3 mmol) was added dropwise which produced an opaque suspension. The suspension was stirred at -45 C. for 20 minutes, then a homogeneous solution of (4-chloro-3-isobutyl-2-methoxyquinolin-6-yl)(2,6-dimethylpyridin-3-yl)methanone (848 mg, 2.21 mmol, Intermediate 66: step d) in 3 mL THF was introduced at -45 C. After 10 minutes, the reaction vessel was placed in an ice-water bath. The reaction mixture was quenched after 40 minutes with aqueous NH4Cl solution. The aqueous portion was extracted with EtOAc (4*30 mL) and EtOAc:THF (1:1, 30 mL). The combined organics were washed with brine, dried over MgSO4, filtered and concentrated. Chromatography on silica gel (100% DCM increasing to 5% MeOH-DCM) provided the title compound as an off white amorphous solid. 1H NMR (500 MHz, CDCl3) delta ppm 8.07 (d, J=2.2 Hz, 1H), 7.78 (d, J=8.7 Hz, 1H), 7.32 (dd, J=8.7, 2.2 Hz, 1H), 6.99-6.88 (m, 3H), 4.24 (s, 1H), 4.09 (s, 3H), 3.92 (s, 3H), 2.80 (d, J=7.3 Hz, 2H), 2.53 (s, 3H), 2.36 (s, 3H), 2.08 (hept, J=6.8 Hz, 1H), 0.95 (dd, J=6.7, 1.5 Hz, 6H). MS (ESI): mass calcd. for C25H28ClN5O2, 465.2. m/z found 466.0 [M+H]+. The racemate was separated by chiral chromatography using: Chiralpack OD-H column, 80% heptane/20% ethanol, to give Example 133b as the first compound eluted from the chiral column and Example 133c as the second compound eluted from the chiral column.

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, 1-Methyl-1H-1,2,3-triazole, other downstream synthetic routes, hurry up and to see.

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

61-82-5,Some common heterocyclic compound, 61-82-5, name is 1H-1,2,4-Triazol-5-amine, molecular formula is C2H4N4, 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.

General procedure: 20 mg of gamma-Fe2O3Ph-PMO-NaHSO4 was added to a roundbottomflask containing an aromatic aldehyde (1 mmol), 3-amino-1,2,4-triazole 2 (1.0 mmol), b-diketones (dimedone 3, 1,3-cyclohexadione 4 or ethyl acetoacetate 5) (1.0 mmol) and stirredunder solvent-free conditions at 100 C in certain times. Meanwhile,the progress of the reactionwas indicated by TLC (n-hexane:ethyl acetate; 7:3). With completing the reaction, 3ml ethanol waspoured and the magnetic nanocomposite was separated in thepresence of a magnetic stirring bar; the reaction mixture becameclear. The crude product was recrystallized from ethanol to give thepure product. The pure products were characterized by conventionalspectroscopic methods. Physical and spectral data for theselected compounds are represented below.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 61-82-5, its application will become more common.

Reference:
Article; Haghighat, Mahdieh; Shirini, Farhad; Golshekan, Mostafa; Journal of Molecular Structure; vol. 1171; (2018); p. 168 – 178;,
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 584-13-4 as follows. 584-13-4

5-(4J-l,2,4-Triazol”4-ylamino)-4I-(beiizyIoxy)biphenyl-2-carbonitriIe (CAB06050)To a solution of 4/?-l,2,4-triazol-4-amine (2.439 g, 29.01 mmol) in DMSO (50 mL) was added KOtBu (336 g, 30.0 mmol). The mixture was stirred for 0.5 hours at room temperature before CAB06Theta48 (4.40 g, 14.51 mmol) was added and stirring was continued for 1 hour. The mixture was poured into crashed ice and neutralized with 2M BCHSO4 solution. The precipitate was filtered off and recrystallised from EtOAc/?-hexane to give CAB06050 (5.07 g, 85%) as fine colorless needles. Mp. 180-182 0C; 1H NMR (400 MHz, DMSO-rftf) delta 5.17 (s, 2H)5 6.47 (d, J = 2.4 Hz5 IH), 6.54 (dd, J = 8.6, 2.4 Hz, IH)5 7.15 (AA’BB’, 2H), 732-7.50 (m, 7H)5 7.78 (d, J= 8.6 Hz, IH), 8.86 (s, 2H), 10.28 (S5 IH); 13C NMR (100.6 MHz5 DMSO-rf*) delta 69.4, 101.2, 111.0, 1123, 115.0, 119.1, 127,8, 127.9, 128.5, 129.7, 130.2, 135.6, 136.8, 144.1, 146.0, 150.8, 158.9; LRMS (ES+): m/z 368,2 (100%, [M+H]+); HRMS (ES+) calcd for C22H18N5O [M+H]+: 368.1506, found 368.1494.

According to the analysis of related databases, 584-13-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; STERIX LIMITED; WOO, Lok Wai Lawrence; BUBERT, Christian; WOOD, Paul Michael; PUTEY, Aurelien; PUROHIT, Atul; POTTER, Barry Victor Lloyd; WO2011/23989; (2011); 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 7170-01-6 as follows. 7170-01-6

Example 93: Preparation of 4-(3-Methyl-lH-l,2,4-triazol-l-yl)benzaldehyde (DI53) To a stirring solution of 4-fluorobenzaldehyde (5.0 g, 40.32 mmol) in DMF (50 mL), were added K2C03 (3.34 g, 40.32 mmol) and 3-methyl-l,2,4-trizole (3.34 g, 40.32 mmol) and the resultant reaction mixture was stirred at RT for 4 h. After completion of the reaction (TLC), the reaction mixture was diluted with water and extracted with EtOAc (3x). The combined EtOAc layer was washed with water and brine then dried over Na2S04 and concentrated under reduced pressure to afforded the title compound as a white solid (4.1 g, 60%): mp 125-128C; ]H NMR (400 MHz, CDC13) delta 10.05 (s, IH), 8.76 (s, IH), 8.02 (d, 2H), 7.85 (d, 2H), 2.50 (s, 3H); ESIMS m/z 188.04 ([M+H]+).

According to the analysis of related databases, 7170-01-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; DOW AGROSCIENCES LLC; LO, William C.; HUNTER, James E.; WATSON, Gerald B.; PATNY, Akshay; IYER, Pravin S.; BORUWA, Joshodeep; WO2014/100163; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

7170-01-6, 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. 7170-01-6 name is 3-Methyl-1H-1,2,4-triazole, 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.

EXAMPLE 102 [2-Chloro-4-(3-methyl-1,2,4-triazol-1-yl)-phenyl](5H,11H-pyrrolo[2,1-c]-[1,4]benzodiazepin-10-yl)-methanone To a suspension of 60% sodium hydride in oil (0.3 g) in dimethylformamide (50 ml) was added dropwise 3-methyl-1,2,4-triazole (0.45 g). After hydrogen gas evolution ceased, 2-chloro-4-fluorophenyl-(5H,11H-pyrrolo[2,1-c][1,4]benzodiazepine-10-yl)-methanone (1.70 g) was added and the reaction mixture was heated in a sand bath at 110 C. for 18 hours. The mixture was poured onto ice, diluted with brine, and extracted with dichloromethane. The combined extracts were dried over anhydrous sodium sulfate and filtered through a short column of anhydrous sodium magnesium silicate. The solution was concentrated in vacuo and the residue was triturated with diethyl ether to give 1.25 g of the title compound as colorless crystals, m.p. 191-193 C., MS m/z: 404.1 (M+H)+.

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

Reference:
Patent; Wyeth; US6511974; (2003); B1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

A common heterocyclic compound, 61-82-5, name is 1H-1,2,4-Triazol-5-amine, molecular formula is C2H4N4, 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. 61-82-5.

General procedure: 20 mg of gamma-Fe2O3Ph-PMO-NaHSO4 was added to a roundbottomflask containing an aromatic aldehyde (1 mmol), 3-amino-1,2,4-triazole 2 (1.0 mmol), b-diketones (dimedone 3, 1,3-cyclohexadione 4 or ethyl acetoacetate 5) (1.0 mmol) and stirredunder solvent-free conditions at 100 C in certain times. Meanwhile,the progress of the reactionwas indicated by TLC (n-hexane:ethyl acetate; 7:3). With completing the reaction, 3ml ethanol waspoured and the magnetic nanocomposite was separated in thepresence of a magnetic stirring bar; the reaction mixture becameclear. The crude product was recrystallized from ethanol to give thepure product. The pure products were characterized by conventionalspectroscopic methods. Physical and spectral data for theselected compounds are represented below.

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

Reference:
Article; Haghighat, Mahdieh; Shirini, Farhad; Golshekan, Mostafa; Journal of Molecular Structure; vol. 1171; (2018); p. 168 – 178;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 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

General procedure: A mixture of 1,2,4-triazol-3-amine 1 (1 mmol), aromatic aldehydes2a-o (1 mmol) and 1,3-cyclohexanedione 3 (1 mmol) were taken into a RB flask, irradiated under MW at 150 W for 60 s. The progress ofthe reaction was observed by TLC. After cooling, the reaction mass becamegummy,washed thoroughlywith 1:1 hexane and ethyl ethanoateto afford the compounds 4a-o (Scheme 1).

The synthetic route of 61-82-5 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Sompalle, Rajesh; Arunachalam, Prabhakarn; Roopan, Selvaraj Mohana; Journal of Molecular Liquids; vol. 224; (2016); p. 1348 – 1357;,
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. 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole, A new synthetic method of this compound is introduced below., 16681-65-5

n-BuLi (1.23 M in hexanes, 447 muL, 0.55 mmol) was added dropwise to a stirred slurry of 1-methyl-1,2,3-triazole (46 mg, 0.55 mmol) in THF (1 mL) at -40 C. under nitrogen. After stirring for 30 minutes at -40 C., the mixture was treated dropwise with a solution of (2,4-dichloro-3-isopropoxyquinolin-6-yl)(1,2-dimethyl-1H-imidazol-5-yl)methanone (104 mg, 0.27 mmol, Intermediate 25) in THF (1 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 (2*25 mL). The organics were combined, washed with brine, dried (Na2SO4), filtered and concentrated to dryness to afford an orange-brown foam. The crude material was purified by FCC (1-7.5% MeOH/DCM) followed by reverse-phase HPLC (acetonitrile/water+0.05% TFA) to provide the title compound as a clear colorless oil. 1H NMR (500 MHz, CDCl3) delta ppm 8.23-8.20 (m, 1H), 7.98 (d, J=8.8 Hz, 1H), 7.52-7.48 (m, 1H), 7.24 (s, 1H), 6.40 (s, 1H), 4.80-4.73 (m, 1H), 3.92 (s, 3H), 3.63 (s, 3H), 2.58 (s, 3H), 1.44-1.41 (m, 6H). MS (ESI): mass calcd. for C21H22Cl2N6O2, 460.1. m/z found, 461.1 [M+H]+.

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; 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

7343-34-2, 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. 7343-34-2, name is 3,5-Dimethyl-4H-1,2,4-triazole belongs to Triazoles compound, it is a common compound, a new synthetic route is introduced below.

A mixture of Zn(NO3)2¡¤6H2O (60 mg, 0.2 mmol), HCOONa¡¤2H2O (14 mg, 0.1 mmol), Hdmtz(19 mg, 0.2 mmol), an aqueous dimethylamine solution (0.3 mmol, 33percent), and H2O (3 ml) was placed in a Teflon-linedstainless steel vessel (12 ml), heated at 120 ¡ãC for 72 h, and then cooled to room temperature at a rate of 5 ¡ãC/h. Colorlessblock crystals of 1 were collected by filtration, washed with water, and dried in air to afford 22 mg (62percent based on Zn) of theproduct. Anal. calcd. for C13H22N10O8Zn4 (percent): C 22.06, H 3.13, N 19.79. Found (percent): C 22.12, H 3.09, N, 19.82. IR(KBr, cm?1): 3476(m), 1612(s), 1527(m), 1451(m), 1385(m), 1340(m), 1129(w), 1036(w), 881(w), 772(w), 700(w), 546(m).

The synthetic route of 3,5-Dimethyl-4H-1,2,4-triazole has been constantly updated, and we look forward to future research findings.

Reference:
Article; Fang; Yang; Dou; Zhu; Xu; Journal of Structural Chemistry; vol. 59; 6; (2018); p. 1450 – 1455; Zh. Strukt. Kim.; vol. 59; 6; (2018); p. 1503 – 1507,5;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

A common heterocyclic compound, 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, 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. 288-36-8.

To a 20 ml microwave vial containing 2-bromo-4,5-dimethoxybenzoic acid (3 g, 1 1 .5 mmol), copper iodide (0.04 g, 0.5 mol%), cesium carbonate (7.5 g, 23 mmol), triazole (1 .33 mL, 23 mmol) and finally (R,R)-(-)-N,N’-dimethyl-1 ,2- cyclohexanediamine ligand (0.36 mL, 2.3 mmol) was added DMF (12 mL). The resulting clumpy yellow slurry was stirred until evenly dispersed then heated to 120C for 10-20 min using a microwave. At this point the reaction mixture appeared as a blue slurry which was then diluted with 20 mL ether and 20 mL H2O. The resulting solution was thoroughly stirred and transferred to a seperatory funnel then the RBF was subsequently rinsed with 20 mL ether and H2O each. The aqueous layer was separated from the organic layer and acidified to pH 1 with 6 mL cone. HCI. The now brown/ lime green aqueous layer was extracted twice with EtOAc. The bright yellow organic layers were combined and dried with Na2SO4 and then cone, into a yellow powder under reduced pressure which was purified by FCC (0-5% MeOH in DCM w/ 0.5% AcOH) to afford 2,3-dimethoxy-6-[1 ,2,3]triazol-2-yl-benzoic acid (60%) and 2,3- dimethoxy-6-[1 ,2,3]triazol-1 -yl-benzoic acid (20%). Data for 2,3-dimethoxy-6- [1 ,2,3]triazol-2-yl-benzoic acid, MS (ESI): mass calculated for CnHnN3O4, 249.23; m/z found 250.3 [M+H]+. 1H NMR (400 MHz, CD3OD): 7.87 (s, 2H), 7.47 (s, 1 H), 7.18 (s, 1 H), 3.94 (s, 3H), 3.91 (s, 3H).; Intermediate 80: 2,3-Dimethoxy-6-[1 , 2, 3]triazol-1 -yl-benzoic acid.The title compound was isolated from the procedure used to prepareIntermediate 79 with a 20% yield. MS (ESI): mass calculated for Cn Hn N3O , 249.23; m/z found 250.3 [M+H]+. 1H NMR (400 MHz, CD3OD): 8.17 (d, J = 1 .0 Hz, 1 H), 7.82 (d, J = 1 .0 Hz, 1 H), 7.62 (s, 1 H), 7.09 (s, 1 H), 3.95 (s, 3H), 3.91 (s, 3H).

The synthetic route of 1H-1,2,3-Triazole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50200; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics