Category: 7411-23-6

Research speed reading in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C2HBr2N3

[0614j A mixture of 3,5-dibromo-1H-1,2,4-triazole (8-P) (11 g, 50 mmol) andEt3N (10 mL) in DCM (200 mL) at rt was added 2-(trimethylsilyl)ethoxymethyl chloride(SEMC1) (8.5 g, 50 mmol) in portions. Subsequently, the mixture was stirred for 30 mins atrt, then the volatiles were removed. Purification by column chromatography on silica gel(PE) afforded 8-Q as colorless oil (17 g, 96%). +ESI-MS: mlz 299.7 [M-57].

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 7411-23-6

Reference:
Patent; ALIOS BIOPHARMA, INC.; WANG, Guangyi; BEIGELMAN, Leonid; TRUONG, Anh; NAPOLITANO, Carmela; ANDREOTTI, Daniele; HE, Haiying; WO2014/31784; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 7411-23-6

In a 100 mL round bottomed flask, 3,5-dibromo-1H-1,2,4-triazole (lnt-1, 2.50 g, 11 mmol) was dissolved in DMF (32 mL) and the solution was cooled to 0-5 C (ice bath). Sodium hydride (55% dispersion in mineral oil, 577 mg, 13.2 mmol) was added in portions and the resulting mixture was stirred for 5 min at 0-5 C and for 15 min at room temperature. After that, ethyl methanesulfonate (2.74 g, 2.27 mL, 22 mmol) was added dropwise at room temperature. The resulting mixture was stirred for 1.5 h at 100 C, and 16 h at room temperature. After that, it was concentrated in vacuo, the residue was diluted with ethyl acetate (100 mL) and water (100 mL), the aqueous phase was extracted with ethyl acetate (3 x 100 mL). The combined organic layers were dried (sodium sulfate) and concentrated in vacuo, the residue was purified by column chromatography (silica gel, 70 g, eluting with ethyl acetate / n-heptane, gradient 0: 100 to 22:78 v/v) to yield the title compound as white solid (1.98 g, 70%). HPLC (method LCMS_fastgradient) tR = 0.88 min. 1H NMR (CDCl3, 300 MHz): delta 1.49 (t, J = 7.2 Hz, 3 H), 4.21 (q, J= 7.2 Hz, 2 H). MS (ES+) m/z 253.9, 255.9, 258.0 [M+H, 2 Br isotopes] .

If you are hungry for even more, make sure to check my other article about 7411-23-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BARTELS, Bjoern; BERCHTOLD, Stefan; GALLEY, Guido; GOERGLER, Annick; JAKOB-ROETNE, Roland; KRUMMENACHER, Daniela; LIMBERG, Anja; NEIDHART, Werner; RATNI, Hasane; REUTLINGER, Michael; RODRIGUEZ SARMIENTO, Rosa Maria; SCHNIDER, Christian; (309 pag.)WO2018/87018; (2018); 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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Computed Properties of C2HBr2N3

a) 3 ,5-Dibromo- 1 -ethyl- 1 H-[ 1 ,2,4]triazole 3,5-Dibromo-lH-l,2,4-triazole (2.5 g, 11.0 mmol, Eq: 1.00) was dissolved in dimethyl- formamide (31.8 ml) and sodium hydride (529 mg, 60% dispersion in mineral oil, 13.2 mmol, Eq: 1.2) was added slowly. Ethyl methanesulfonate (2.74 g, 2.27 ml, 22.0 mmol, Eq: 2) was added to the reaction and the mixture was heated in a microwave oven for 60 minutes at 100 C. The mixture was diluted with water and extracted 3x with ethyl acetate. The organic layer was dried over magnesium sulfate, filtered and the solvent was evaporated to give 3,5-dibromo-l-ethyl-lH- [l,2,4]triazole (2.54 g, 90.4%) as a white powder. MS: m/z= 255.9 (M+H+)

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 3,5-Dibromo-1H-1,2,4-triazole help many people in the next few years.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; FLOHR, Alexander; GROEBKE ZBINDEN, Katrin; KUHN, Bernd; LERNER, Christian; RUDOLPH, Markus; SCHAFFHAUSER, Herve; WO2013/178572; (2013); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C2HBr2N3

General procedure: 3,5-Dibromo-1,2,4-triazole (1; 658 mg, 2.9 mmol) or 3-chloro-1,2,4-triazole (300 mg, 2.9 mmol), o-quinone methide precursor 2 (2.9mmol), and K2CO3 (1.2 g, 8.7 mmol) were refluxed for 4 h in DMF (10mL). After completion of the reaction, the mixture was cooled, andpoured into H2O (30 mL). The precipitate formed was collected by filtration,washed with H2O, dried, and recrystallized.

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 7411-23-6

Reference:
Article; Osipov, Dmitry V.; Osyanin, Vitaly A.; Voskressensky, Leonid G.; Klimochkin, Yuri N.; Synthesis; vol. 49; 10; (2017); p. 2286 – 2296;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 7411-23-6, 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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: 3,5-Dibromo-1,2,4-triazole (1; 658 mg, 2.9 mmol) or 3-chloro-1,2,4-triazole (300 mg, 2.9 mmol), o-quinone methide precursor 2 (2.9mmol), and K2CO3 (1.2 g, 8.7 mmol) were refluxed for 4 h in DMF (10mL). After completion of the reaction, the mixture was cooled, andpoured into H2O (30 mL). The precipitate formed was collected by filtration,washed with H2O, dried, and recrystallized.

The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 3,5-Dibromo-1H-1,2,4-triazole, hurry up and to see.

Reference:
Article; Osipov, Dmitry V.; Osyanin, Vitaly A.; Voskressensky, Leonid G.; Klimochkin, Yuri N.; Synthesis; vol. 49; 10; (2017); p. 2286 – 2296;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 7411-23-6, New Advances in Chemical Research 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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Triazole 1, 85.0 g (0.38 mol), was dissolved in 500 mL of ethyl acetate, 2-3 drops of trifluoroacetic acid were added, the mixture was heated to 50 C, and 75.0 g (0.87 mol) of 3,4-dihydro-2H-pyran was added over a period of 2.5 h. The mixture was refluxed for 1 h with stirring and evaporated, and the residue was recrystallized from toluene. Yield 111.5 g (95 %), mp 116-117 C [15]. IR spectrum, nu,cm-1: 2951, 2901, 2869, 2361, 1448, 1418, 1364, 1310,1289, 1240, 1204, 1184, 1082, 1055, 1042, 1001, 982,939, 912, 880, 847, 820, 793, 700, 563. 1H NMR spectrum,delta, ppm: 1.43-1.60 m (2H), 1.61-1.79 m (1H),1.84-2.04 m (2H), 2.04-2.20 m (1H), 3.54-3.76 m(1H), 3.91 d.d (1H, 3J = 3.2, 2J = 8.7 Hz), 5.54 d.d (1H, 3J = 2.5, 9.2 Hz). 13C NMR spectrum, deltaC, ppm: 21.7(CH2), 24.7 (CH2), 28.7 (CH2), 67.3 (CH2O), 84.6(OCH), 132.0 (C3), 140.0 (C5). Mass spectrum, m/z(Irel, %): 86 (5.8), 85 (100), 67 (10.8), 57 (11.1), 55 (8.4), 43 (8.9), 41 (18.9), 39 (6.5), 29 (17.8), 27 (8.7).

I am very proud of our efforts over the past few months and hope to 3,5-Dibromo-1H-1,2,4-triazole help many people in the next few years.

Reference:
Article; Tolstyakov; Russian Journal of Organic Chemistry; vol. 54; 10; (2018); p. 1537 – 1547; Zh. Org. Khim.; vol. 54; 10; (2018); p. 1525 – 1534,10;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 7411-23-6, New Advances in Chemical Research in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

In a 250 mL round bottomed flask sodium hydride (60% dispersion in mineral oil) (132 mg, 3.31 mmol) was added to a colorless solution of 3,5-dibromo-1H-1,2,4-triazole (Int-1, 500 mg, 2.2 mmol) in DMF (10 ml). The resulting suspension was stirred at room temp during 30 min and trideuterio(iodo)methane (319 mg, 2.2 mmol) was added and the reaction was stirred at 40C over night.The reaction mixture was poured into 50 mL H20 and extracted with EtOAc (3 x 50 mL). The organic layers were washed with sat NaCl (3 x 50 mL), dried over MgSO4 and concentrated in vacuo. The title compound was isolated as an off-white solid (456 mg, 84.8 % yield). MS (ES+) m/z: 244.9 [(M+H)+].

The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 3,5-Dibromo-1H-1,2,4-triazole, hurry up and to see.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BARTELS, Bjoern; BERCHTOLD, Stefan; GALLEY, Guido; GOERGLER, Annick; JAKOB-ROETNE, Roland; KRUMMENACHER, Daniela; LIMBERG, Anja; NEIDHART, Werner; RATNI, Hasane; REUTLINGER, Michael; RODRIGUEZ SARMIENTO, Rosa Maria; SCHNIDER, Christian; (309 pag.)WO2018/87018; (2018); A1;,
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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C2HBr2N3

15.38 g (67.79 mmol) of 3,5-dibromo-1H-1,2,4-triazole, 24.80 g (203.38 mmol) of phenylboronic acid, 7.83 g (6.78 mmol) of tetrakis(triphenylphosphine)palladium(0), and 18.74 g (135.59 mmol) of potassium carbonate were added to a mixed solution including 170 mL of tetrahydrofuran and 70 mL of water and stirred under reflux. After the reaction was completed, the reaction product was cooled to room temperature, and an aqueous solution layer was removed therefrom by extraction. The resultant was filtered under reduced pressure through silica gel, and the filtrate was concentrated under reduced pressure. The product obtained therefrom was separated by silica gel column chromatography to obtain 9.20 g (yield of 61%) of Intermediate (A). (0267) LC-Mass (Calcd: 221.10 g/mol, Found: M+1=222 g/mol)

The synthetic route of 7411-23-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Samsung Electronics Co., Ltd.; Samsung SDI Co., Ltd.; KWON, Eunsuk; KIM, Sangmo; KIM, Jongsoo; SON, Jhunmo; JEON, Soonok; CHUNG, Yeonsook; JUNG, Yongsik; CHWAE, Jun; (150 pag.)US2019/334095; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 7411-23-6, A common heterocyclic compound, 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, 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 3,5-dibromo-1H-1,2,4-triazole (15.5 g, 0.068 mol) andNaHCO3 (6.8 g, 0.082 mol) in DMF (150 mL) was slowly treatedwith 1,2-dibromoethane (26.0 g, 0.137 mol). The mixture was stirredfor overnight at 55 C. Then, the reaction was quenched with water(20 mL) and extracted by EtOAc (60 mL × 2). The organic layer waswashed with brine (40 mL × 2), dried over Na2SO4 and concentrated invacuo. The residue was purified by silica gel column chromatographyto provide compound 20 as: White solid; m.p. 47-48 C; yield 15.5 g(68%); 1H NMR (400 MHz, CDCl3): delta 4.52 (t, J = 6.3 Hz, 2H), 3.72(t, J = 6.3 Hz, 2H); 13C NMR (125 MHz, CDCl3): delta 142.03, 131.66,51.96, 29.10; MS (EI) m/z: 331 (M+). HRMS (EI) m/z calcd forC4H4Br3N3(M+): 330.7955; found: 330.7960.

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; Zheng, Yazhou; Qian, Anran; Ling, Chenyu; Cao, Xufeng; Cui, Yongmei; Yang, Yushe; Journal of Chemical Research; vol. 41; 4; (2017); p. 241 – 245;,
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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 3,5-Dibromo-1H-1,2,4-triazole

2-(2-bromoethoxy)tetrahydro-2H-pyran (10.0 g, 7.23 ml, 47.8 mmol, Eq: 1.00) and DIPEA (6.18 g, 8.35 ml, 47.8 mmol, Eq: 1.00) were added to a suspension of 3,5-dibromo-lH- l,2,4-triazole (10.9 g, 47.8 mmol, Eq: 1.00) in MeCN (90 ml) and then stirred at 90 C for 20 hr. The reaction mixture was cooled to RT, and concentrated in vacuo. The residue was purified by flash column chromatography over silica gel (eluent: EtOAc/ heptane from 10/90 to 60/40) to yield 3, 5-dibromo-l-(2-tetrahydropyran-2-yloxyethyl)-l, 2, 4-triazole (12.08 g, 33.7 mmol, 70% yield) as a light yellow oil. MS (ES+) m/z 356.0 [(M+H)+],

The synthetic route of 7411-23-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; RATNI, Hasane; CARTER, Jennifer Louise; (54 pag.)WO2020/48904; (2020); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics