Tag: M.W=100-200

Chemistry graduates have much scope to use their knowledge in a range of research sectors, including roles within chemical engineering, chemical and related industries, healthcare and more. , Formula: C10H7NO2

A 20-mL, microwave reaction vessel was charged with (3-bromopyridin-4-yl)-(4-(trifluoro methyl)phenyl)methanol (2.0 g, 6.02 mmol), 2-vinylisoindoline-1,3-dione (1.16 g, 6.68 mmol), 2-(dicyclohexylphosphino)biphenyl (0.211 g, 0.60 mmol), Pd(dba)2 (0.176 g, 0.30 mmol), NEt3 (1.0 mL, 7.23 mmol), and DMF. The mixture was purged with argon and heated in microwave synthesizer at 150 C. for 1 h. The reaction mixture was partitioned between water and EtOAc. The EtOAc layer was separated and aqueous layer was extracted again with EtOAc. The combined organic layers were washed with saturated NaHCO3, dried over Na2SO4, filtered, and concentrated in vacuo. The brown residue was triturated with DCM, the resulting precipitate was collected by filtration to afford the title compound as an ivory colored solid. 1H NMR (400 MHz, CDCl3): delta 8.70 (s, 1H), 8.58 (d, J= 5.1 Hz, 1H), 7.92-7.95 (m, 2H), 7.79-7.7.84 (m, 3H), 7.55-7.64 (m, 5H), 7.24 (s, 0.5H), 7.19 (s, 0.5H), 2.71 (d, J= 3.4 Hz, 1H).

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 3485-84-5.

Reference:
Patent; Nishimura, Nobuko; Norman, Mark H.; Tamayo, Nuria; Tang, Phi; Bo, Yunxin Y.; US2009/82358; (2009); A1;,
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While the job of a research scientist varies, most chemistry careers in research are based in laboratories, where research is conducted by teams following scientific methods and standards. , Formula: C8H8N2O

General procedure: Isoindolin-1-one (200 mg, 1.50mmol) was dissolved in super-dry DMSO (4 mL), and Cs2CO3 (1215 mg, 3.75 mmol), CuI (58 mg, 0.30mmol) and N1,N2-dimethylethane-1,2-diamine (27 mg, 33 muL, 0.30 mmol) were added to the solution.The resulting mixture was stirred at room temperature for 10 min, after which iodobenzene (2.25mmol) was added. Then the mixture was heated to 120 C. When TLC showed that isoindolin-1-onehad been fully converted, the reaction was stopped. The mixture was extracted with ethyl acetate (20mL) and H2O (10 mL). The water phase was re-extracted with ethyl acetate (20 mL). The organic layerwas combined and washed with brine (10 mL). Then the solution was dried over anhydrous MgSO4,filtered and concentrated, and the crude residue was purified by flash chromatography over silica gelusing CH2Cl2/CH3OH as the gradient elution to afford the title compounds.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 6-Amino-2,3-dihydro-1H-isoindol-1-one, and friends who are interested can also refer to it.

Reference:
Article; Wang, Yixuan; Wang, Huiqiang; Jiang, Xinbei; Jiang, Zhi; Guo, Tingting; Ji, Xingyue; Li, Yanping; Li, Yuhuan; Li, Zhuorong; Molecules; vol. 24; 5; (2019);,
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Safety of 5-Chloro-1-methylindoline-2,3-dione, 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 60434-13-1 as follows.

General procedure: To a mixture of isatin (1 equiv.) and phenyl acetylene (1.2 equiv.) in water (3 mL), CuWO4 (10 mol%) and DABCO (40 mol%) were added at room temperature and the mixture was heated at 60 C for 2 to 5 h. After completion of reaction (monitoring by TLC) mixture was cooled to room temperature and extracted with EtOAc (2×10 mL). The organic layers were washed with brine, dried using sodium sulfate. Evaporation of the solvent gave the crude product which was purified by silica gel column chromatography to give 3-hydroxy-3-(phenylethynyl)indolin-2-ones (3a-3u).

Hope you enjoy the show about 60434-13-1.

Reference:
Article; Paplal, Banoth; Sathish, Kota; Nagaraju, Sakkani; Kashinath, Dhurke; Catalysis Communications; vol. 135; (2020);,
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Related Products of 13220-46-7, Modeling chemical reactions helps engineers virtually understand the chemistry, optimal size and design of the system, and how it interacts with other physics that may come into play.

Example 3 3-(3H-Isobenzofuran-1-ylidene)-4-methyl-1,3-dihydro-indol-2-one To a solution containing 4-methyloxindole (0.15 g, 1.02 mmol) and phthalide (0.178 g, 1.33 mmol) in 3.0 mL DMF was added 2.14 mL of sodium hexamethyldisilazane (1.0 M in tetrahydrofuran (THF)) over 1 min. The solution was stirred at room temperature for 30 min and then poured into 50 mL of 4% HCl to give a yellow solid. The aqueous mixture was extracted with EtOAc and the organic phase washed with saturated NaHCO3, H2O, dilute HCl, brine and the solution dried with Na2SO4. The solvent was removed in vacuo and the solid obtained was purified by chromatography (silica gel, CHCl3/EtOAc, 7:3). The solid obtained was recrystallized from EtOAc/hexanes to afford the title compounds (3.8 mg) as a yellow solid.

Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.Read on for other articles about 13220-46-7.

Reference:
Patent; Allergan Sales, LLC; US6541504; (2003); B1;,
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Chemical research careers are more diverse than they might first appear, as there are many different reasons to conduct research and many possible environments. Reference of 2058-74-4

General procedure: The mixture of the Fe(III)(at)g-C3N4 nanocomposite (70 mg, 0.35 mmol based on Fe(III)) in aqueous media (3 ml) was dispersed for 30 min. Isatin (1 mmol) and indole (2.0 mmol) were added to the mixture and stirred in reflux conditions for an appropriate time. After the reaction was completed, the crude product was extracted with ethyl acetate and dried over anhydrous Na2SO4 followed by evaporation of the solvent. The pure products were achieved by recrystallization in hot ethanol and identified by IR, 1H & 13C NMR spectral data. The nanocomposite was washed with EtOH, dried, and reused for the next run.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 1-Methylisatin.

Reference:
Article; Allahresani, Ali; Taheri, Bahare; Nasseri; Research on Chemical Intermediates; vol. 44; 11; (2018); p. 6741 – 6751;,
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In chemical reaction engineering, simulations are useful for investigating and optimizing a particular reaction process or system., Product Details of 1127-59-9

General procedure: Compound B (11.9 mg, 0.02 mmol) was added at 4 C in a mixed solution of Eosin 1a (29.4 mg, 0.2 mmol) and methyl acetoacetate 2a (107.8 muL, 1.0 mmol) in tetrahydrofuran (1.0 mL). The reaction was stirred at 4 C for 96 hours. Spin-drying, column chromatography (petrole ether: ethyl acetate = 1 : 1-1 : 2), and evaporated to give a pale yellow amorphous solid 49.0mg, yield 93%, 90% ee.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 7-Methylindoline-2,3-dione.

Reference:
Patent; Anhui University of Technology; Zhang Dongxin; Yin Lei; Zhong Junchao; Man Jingjing; Chen Yan; Zhang Qianfeng; (21 pag.)CN110041243; (2019); A;,
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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. 480-91-1, name is Isoindolin-1-one belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. Reference of 480-91-1

General procedure: Phthalimidine (800 mg, 6.01 mmol) was dissolved in THF(40 mL). At ambient temperature triethylamine (670 mg,6.62 mmol) was added dropwise and the mixture was stirred for5 min, whereupon dichlorophenylphosphine (538 mg, 3.01 mmol)was added and the mixture was stirred for one day. Thereafter thewhite precipitate was filtered and washed with THF (3 mL). Thecombined filtrate and washings were evaporated to dryness (condensationof volatiles into a cold trap under reduced pressure), theresidue was dissolved in THF (10 mL) and the solution was filteredthrough Celite. After vapor diffusion of n-pentane into the filtrate(for one week), white crystalline product suitable for single-crystalX-ray diffraction was obtained. The supernatant was removed bydecantation, the white solid was washed with n-pentane (3 mL)and dried in vacuo to yield 480 mg (1.29 mmol, 43%) of 1b.

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 480-91-1.

Reference:
Article; Gericke, Robert; Wagler, Joerg; Polyhedron; vol. 125; (2017); p. 57 – 67;,
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Formula: C10H9NO2, The prevalence of solvent effects in heterogeneous catalysis has motivated developing quantitative kinetic, spectroscopic, and theoretical assessments of solvent structures and their interactions with reaction intermediates and transition states.

General procedure: In a 25 mL round bottom flask, isatins 1 (1 mmol), 3-phenylisoxazol-5(4H)-one 2 (1 mmol) or 3-ethylisoxazol-5(4H)-one 7 (1 mmol), pyrazol-5-amine 3 (1 mmol) or 6-aminopyrimidine-2,4-(1H,3H)-dione 5 (1 mmol), and Amberlyst-15 (100 mg) were stirred in CH3OH (5.0 mL) at 80 C. When the reaction was completed (detected by TLC), the spherical catalyst was separated by a sieve at once under hot condition. Then, the reaction mixture was cooled to room temperature, and solid precipitation occurred. After filtration, the crude product was recrystallized from EtOH and DMF to give pure compound.

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 39603-24-2.

Reference:
Article; Niu, Qingqing; Xi, Junhua; Li, Lei; Li, Li; Pan, Chengli; Lan, Meijun; Rong, Liangce; Tetrahedron Letters; vol. 60; 43; (2019);,
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SDS of cas: 317-20-4, New month, new HOT articles! We are pleased to share a selection of our referee-recommended HOT articles for 2021. We hope you enjoy reading these articles.

General procedure: A mixture of isatins 1 (1 mmol), substituted 1H-pyrazol-5-amine 2 (1 mmol), 6-aminopyrimidine-2,4(1H,3H)-dione 3 or 6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione 5 (1 mmol), H2O(6 mL), and HOAc (2 mL) was placed in a 25-mL flask andstirred at 90 C (monitored by thin layer chromatography (TLC)) for about 7 h. Afterreaction completion, the mixture was cooled to room temperature and the precipitateobtained by filtration. Compounds 4 or 6 were further purified by recrystallizationfrom DMF.

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; Dai, Lei; Mao, Kaimin; Pan, Zhengbing; Rong, Liangce; Research on Chemical Intermediates; vol. 45; 2; (2019); p. 769 – 788;,
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Career opportunities within science and technology are seeing unprecedented growth across the world, and those who study chemistry or another natural science at university now have increasingly better career prospects. Recommanded Product: Potassium 1,3-dioxoisoindolin-2-ide

General procedure: Potassium phthalimide (0.93 g, 5 mmol) was added to a solution of 1,2-dibromoethane (1.3 mL, 15 mmol) in DMF (8 mL). The mixture was stirred at room temperature overnight and evaporated the solvent in vacuo, the residue dissolved in H2O and extracted with ethyl acetate. The organic layer was washed by brine and dried by MgSO4. Filtered and the solvent evaporated in vacuo, recrystallized from ethyl acetate to give white solid (566 mg, 45 %).

Keep reading other articles of Potassium 1,3-dioxoisoindolin-2-ide! Don’t worry, you don’t need a PhD in chemistry to understand the explanations! I believe this compound will play a more active role in future production and life.

Reference:
Article; Zhang, Wei; Zhou, Xin-Yang; Yu, Qin-Ying; Du, Lu-Pei; Li, Min-Yong; Chinese Chemical Letters; vol. 27; 2; (2016); p. 185 – 189;,
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