Month: July 2021

2058-72-2, name is 5-Bromo-1-methylindoline-2,3-dione, belongs to indolines-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. category: indolines-derivatives

General procedure: To a hot stirred solution of the key intermediates 3a, b (0.27 gm,1 mmol) and sodium acetate (0.16 gm, 2 mmol) in acetic acid(15 mL), N-substituted isatins 6a-f were added and this mixturewas heated under reflux for 3 h. The formed solidwas filtered whilehot, dried and recrystallized from DMF/ethanol to obtain the targetcompounds 7a-g.

The synthetic route of 2058-72-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Eldehna, Wagdy M.; Abo-Ashour, Mahmoud F.; Nocentini, Alessio; Gratteri, Paola; Eissa, Ibrahim H.; Fares, Mohamed; Ismael, Omnia E.; Ghabbour, Hazem A.; Elaasser, Mahmoud M.; Abdel-Aziz, Hatem A.; Supuran, Claudiu T.; European Journal of Medicinal Chemistry; vol. 139; (2017); p. 250 – 262;,
Indoline – Wikipedia,
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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. 924304-73-4, name is 4-Chloroisoindoline hydrochloride, This compound has unique chemical properties. The synthetic route is as follows., Formula: C8H9Cl2N

Step 3: Synthesis of (2Jff,65>,13a5′,14ai?,16a5rZ)-ethyI 6-(tert-butoxycarbonylamino)-2-(4- chloroisoindoline-2~carbonyloxy)-5,16-dioxo-2,3,5,6,7,8,9,ll,13a,14,14a,15,16,16a- tetradecahydro-lH-cyclopropa(e)pyrrolo[2,l-i][l,7,10joxadiazacyclopentadecine-14a- carboxylate[0472] (2R,6S, 13aS, 14aR, 16aS,Z)-ethyl 6-(tert-butoxycarbonylamino)-2-hydroxy- 5,16-dioxo~2,3,5,6,7,8,9,l l,13a,14,14a,15,16,16a4etradecahydro-1H- cyclopropa(e)pyrrolo[2,l-/][l,7,10]oxadiazacyciopentadecine-14a-carboxylate (0.30 g, 0.61 mmol) in toluene (5 mL) was added lj ‘-carbonyldiimidazole (0.12 g, 0.73 ramol) in one portion. The reaction was stirred at room temperature for 3 hours. To the reaction was then added the N-ethyl-N-isopropylpropan-2-amine (0.53 mL, 3.0 mmol), followed by 4- chloroisoindoline hydrochloride salts (0.15 g, 0.79 mmol). The reaction was stirred at 60 C for 3 hours. The solvent was removed. The residue was partitioned between ethyl acetate (20 mL) and saturated sodium bicarbonate solution. The organic layer was separated and dried over sodium sulfate. After removal of solvent, the residue was purified by chromatography (etaexanerEthyl acetate=l:3) to give (2/?,65,13a5,14aR,16a5’,Z)-ethyI 6-{tert- butoxycarbonylamino)-2-(4-chloroisoindoline-2-carbonyloxy)-5,16-dioxo- 2,3,5,6,7,8,9,11, 13a,14,14a,15,16,16a-tetradecahydro-1H-cyclopropa(phiyrrolo[2,l- /][l,7,10]oxadiazacyclopentadecine-14a-carboxylate as white solid (0.18 g, 86%). MS: Calcd.: 674.3; Found: [M+eta]+ 675.1.

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 924304-73-4.

Reference:
Patent; INTERMUNE, INC.; ARRAY BIOPHARMA, INC.; WO2008/137779; (2008); A2;,
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Indoline | C8H9N – PubChem

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. 52351-75-4, name is 6-Methoxyindoline-2,3-dione, This compound has unique chemical properties. The synthetic route is as follows., category: indolines-derivatives

(c) Methyl 4-methoxy-anthranilate One hundred fifty-eight grams (0.89 mol) of 6-methoxy-isatine are suspended in 1300 ml of methanol and mixed with a solution of 54 gm (1.34 mol) of sodium ethoxide in 500 ml of methanol. One hundred eight milliliters (1.07 mol) of 30% hydrogen peroxide are added thereto dropwise, under stirring, and the resulting mixture is stirred for 30 minutes. The contents of the flask are concentrated down to half their volume, mixed with water, and adjusted to a pH of 5 to 6 with glacial acetic acid. After extraction with methylene chloride, the mixture is subjected to suction filtration, kieselguhr being used, and dried with sodium sulfate, and the solvent is distilled off. The residue is recrystallized from petroleum ether/cyclohexane (2:1). M.p: 80-82 C., Yield: 109 gm (67.7% of theory). The following compounds are prepared by analogous procedures:

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 52351-75-4.

Reference:
Patent; Dr. Karl Thomae GmbH; US4518597; (1985); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

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. 675109-26-9, name is 6-Bromoisoindolin-1-one, A new synthetic method of this compound is introduced below., Computed Properties of C8H6BrNO

TDI01239-1 (500 mg, 2.358 mmol) was dissolved in tetrahydrofuran (24 mL), and cooled to 0 C. Under the protection of nitrogen, 60% NaH (236 mg, 5.895 mmol) was added to the above reaction solution, and the reaction was performed at room temperature for 1h after the addition. Bromoethyl acetate was then added at 0 C, and the reaction was continued at room temperature for 2h. LC-MS indicated the reaction was complete. After completion of the reaction, ice water and 1N HCl solution was added to quench the reaction, and the aqueous phase was extracted with ethyl acetate (15 mL). The combined organic phase was washed with saturated brine, dried over anhydrous sodium sulfate and concentrated to dryness to afford TDI01239-2 (700 mg, yellow solid, yield: 99.57%). MS m/z (ESI): 298.1 [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; Beijing Tide Pharmaceutical Co., Ltd.; Zhao, Yanping; Wang, Hongjun; Li, Gong; Jiang, Yuanyuan; Li, Xiang; Zhou, Liying; Liu, Yanan; (106 pag.)EP3421464; (2019); A1;,
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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. 169037-23-4, name is 5-(Trifluoromethoxy)indoline-2,3-dione, A new synthetic method of this compound is introduced below., HPLC of Formula: C9H4F3NO3

3beta-hydroxy-5alpha,8alpha-peroxyandrost-6-ene-17-hydrazine obtained in the step (f)(100 mg, 0.30 mmol) and 5-trifluoromethoxy-isatin (76.2 mg, 0.30 mmol) dissolved in 20 mLIn absolute ethanol, placed in a 50 mL single-necked flask, and the system was heated to 50 C for 2 to 4 hours.The reaction was terminated until no starting material was reacted. Decomposition under reduced pressure, purification by silica gel column,The product was obtained as a pale yellow solid, 114.2 mg, yield: 70%.

The synthetic route of 169037-23-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Qiqihar Medical University; Bu Ming; Wang Haijun; Wang Jing; Lin Yu; Li Hongling; Ma Yukun; (18 pag.)CN108707180; (2018); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Adding a certain compound to certain chemical reactions, such as: 350797-56-7, name is 3-(7-Cyano-5-(2-nitropropyl)indolin-1-yl)propyl benzoate, belongs to indolines-derivatives 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 350797-56-7, HPLC of Formula: C22H23N3O4

Procedure-2: To a stirring solution of 3-(7-Cyano-5-(2-nitropropyl)-indolin-l-yl)- propyl benzoate of Formula XII (10 g, 25.4mmol) in methanol (50 ml) was added con. HC1 (10 ml) followed by Zn (3.35 g, 50.08mmol). The mixture was heated to 60-65 C for 20 h. After completion of the reaction, the mixture was filtered and the residue was washed with Methanol (5 ml). The filtrate was concentrated under vacuum and the residue was dissolved in water and washed with isopropyl ether (2×20 ml). The MDC (80 ml) was added to the aqueous layer and basified the mixture by adding aqueous 20% NaOH solution. The obtained solid slurry mass was filtered and both the layers were separated from the filtrate. The organic layer was washed twice with water (2 x 100 ml) and concentrated under vacuum to get 8.5 g of 3-(5-(2-aminopropyl)-7- cyanoindolin-l-yl)propyl benzoate of Formula XII as a thick mass (HPLC purity is -abo-ve-95-%).

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, 3-(7-Cyano-5-(2-nitropropyl)indolin-1-yl)propyl benzoate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; PANACEA BIOTEC LTD; JAIN, Rajesh; RAO, Jagadeeshwar R; RAO, Siripragada Mahender; WO2012/131710; (2012); A2;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

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. 20870-79-5, name is 5-Nitroindolin-2-one, A new synthetic method of this compound is introduced below., Quality Control of 5-Nitroindolin-2-one

Step-b: tert-butyl 5-nitro-2-oxoindoline-l-carboxylate: Di-tert-butyl dicarbonate (4.63 g, 21.2 mmol) and sodium hydrogen carbonate (10.7 g, 127 mmol) were added to a stirred solution of 5-nitroindoIin-2-one (3.0 g, 14.2 mmol) in THF (150 mL) and the mixture was heated to 60C. After 3h, the reaction mixture was cooled, filtered and the filtrate was concentrated under reduced pressure. The obtained crude was purified by chromatography by using silica gel using a mixture of 10% ethyl acetate/hexane as an eluent to get the desired compound as a white solid as (2.3 g, 51%). 1H-NMR (300 MHz, DMSO-i/6): delta 8.3 (d, 1H), 8.2 (s, 1H), 7.9 (d, 2H), 3.8 (s, 2H), 1.5 (s, 9H).

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; ORION CORPORATION; UJJINAMATADA, Ravi Kotrabasaiah; HOSAHALLI, Subramanya; SAMAJDAR, Susanta; ABBINENI, Chandrasekhar; WO2015/92118; (2015); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Adding a certain compound to certain chemical reactions, such as: 19727-83-4, name is 6-Nitroindoline, belongs to indolines-derivatives 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 19727-83-4, name: 6-Nitroindoline

Step A: 6-Nitroindoline (3.0 g, 18.3 mmol) was dissolved in THF (45 mL) and Et3N (3.4 mL, 24.4 mmol) at O0C. Acetyl chloride (1.5 mL, 21 mmol) was added drop wise. The mixture was stirred at room temperature for 30 minutes. The mixture was partitioned between EtOAc and aqueous HCl. The organic layer was dried and concentrated to yield l-acetyl-6-nitroindoline (3.8 g, 100%) as a yellow solid.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Patent; PTC THERAPEUTICS, INC.; HWANG, Peter Seongwoo; TAKASUGI, James; REN, Hongyu; WILDE, Richard Gerald; TURPOFF, Anthony; AREFOLOV, Alexander; KARP, Gary Mitchell; CHEN, Guangming; CAMPBELL, Jeffrey Allen; WO2006/19831; (2006); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Reference of 20870-79-5,Some common heterocyclic compound, 20870-79-5, name is 5-Nitroindolin-2-one, molecular formula is C8H6N2O3, 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: Trifluoroacetic acid (0.75 mL, 0.009 mol) was added to a cooled (0 C) solution (4.5 mL CH2Cl2) of3-amino-2,2?-bipyridine (0.513 g, 0.003 mol), followed by isoamyl nitrite (0.61 mL, 0.004 mol). After 1 h,the diazonium salt of 3-amino-2,2?-bipyridine was precipitated out by cooling the reaction mixtureto -78 C, followed by the addition of diethyl ether (30 mL). The precipitate was filtered. A sample(2 mmol; 0.27 g) of indol-2-one was dissolved in dilute potassium hydroxide solution (15 mL) andcooled in a saltice bath and then cold diazonium solution was added to this cooled solution portionwise by stirring. The solution was further stirred at 0-5 C for 1 h. The pH of the reaction mixturewas maintained at 4-6 by the addition of solid sodium acetate in portions. The mixture was stirredfor 24 h at room temperature. The resulting solid was filtered, washed with cold water, and air-dried.Crystallization from ethanol gave yellow crystalline.

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

Reference:
Article; ?andrik, Robert; Tisovsky, Pavol; Csicsai, Klaudia; Donovalova, Jana; Gaplovsky, Martin; Sokolik, Robert; Filo, Juraj; Gaplovsky, Anton; Molecules; vol. 24; 14; (2019);,
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Synthetic Route of 39755-95-8, The chemical industry reduces the impact on the environment during synthesis 39755-95-8, name is 5-Methoxyisatin, I believe this compound will play a more active role in future production and life.

The mixture was poured into 500 g of ice and extracted 3 times with ethyl acetate. The combined extracts were dried over anhydrous sodium sulfate and concentrated to give 5.1 g (65% yield) of 5-methoxyisatin as a dark red solid. 5-Methoxyisatin (5.0 g) and 30 mL of hydrazine hydrate were heated to reflux for 15 minutes. The reaction mixture was cooled to room temperature and 50 mL of water was added. The mixture was extracted 3 times with 25 mL of ethyl acetate each time, the organic layers combined, dried over anhydrous sodium sulfate and concentrated to give a yellow solid. The solid was stirred in ethyl acetate and 1.1 g of insoluble material was removed by vacuum filtration and saved. This material proved to be 2-hydrazinocarbonylmethyl-4-anisidine. The filtrate was concentrated and chromatographed on silica gel eluding with ethyl acetate:hexane (1:1) to give 0.7 g of 5-methoxy-2-oxindole as a yellow solid.

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, 5-Methoxyisatin, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Sugen, Inc.; US6114371; (2000); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem