Author: Jessica.F

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. 868066-91-5, name is 5-Bromo-2-methylisoindolin-1-one, This compound has unique chemical properties. The synthetic route is as follows., Formula: C9H8BrNO

In a vial was combined 5-bromo-2-methylisoindolin-1-one (226 mg, 1.00 mmol) [Ark Pharm cat AK-37748], 4,4,5,5,4?,4?,5?,5?-octamethyl-[2,2?]bi[[1,3,2]dioxaborolanyl] (0.533 g, 2.10 mmol), potassium acetate (294 mg, 3.00 mmol), 1,4-dioxane (5.0 mL), and [1,1?-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (36.6 mg, 0.050 mmol). The vial was de-gassed by bubbling nitrogen through the solvent for 5 minutes then heated to 90 C. overnight. The mixture was allowed to cool to room temperature and was then filtered using a syringe filter. The filtrate was then concentrated under reduced pressure and used without further purification. LC-MS calculated for C15H21BNO3(M+H)+: m/z=274.2. found 274.1.

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 868066-91-5.

Reference:
Patent; Incyte Corporation; Wu, Liangxing; Konkol, Leah C.; Lajkiewicz, Neil; Lu, Liang; Xu, Meizhong; Yao, Wenqing; Yu, Zhiyong; Zhang, Colin; He, Chunhong; (107 pag.)US2016/9712; (2016); A1;,
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Some common heterocyclic compound, 919103-45-0, name is 6-Iodoindolin-2-one, molecular formula is C8H6INO, 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. Formula: C8H6INO

[0496] A nitrogen purged vessel is loaded with starting material 6-Iodoindolinone (105 kg, 405 mol, 1.0 eq), catalyst 4-dimethylaminopyridine (DMAP) (2.52 kg) under argon counter flow. Then triethylamine (145 kg, 3.5 eq) and solvent 2-methyltetrahydrofuran (605 kg) are charged to the vessel and the resulting solution is cooled to -15 C. to -5 C. (preferentially -10 C.). Benzoylchloride (176.6 kg, 3.1 eq) is added to this mixture at an internal temperature of -10 C. to 50 C. within at least 30 min. [0497] The addition funnel is then flushed with 2-methyltetrahydrofuran (22 kg) and the reaction mixture is stirred for an additional hour at an internal temperature of 10 to 30 C. If the content of starting material 6-iodoindolinone is greater than 2.5 area % (HPLC), another portion of benzoylchloride (5.7 kg) is added to complete the reaction. If the content of starting material 6-iodoindolinone is smaller than 2.5 area % (HPLC), lithium hydroxide (59.4 kg, 6.0 eq) is added in 5 differently sized portions (1st: 18.0 kg, 2nd: 6.0 kg, 3rd: 6.0 kg, 4th: 15.0 kg, 5th: 14.4 kg) in a temperature controlled manner: After the two first portions, the mixture is stirred for 1 hour. After portion 3 and 4, the mixture is stirred for 30 min. After the last portion, the mixture is stirred for two hours. The reaction mixture (suspension) is then stirred for at least 12 hours at an internal temperature of 20 to 30 C. If the content of the non isolated intermediate of formula (V) is smaller than 0.5 area % (HPLC), water (525 L) is added and the mixture is heated to an internal temperature of 60 to 70 C. under stirring. Then the stirrer is switched off, the mixture is settled down and the phases are separated at an internal temperature of 60 to 70 C. To the upper organic layer, water (525 L) is added and a second phase separation is carried out at an internal temperature of 60 to 70 C. (Optionally, the mixture might be left stand at room temperature for up to 24 hours.) Then a partial solvent switch to tetrahydrofuran is carried out: Solvent is distilled off three times at a jacket temperature of 70 C. down to a residual volume of 390 L followed by addition of tetrahydrofuran (1st: 233 kg, 2nd: 233 kg, 3rd: 117 kg). For crystallization, firstly, methanol (83 kg) is added. [0498] Optionally, the mixture might be left stand at room temperature for up to 24 hours. Secondly, water (112 L) is added at an internal temperature of 60 to 70 C., followed by addition of conc. hydrochloric acid (156.2 kg). The addition funnel is flushed with water (20 L). The resulting suspension is cooled to 20 to 30 C. within at least 70 min (optionally, the mixture might be left stand at room temperature for up to 72 hours) and then to an internal temperature of minus 5 to 5 C. within at least 30 min. The suspension is then centrifuged and the solid is washed with water (368 L) followed by methanol (112 kg) and dried at a jacket temperature of 50 C. until <=1% of residual solvent is reached. The enol product of formula (IV) is obtained as solid in 84.6% yield. These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 919103-45-0, its application will become more common. Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; MAIER, Gerd-Michael; BAUM, Anke; BETZEMEIER, Bodo; HENRY, Manuel; HERTER, Rolf; REISER, Ulrich; SINI, Patrizia; WEBER, Dirk; WERTHMANN, Ulrike; ZAHN, Stephan Karl; US2014/18372; (2014); A1;,
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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 366453-22-7 as follows. Recommanded Product: 4-Methoxyisoindolin-1-one

To an ice-cold solution of 2c (291 mg, 1.78 mmol) in CH2Cl2 (20 mL) was added a 1.0 M BBr3 solution in CH2Cl2 (3.6 mL, 3.6 mmol). The cold bath was then removed and the resulting solution was stirred for 16 h at ambient temperature. The reaction was carefully quenched by addition of water and the mixture was extracted with EtOAc. The combined organic layers were washed with water and brine, dried (MgSO4), filtered and evaporated to dryness to give 2d (232 mg, 87% yield) as beige solid.

According to the analysis of related databases, 366453-22-7, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Boehringer Ingelheim (Canada) Ltd.; US2004/106791; (2004); A1;,
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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. 25369-33-9, name is 7-Chloroindolin-2-one, This compound has unique chemical properties. The synthetic route is as follows., Product Details of 25369-33-9

To a cooled (0 C.) solution of 7-chloroindolin-2-one (1.0 g, 6.0 mmol) in TFA (11 mL) was added N-bromosuccinimide (1.0 g, 6.0 mmol) portion wise, and the resulting mixture was stirred at 0 C. for 6 h. The solvent was removed in vacuo and the residue was diluted and evaporated successively with DCM (25 mL) and EtOAc (25 mL). The crude product was triturated with EtOH to provide the title compound as a white solid (861 mg, 58% yield). MS (ESI): mass calcd. for C8H5BrClNO, 244.9; m/z found, 246.0 [M+H]+. 1H NMR (500 MHz, DMSO-d6) delta 10.92 (s, 1H), 7.52-7.48 (m, 1H), 7.38 (d, J=1.2 Hz, 1H), 3.62 (s, 2H).

According to the analysis of related databases, 25369-33-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Janssen Pharmaceutica NV; Ameriks, Michael K.; Laforteza, Brian Ngo; Lebold, Terry Patrick; Ravula, Suchitra; Savall, Brad M.; Shireman, Brock T.; (70 pag.)US2018/111942; (2018); A1;,
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Application of 56341-39-0, 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. 56341-39-0 name is 6-Fluoroindolin-2-one, 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.

At 130 C., 82.5 g of 6-fluoro-2-indolinone (starting material IV) are stirred in 180 ml acetic anhydride for 3 hours. After cooling to room temperature, the precipitate is filtered off with suction, washed with 100 ml of petroleum ether and dried. [0256] Yield: 64.8 g (61% of theory) [0257] Rf value: 0.75 (silica gel, petroleum ether/ethyl acetate=1:1) [0258] C10H8FNO2 [0259] Mass spectrum: m/z=192 [M-H]-

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

Reference:
Patent; Boehringer Ingelheim Pharma GmbH & Co. KG; US2005/43389; (2005); 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. 7477-63-6, name is 7-Chloroisatin, A new synthetic method of this compound is introduced below., Application In Synthesis of 7-Chloroisatin

General procedure: To a well-stirred solution of aldehyde 1 or isatin 4 (2 mmol) and tetronic acid 2(4 mmol) in ethanol (5 mL) was added sulfamic acid (20 mol percent) with continuous stirring. With the progress of the reaction, a yellowish solid separated out. Upon completion of the reaction (TLC), the resultant solid was filtered, washed with ethanol and dried. The resultant bis-tetronic acid 3/5 was found to be pure and did not require any further purification.

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; Pandit, Kapil S.; Desai, Uday V.; Wadgaonkar, Prakash P.; Kodam, Kisan M.; Research on Chemical Intermediates; vol. 43; 1; (2017); p. 141 – 152;,
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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. 71294-03-6, name is 7-Fluoroindolin-2-one belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. Quality Control of 7-Fluoroindolin-2-one

a) 7-Fluoro- 1 ,3,3-trimethylindolin-2-one To a suspension of NaH (8.79 g, 220 mmol) in tetrahydrofuran (100 ml) was added 7- fluoroindolin-2-one (8.30 g, 54.9 mmol) in portion within 20 minutes. The reaction mixture was stirred for 30 minutes. Mel (31.2 g, 13.7 ml, 220 mmol) was added dropwise at 24-27C within 1.5 hours. The reaction mixture was stirred at room temperature for 3 hours. The reaction mixture was very carefully quenched with 20 ml saturated aqueous ammonium chloride solution at 10-15C, then diluted with tert-butyl methyl ether and water. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were washed with brine and dried over sodium sulfate. The solvent was evaporated and the residue purified by silica gel chromatography using ethyl acetate/ heptane as eluent. The title compound was obtained as orange crystals (9.91 g). MS ESI (m/z): 194.3 [(M+H)+]. 1H NMR (CDC13, 400 MHz): (ppm) = 6.99-6.97 (m, 3H), 3.43 (d, J = 2.62 Hz, 3H), 1.37 (s, 6H).

The synthetic route of 71294-03-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BRUNNER, Daniela; MALBERG, Jessica; SHANKAR, Bavani G.; KOLCZEWSKI, Sabine; LIMBERG, Anja; PRINSSEN, Eric; RIEMER, Claus; STOLL, Theodor; WO2014/40969; (2014); A1;,
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Synthetic Route of 317-20-4, 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. 317-20-4, name is 7-Fluoroisatin, This compound has unique chemical properties. The synthetic route is as follows.

General procedure: A mixture of 2-amino benzophenone (1 mmol), corresponding isatin or aldehyde (1 mmol) and ammonium acetate (2 mmol) in ethanol (5 mL) was stirred at room temperature. The progress of reaction was monitored by TLC. After completion of the reaction ice-cold water was added and stirred for a while. The solid product obtained was filtered and washed with water. This was further purified by crystallization from ethanol or by short column chromatographyon silica gel using ethyl acetate-petroleum ether as the eluent.

The chemical industry reduces the impact on the environment during synthesis 7-Fluoroisatin. I believe this compound will play a more active role in future production and life.

Reference:
Article; Kamal, Ahmed; Babu, Korrapati Suresh; Chandrasekhar, Cheemalamarri; Nagaraju, Burri; Visweswara Sastry; Ganesh Kumar; Tetrahedron Letters; vol. 56; 46; (2015); p. 6373 – 6376;,
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Synthetic Route of 3676-85-5, A common heterocyclic compound, 3676-85-5, name is 5-Aminoisoindoline-1,3-dione, molecular formula is C8H6N2O2, 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 98 N-(1,3-Dioxo-2,3-dihydro-1H-5-isoindolyl)-N’-(2,3,4,5,6-pentafluorobenzyl)urea Diphenylphosphoryl azide (248 mg, 0.90 mmol, 1.2 eq) and triethylamine (91 mg, 0.90 mmol, 1.2 eq) were added to a solution of 2,3,4,5,6-pentafluorophenylacetic acid (158 mg, 0.75 mmol) in toluene, and the mixture was stirred at 110C for 60 min. Thereafter, 4-aminophthalimide (59 mg, 0.75 mmol, 1.0 eq) and a minor amount of DMF were added thereto, and the mixture was stirred at 110C for 2.5 hr. After the completion of the reaction, water and ethyl acetate were added thereto, and the precipitated crystal was collected by filtration and was washed with ethyl acetate to give the title compound as a crystal (12 mg, 7.0%). MS m/z: 385 1H-NMR delta: 4.45 (2H, d, J = 5.12 Hz), 7.07 (1H, t, J = 5.98 Hz), 7.58 (1H, dd, J = 1.71, 8.05 Hz), 7.66 (1H, d, J = 8.05 Hz), 7.97 (1H, d, J = 1.95 Hz), 9.30 (1H, s), 11.09 (1H, s)

The synthetic route of 3676-85-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; KIRIN BEER KABUSHIKI KAISHA; EP1256574; (2002); A1;,
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Adding a certain compound to certain chemical reactions, such as: 7147-90-2, name is 5-Chloroisoindoline-1,3-dione, 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 7147-90-2, Application In Synthesis of 5-Chloroisoindoline-1,3-dione

Protected with nitrogen, cooled to 0 C in an ice bath, added 1.0 g (5.5 mmol) of 5-chloroimphthalate to the reaction flask, added 30 ml of DCM, and contained 1.3 g (8.62 mmol) of n-butylmagnesium bromide. THF solution (8ml) was added dropwise to the reaction flask, and the reaction was performed in an ice bath for 1.5 hours. TLC showed no reaction. The temperature was raised to room temperature, and 1.5 equivalents of n-butyl magnesium bromide Grignard reagent were added. The reaction was performed for 2.5 hours. The reaction was shown to be complete. The reaction wasquenchedwith saturated NH4Cl, extracted with DCM, dried, concentrated, and subjected to silica gel column chromatography. A mixture of ethyl acetate and petroleum ether was used as the eluent (the volume ratio of ethyl acetate and petroleum ether was 1: 1), to obtain a mixture of 3-n-butyl-5-chloro-3-hydroxyisoindolin-1-one and 3-n-butyl-6-chloro-3-hydroxyisoindolin-1-one, Yield 45.5%,

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-Chloroisoindoline-1,3-dione, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Aisite (Chengdu) Bio-pharmaceutical Co., Ltd.; Fu Jiasheng; Chen Xing; Yang Youzhe; Chen Xiaogang; Chen Jiachang; Sun Jingxiong; Gan Man; Guo Peng; (41 pag.)CN110563631; (2019); A;,
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