Tag: M.W=200-300

These common heterocyclic compound, 2058-72-2, name is 5-Bromo-1-methylindoline-2,3-dione, 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. 2058-72-2

General procedure: A mixture of isatin (1) (2.0 mmol), L-proline (2) (2.0 mmol) and acrylonitrile/methyl acrylate (3/5) (2.0 mmol) in 10 mL of water was heated in an oil bath at 80 C for 3 to 6 hours. Initially reaction mixture appeared to be homogeneous but with the progress of reaction the solid precipitated out. TLC indicated the consumption of L-proline and acrylonitrile while isatin was remaining in small portion. The reaction mixture was extracted many times with ethylacetate (EA). The combine organic layer was dried over anhydrous Na2SO4 and evaporated on rotary evaporator to provide yellow colour solid. The solid was purified by silica gel column chromatography using EA:hexane (4:6) as an eluent to provide desired product 4 and 6 as white solid. The yield mentioned in the analytical data has been calculated after recovering the unreacted isatin (amount mentioned in characterization data).

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 2058-72-2.

Reference:
Article; Tiwari, Keshri Nath; Pandurang, Taur Prakash; Pant, Suyash; Kumar, Rahul; Tetrahedron Letters; vol. 57; 21; (2016); p. 2286 – 2289;,
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99365-40-9, Adding a certain compound to certain chemical reactions, such as: 99365-40-9, name is 6-Bromoindolin-2-one, 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 99365-40-9.

a) 6-Bromo-3,3-dimethyl-indolin-2-one To a suspension of potassium tert-butylate (12.8 g, 114 mmol) in dry THF (80 ml) at 0C under an argon atmosphere was added portionwise 6-bromoindolin-2-one (5.0 g, 22.9 mmol) followed by copper(I) bromide-dimethylsulfide complex (470 mg, 2.29 mmol). Mel (6.82 g, 3.00 ml, 48.0 mmol) was added dropwise within 45 minutes, keeping internal temperature below 8 C. Thereaction mixture was warmed to room temperature and kept at this temperature for 16 hours. The reaction mixture was cooled to 0 C again and saturated aqueous ammonium chloride solution was cautiously added. The mixture was diluted with tert-butyl methyl ether and water. The aqueous phase was extracted with tert-butyl methyl ether, the combined organic phases were dried over sodium sulfate, the solvent was evaporated and the residue was purified by silica gelchromatography using ethyl acetate heptane as eluent. The title compound was obtained as light yellow solid (5.17 g).MS ESI (mz): 240.0 242.1 [(M+H)i.1H NMR (CDC13, 400 MHz): (ppm) = 8.12 (m, 1H), 7.20-7.16 (m, 1H), 7.09-7.08 (m, 1H),7.06-7.04 (m, 1H), 1.39 (s, 6H).

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, 6-Bromoindolin-2-one, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; BRUNNER, Daniela; HILPERT, Hans; KOLCZEWSKI, Sabine; LIMBERG, Anja; MALBERG, Jessica; PRINSSEN, Eric; RIEMER, Claus; SHANKAR, Bavani G.; STOLL, Theodor; WO2014/202493; (2014); A1;,
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20870-78-4, These common heterocyclic compound, 20870-78-4, name is 5-Bromoindolin-2-one, 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.

NaH (60 % in mineral oil; 5.66 g, 141.48 mmol) was added portionwise to a mixture of 5-bromo-l,3-dihydro-2H-Indol-2-one (10.0 g, 47.16 mmol) in THF (100 ml) at 0 C.The mixture was stirred for 30 min, and then CH3I (21.42 g, 150.91 mmol) was added.The r.m. was stirred at 0 C for 30 min. Subsequently, H20 (2 ml) was added dropwise.The solvent was removed in vacuo. The residue was dissolved in H20 (q.s.) and extracted with EtOAc. The separated organic layer was washed with brine, dried (Na2S04), filtered and evaporated in vacuo. The residue was purified by column chromatography (eluent: PE/EtOAc 20/1). The desired fractions were collected and the solvent was evaporated. Yield: 9.5 g of intermediate 3 (79 % yield).

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 20870-78-4.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; MEERPOEL, Lieven; MAES, Louis, Jules, Roger, Marie; DE WIT, Kelly; WO2012/84804; (2012); A1;,
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3416-57-7, A common heterocyclic compound, 3416-57-7, name is 2-(2-Oxopropyl)isoindoline-1,3-dione, molecular formula is C11H9NO3, 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.

[0317] To a solution of 2-(2-oxopropyl)isoindoline-1,3-dione (1 g, 4.9 mmol) in 20 mL ofDMF-DMA was added some of 4A molecular sieve. The reaction mixture was stirred at 100 Cunder N2 for 15 hr. After cooling down toRT, the mixture was filtered and collected 600 mg(47.5%) of crude (E)-2-(4-(dimethylamino)-2-oxobut-3-enyl) isoindoline-1,3-dione as a solid.MS (ESI) m/e [M+It 259.1.

The synthetic route of 3416-57-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GUO, Yunhang; BEIGENE, LTD.; WANG, Zhiwei; WO2014/173289; (2014); A1;,
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1055412-47-9, 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. 1055412-47-9, name is su-5614, This compound has unique chemical properties. The synthetic route is as follows.

A suspension of 5-chloro-3-(1H-pyrrol-2-yl-methylene)-1,3-dihydro-indol-2-one (260 mg, 0.96 mmol), piperidine (95 muL, 0.96 mmol) and paraformaldehyde (43 mg, 1.44 mmol) in 5 mL of dioxane and 5 mL of EtOH was heated to 80 C. for 15 h. The resulting solution was cooled to room temperature followed by cooling to -20 C. for 1 h. The solid which formed was collected by filtration and rinsed with EtOH (previously cooled to -20 C.). The solid collected was dried under vacuum to give the title compound (180 mg, 51%) as a yellow-orange 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; Allergan, Inc.; US2004/102509; (2004); A1;,
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99365-40-9, 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 99365-40-9 as follows.

n-Butyl lithium (2.5 M in hexanes, 3.8 mL, 9.5 mmol) was added dropwise over 30 minutes to a stirred suspension of 6-bromoindolin-2-one (preparation 1, 1.00 g, 4.7 mmol) and N,N,N’,N’-tetramethylethylenediamine (1.42 mL, 9.4 mmol) in tetrahydrofuran (20 mL) at – 78 C. The mixture was stirred for 1 hour, then 1,4-diiodobutane (3.11 mL, 23.6 mmol) was added dropwise over 5 minutes. The mixture was warmed to -20 C over a 1 hour period, was stirred for a further hour at this temperature and was then warmed to room temperature. After 3 hours stirring at room temperature, saturated aqueous ammonium chloride solution was added to the reaction and the mixture was extracted with ethyl acetate. The organic layer was washed with water, brine, dried (MgSO4) and evaporated. Purification of the residue by flash chromatography (10:1 hexanes/ethyl acetate) gave the title compound (0.57 g, 45%) as a pale pink solid. LRMS (m/z): 266/268 (M+1)+. 1H-NMR delta (CDCl3): 1.81-2.20 (m, 8H), 7.02-7.06 (m, 2H), 7.14-7.18 (m, 1H), 7.83 (brs, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 99365-40-9, and friends who are interested can also refer to it.

Reference:
Patent; Laboratorios Almirall, S.A.; EP2108641; (2009); A1;,
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3416-57-7, Adding a certain compound to certain chemical reactions, such as: 3416-57-7, name is 2-(2-Oxopropyl)isoindoline-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 3416-57-7.

(1) Synthesis of N-[2-(N-methoxyimino)propyl]-phthalimide 1.33 g (6.55 mmol) of N-(2-oxopropyl)phthalimide was dissolved in 30 ml of ethanol and to the solution was added 1.64 g (19.7 mmol) of O-methylhydroxylamine hydrochloride. To this suspension was added 20 ml of 2N aqueous sodium hydroxide solution, followed by being stirred at room temperature for 12 hours. The reaction mixture was poured into 100 ml of water and extracted with chloroform (30 ml*3), and the combined organic layer was dried over magnesium sulfate. Chloroform was distilled off and the residual solids were washed with hexane to give 1.03 g (yield 68%) of the titled compound as colorless crystals. Melting point 114-131 C., 1 H-NMR spectrum (DMSO-d6, TMS as internal standard); delta=1.83(s, 3H), 3.73(s, 3H), 4.35(m, 2H), 7.82(s, 4H)ppm, IR spectrum (KBr); numax=2870w, 1680s, 1360s, 1315s, 1035s, 900w, 825m, 695m cm-1,

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, 2-(2-Oxopropyl)isoindoline-1,3-dione, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Mitsubishi Gas Chemical Co., Inc.; US5211738; (1993); A;,
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2436-29-5, 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. 2436-29-5, name is 3-(1,3-Dioxoisoindolin-2-yl)propanal, This compound has unique chemical properties. The synthetic route is as follows.

A vial is charged with bis(l,5-cyclooctadiene)rhodium(I) tetrafluoroborate (0.054 g, 0.132 mmol, 0.10 eq.), l,4-bis(diphenylphosphino)butane (0.056 g, 0.132 mmol, 0.10 eq.), dry DCM (2mL) and sealed with a septum. The flask is evacuated and refilled with (3 times) and the reaction mixture is stirred under an atmosphere of . After 3h, volatiles are removed under a nitrogen stream. The residue is combined with Int 001 (0.397 g, 1.328 mmol, 1 eq.), 3-(l,3-dioxo-l,3-dihydroisoindol-2-yl)- propionaldehyde (0.406 g, 2.00 mmol, 1.5 equiv.) and 1,2-dichloroethane (2 mL) in a vial under a N2 atmosphere. The vial is sealed with a cap and heated at 100C. After 2 days, the mixture is concentrated in vacuo. The residue is purified by flash chromatography on silica gel (eluting with Heptane EtOAc 100/0 to 0/100, then DCM/MeOH 90/10) to afford Int 021. LCMS: MW (calcd): 502; m/z MW (obsd): 502-504 (M+H).

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; GALAPAGOS NV; LES LABORATOIRES SERVIER; BREBION, Franck, Laurent; ALVEY, Luke, Jonathan; AMANTINI, David; DEPREZ, Pierre, Marc, Marie, Joseph; GOSMINI, Romain, Luc, Marie; JARY, Helene, Marie; PEIXOTO, Christophe; VARIN, Marie, Laurence, Claire; DE CEUNINCK, Frederic, Andre; POP-BOTEZ, Iuliana, Ecaterina; (317 pag.)WO2016/102347; (2016); A1;,
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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. 99365-40-9, name is 6-Bromoindolin-2-one belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. 99365-40-9

a) 6-Bromo-1,3,3-trimethylindolin-2-oneUnder an argon atmosphere NaH (60 % on mineral oil, 7.32 g, 183 mmol) was suspended in dry THF (45 ml). A suspension of 6-bromoindolin-2-one (10 g, 45.7 mmol) in dry THF (108 ml) was added in portions during 10 minutes while temperature was kept below 27 C. The reaction mixture was warmed to 25 C and Mel (11.4 ml, 183 mmol) was added dropwise during 1 hour while the internal temperature was carefully kept between 24 and 27 C. The reaction mixturewas stirred at room temperature for 18 hours. Saturated aqueous NT-L1C1 solution (20 ml) was carefully added at 10-15 C. The mixture was diluted with EtOAc, H20 and saturated aqueous NaHCO3 solution. The aqueous phase was extracted with EtOAc, the organic layers were washed with saturated aqueous NaHCO3 solution, combined and dried with Na2504. The solvent was evaporated and the residue was purified by silica gel chromatography using heptane / ethylacetate as eluent. The title compound was obtained as light red solid (7.0 g). Mixed fractions were purified again by preparative HPLC yielding further 3.1 g of the title compound.MS ESI (m/z): 254.1, 256.2 [(M+H)i.1H NMR (CDC13, 300 MHz): oe = 7.19 (dd, J=1.5, 7.8 Hz, 1H), 7.06 (d, J=7.9 Hz, 1H), 6.99 (d, J=1.6 Hz, 1H), 3.19 (s, 3H), 1.35 (s, 6H).

The synthetic route of 99365-40-9 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; HILPERT, Hans; KOLCZEWSKI, Sabine; LIMBERG, Anja; MALBERG, Jessica; PRINSSEN, Eric; RIEMER, Claus; SHANKAR, Bavani G.; STOLL, Theodor; WO2014/202493; (2014); A1;,
Indoline – Wikipedia,
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99365-40-9, 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. 99365-40-9, name is 6-Bromoindolin-2-one, This compound has unique chemical properties. The synthetic route is as follows.

Four microwave vials were loaded as follows: 6-bromoindolin-2-one(500 mg, 2.36 mmol), bis(pinacolato)diboron (898 mg, 3.54 mmol),potassium acetate (694 mg, 7.07 mmol) and Pd(dppf)C12CH2C12 (96.0mg, 0.118 mmol) were dissolved in DME (17 mL). The reaction was heated at 80 C overnight. The content of the four vials was then combined, concentrated and purified bycolumn chromatography (CyHex/EtOAc) to afford the title compound as a white solid (2.27 g, 75%, purity 80%). IH NMR (500 MHz, CDCI3) ppm = 8.57 (bs, IH), 7.48 (d, J7.3, IH), 7.31 (5, 1H), 7.23 (d, J=7.3, IH), 3.55 (s, 2H), 1.33 (s, 12H); LC – MS (ESI, mlz) Rt = 2.75 mm – 260 (M+H) (H PLC method E).

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; MERCK PATENT GMBH; CANCER RESEARCH TECHNOLOGY LIMITED; SCHIEMANN, Kai; STIEBER, Frank; CALDERINI, Michel; BLAGG, Julian; MALLINGER, Aurelie; WAALBOER, Dennis; RINK, Christian; CRUMPLER, Simon Ross; (127 pag.)WO2015/144290; (2015); A1;,
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