Month: April 2021

Related Products of 3416-57-7, 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. 3416-57-7, name is 2-(2-Oxopropyl)isoindoline-1,3-dione, This compound has unique chemical properties. The synthetic route is as follows.

5.4. Example 4; To a solution of powdered LiOH (17.25 g, 1.5 eq) in anhydrous methanol (600 ml) was added cyanoacetamide (63 g, 1.5 eq) under nitrogen atmosphere. The resulting mixture was stirred for 20 min at room temperature. To this was added a solution of phthalimidoacetone (101.5 g, 0.5 mol) in 700 ml of THF (anhydrous) over a period of 30 min. Resulting reaction mixture was stirred for 2 h at room temperature and then heated at 55 C. for 1 h. To this was added sodium methoxide solution (25% solution, 172 ml, 1.5 eq) at 55 C. over a period of 40 min. After 3 h HPLC/MS indicated starting material and intermediates were converted to 2-amino-4-methyl-1H-pyrrole-3-carboxamide. To this reaction mixture was added ethyl formate (200.8 ml, 5 eq) over a period of 20 min followed by sodium methoxide (25% solution, 324 g, 3 eq). The resulting reaction mixture was heated for 7 h at 55 C. at which time HPLC/MS indicated that the intermediate pyrrole compound was converted to the final product. The reaction mixture was diluted with 1.5 L water, heated at 60 C. for 1 h, and then concentrated to small volume (11.5 L). Solution assay indicated that final product was formed in 75% solution yield. This solution was acidified to pH 7.5 with 6 N aq. HCl, cooled to about 5 C., and held at this temperature for 30 min. The solid was filtered, washed with water, dried at 50 C. under vacuum overnight to give the final product as a light brown solid (45.8 g, 61% yield, purity: 99.0% by HPLC area).

The chemical industry reduces the impact on the environment during synthesis 2-(2-Oxopropyl)isoindoline-1,3-dione. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Bednarz, Mark S.; Kanamarlapudi, Ramanaiah C.; Wu, Wenxue; US2008/97098; (2008); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Application of 2307-00-8, These common heterocyclic compound, 2307-00-8, name is 5-Amino-2-methylisoindoline-1,3-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.

4-N-Ethylamino-N-methylphthalimide (5) A mixture of 10 g (0.057 mol) of 4-amino-N-methylphthalimide (4) [Flitsch, Chem. Ber. 94:2494(1961)], 17.5 g (0.11 mol) of diethyl sulfate, and 100 ml of 2,2,2-trifluoroethanol was refluxed for one day. The reaction mixture was cooled, concentrated under reduced pressure, and the residue partitioned between 250 ml of ethyl acetate and 100 ml of saturated sodium bicarbonate solution containing 10 ml of triethylamine. The ethyl acetate phase was separated, washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, filtered, and evaporated. The residue was recrystallized twice from acetone-hexane and then from aqueous methanol to give 3.4 g (29% yield) of the phthalimide (5) as fine yellow crystals, m.p. 157 C. Analysis: Calculated for C11 H12 N2 O2: C, 64.69; H, 5.92; N, 13.71; Found: C, 64.00; H, 5.71; N, 13.37. NMR Spectrum (C5 D5 N): delta 0.5 (t, J=7 Hz, 3H), 2.1 (s, 3H)

The synthetic route of 2307-00-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Miles Laboratories, Inc.; US4363759; (1982); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Related Products of 5428-09-1, These common heterocyclic compound, 5428-09-1, name is 2-Allylisoindoline-1,3-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.

General procedure: An oven-dried, two-necked round-bottom flask containing a stir bar was charged with an aryl bromide 1 (1.0 mmol), Pd(OAc)2 (6.8 mg, 0.03 mmol), K2CO3 (165.9 mg, 1.2 mmol), HQ (15.6 mg, 0.1 mmol), allylamine (1.2 mmol), and DMF (3.0 ml) under nitrogen at room temperature. Following degassing three times, the flask was placed in an oil bath, and the mixture was stirred and heated at the appropriate temperature. After an appropriate reaction time, the flask was removed from the oil bath and cooled to room temperature. Water (20 ml) was added, and the mixture was extracted with CH2Cl2 (3.x.20 ml). The combined organic layer was washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. The product was purified by flash column chromatography on silica gel using ethyl acetate/hexane as an eluent.

Statistics shows that 2-Allylisoindoline-1,3-dione is playing an increasingly important role. we look forward to future research findings about 5428-09-1.

Reference:
Article; Jiang, Zhen; Zhang, Lingjuan; Dong, Chaonan; Ma, Baode; Tang, Weijun; Xu, Lijin; Fan, Qinghua; Xiao, Jianliang; Tetrahedron; vol. 68; 24; (2012); p. 4919 – 4926;,
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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. 261732-38-1, name is tert-Butyl 5-bromoindoline-1-carboxylate, A new synthetic method of this compound is introduced below., Recommanded Product: 261732-38-1

A solution of 5-bromo-2,3-dihydro-indole-1-carboxylic acid tert-butyl ester (4. 0 g, 13.5 mmol), tributylamine and bis-triphenylphosphinopalladium(II) chloride (0.65 g, 0.926 mmol) in methanol was sealed in a Parr pressure apparatus and pressurized with 600 psi of carbon monoxide. The solution was heated at 100 C for one week. The vessel was cooled to room temperature and the gas vented. The solution was filtered, and the solvent was evaporated in vacuo. The residue was purified by flash chromatography, on silica gel eluted with 10-40% ethyl acetate in hexane to give the product mixed with tributylamine, 2.5 g (67%). The product was used without further purification in the subsequent step.

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; JANSSEN PHARMACEUTICA N.V.; WO2004/69792; (2004); A2;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Related Products of 102359-00-2, 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 102359-00-2 as follows.

EXAMPLE 43 5-Carboxyoxindol (0.93 g) and 0.8 ml of trimethylamine were suspended in 10 ml of tetrahydrofuran (THF), and a solution of 1.0 g of diethylchlorophosphate in 10 ml of THF was added dropwise thereto at room temperature with stirring. The mixture was stirred for 3 hours at room temperature. To the mixture was added dropwise a solution of 1.1 g of benzylpiperazine in 10 ml of THF and was further stirred for 10 hours at room temperature. After completion of reaction, crystals which precipitated were filtered off and the filtrate was concentrated. To the residue was added a saturated aqueous solution of sodium hydrogencarbonate and the mixture was extracted with chloroform. Organic layer was washed with water and a saturated saline solution, dried over anhydrous sodium sulfate, and the solvent was distilled off. Recrystallization of the residue from isopropyl alcohol gave 1.01 g of 5-(4-benzyl-1-piperazinylcarbonyl)oxindol. m.p.: 151-153 C.

According to the analysis of related databases, 102359-00-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Otsuka Pharmaceutical Co., Ltd.; US4737501; (1988); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Some common heterocyclic compound, 317-20-4, name is 7-Fluoroisatin, molecular formula is C8H4FNO2, 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: C8H4FNO2

General procedure: Sulfonated-beta-cyclodextrin (beta-CD-SO3H) (76 mg, 0.06 mmol) was dissolved in water (5 mL) at RT by stirring to get the clear solution in 50 mL round bottom ask. Further, isatin 2 (0.31 mmol) and tryptamine 1a/isotryptamine 1b (0.31 mmol) were added to the solution under constant stirring and mixture was heated at 80 C for 8-12 h. The progress of the reaction was monitored by TLC. After completion of reaction, it was cooled to room temperature, water was added to it. The aqueous phase was extracted with ethylacetate. The organic extracts were combined, washed with brine and dried over sodium sulfate. The solvent was evaporated in vacuo and the crude product obtained was puried by column chromatography using chloroform/methanol (99:1) as an eluent furnishing the product. The spectral and analytical data of all the reported products is consistent with the previous (6c,d,f) reports.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 317-20-4, its application will become more common.

Reference:
Article; Urmode, Tukaram D.; Dawange, Monali A.; Shinde, Vaishali S.; Kusurkar, Radhika S.; Tetrahedron; vol. 73; 30; (2017); p. 4348 – 4354;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Synthetic Route of 39603-24-2,Some common heterocyclic compound, 39603-24-2, name is 5,7-Dimethylindoline-2,3-dione, molecular formula is C10H9NO2, 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: A mixture of isatins 1a-g (1 mmoL) with an equimolar amount of N,N’-diphenyl/(p-tolyl)thiourea2a,b (1 mmoL) and bromoacetic acid 3 (0.14 g, 1 mmoL) in glacial acetic acid (10 mL) in the presenceof sodium acetate (0.16 gm, 2 mmoL), was heated under reflux for 3 h. The formed solid was filteredoff while hot, washed with hot ethanol, dried and recrystallized from DMF to furnish the targethybrids 4a-n.

The synthetic route of 39603-24-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; El-Naggar, Mohamed; Eldehna, Wagdy M.; Almahli, Hadia; Elgez, Amr; Fares, Mohamed; Elaasser, Mahmoud M.; Abdel-Aziz, Hatem A.; Molecules; vol. 23; 6; (2018);,
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. 959235-95-1, name is 6-(Trifluoromethoxy)indoline, A new synthetic method of this compound is introduced below., COA of Formula: C9H8F3NO

A mixture of 6-(trifluoromethoxy)indoline [CAS 959235-95-1 ] (2.5 g, 12.3 mmol), 2-(4-chloro-2-methoxyphenyl)acetic acid [CAS 170737-95-8] (2.47 g, 12.3 mmol), HATU (7 g, 18.5 mmol) and diisopropylethylamine (6.1 mL, 36.9 mmol) in DMF (40-mL) was stirred at room temperature for 4 h. Water and EtOAc were added. The organic layer was separated, washed with water, dried over MgSO4, filtered and the solvent was evaporated under reduced pressure. The residue was purified by chromatography on silica gel (15-40 muiotatauiota, 80 g, heptane/EtOAc 85/15). The pure fractions were combined and the solvent was concentrated under reduced pressure to give, after crystallization from CH3CN/heptane, 2-(4-chloro-2- methoxyphenyl)-1 -(6-(trifluoromethoxy)indolin-1 -yl)ethanone 8a (4.3 g).

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; JANSSEN PHARMACEUTICALS, INC.; KATHOLIEKE UNIVERSITEIT LEUVEN; KESTELEYN, Bart Rudolf Romanie; RABOISSON, Pierre Jean-Marie Bernard; BONFANTI, Jean-Francois; BARDIOT, Dorothee Alice Marie-Eve; MARCHAND, Arnaud Didier M; (74 pag.)WO2017/167951; (2017); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Reference of 39603-24-2, A common heterocyclic compound, 39603-24-2, name is 5,7-Dimethylindoline-2,3-dione, molecular formula is C10H9NO2, 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.

General procedure: To a stirred solution of the appropriate indolin-2,3-dione derivative1a-f (1 mmol) in absolute ethyl alcohol (10 mL), 4-(2-aminoethyl)benzenesulfonamide 2 (0.2 gm, 1 mmol) and catalyticamount of glacial acetic acid were added. After refluxing for 2 h, theformed precipitate was collected by filtration while hot, washedwith methanol, dried and crystallized from ethanol to furnishcompounds 3a-f with 62e75% yield.

The synthetic route of 39603-24-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Eldehna, Wagdy M.; Al-Ansary, Ghada H.; Bua, Silvia; Nocentini, Alessio; Gratteri, Paola; Altoukhy, Ayman; Ghabbour, Hazem; Ahmed, Hanaa Y.; Supuran, Claudiu T.; European Journal of Medicinal Chemistry; vol. 127; (2017); p. 521 – 530;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem

Application of 603-62-3,Some common heterocyclic compound, 603-62-3, name is 3-Nitrophthalimide, molecular formula is C8H4N2O4, 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.

To a solution of potassium hydroxide (16.1 g, 286 mmol) in water (500 mL), was added 3-nitrophthalimide (25.0 g, 130 mmol) in portion at 0 C. The suspension was stirred at 0 C for 3 hrs, and then heated to 30 C for 3 hrs. To the solution, was added HC1 (100 mL, 6N). The resulting suspension was cooled to 0 C for 1 hr. The suspension was filtered and washed with cold water (2 x 10 mL) to give 3-nitro-phthalamic acid as a white solid (24.6 g, 90% yield): 1H NMR (DMSO-d6) delta 7.69 (brs, 1H, NHH), 7.74 (t, J = 8 Hz, 1H, Ar), 7.92 (dd, J= 1, 8 Hz, 1H, Ar), 8.13 (dd, J= 1, 8 Hz, 1H, Ar), 8.15 (brs, 1H, NHH), 13.59 (s, 1Eta, OH); 13C NMR (DMSO-de) Patent; CELGENE CORPORATON; HAGNER, Patrick; GANDHI, Anita; CHOPRA, Rajesh; KLIPPEL, Anke; (202 pag.)WO2016/60702; (2016); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem