Indolines-derivatives

Synthetic Route of 25128-35-2, 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. 25128-35-2, name is 2,3-Dioxoindoline-7-carboxylic acid, This compound has unique chemical properties. The synthetic route is as follows.

(1) Preparation of methyl 7-indolo[2,3-b]quinoxalinecarboxylate A suspension of 3.96 g of 1,2-phenylenediamine and 7.00 g of 7-isatincarboxylic acid in 70 ml of acetic acid was heated under reflux for an hour. After completion of the reaction, the reaction solution was allowed to cool to room temperature, followed by addition of water, and resulting precipitate was collected by filtration. The thus obtained 7-indolo[2,3-b]quinolinecarboxylic acid and 170 ml of thionyl chloride were refluxed for 2 hours, and the excess thionyl chloride was evaporated. The residue, after addition of 250 ml of methanol, was stirred overnight. After addition of water, the resulting precipitate was collected by filtration, and purified by silica gel column chromatography to give methyl 7-indolo[2,3-b]quinoxalinecarboxylate. m.p. 251-255 C. Yield 4.04 g.

The chemical industry reduces the impact on the environment during synthesis 2,3-Dioxoindoline-7-carboxylic acid. I believe this compound will play a more active role in future production and life.

Related Products of 304876-29-7, A common heterocyclic compound, 304876-29-7, name is 2′,3′,5′,6′-Tetrahydrospiro[indoline-3,4′-pyran]-2-one, molecular formula is C12H13NO2, 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.

Sodium hydride (8.00 mg of a 60% dispersion in mineral oil, 0.207 mmol) was added to a solution of 2′,3′,5′,6I-tetrahydrospiro[indole-3,4′-pyran]-2(lH)-one from Step A (35.0 mg, 0.172 mmol) in DMF (1 mL) at 0 0C. After 1 hr, tert-butyl bromoacetate (0.280 mL, 0.189 mmol) was added and the reaction warmed to ambient temperature. After 18 h, the reaction was partitioned between CH2Cl2 (10 mL) and saturated NH4CI (10 mL). The organic layer was dried over Na2SO4, filtered, and concentrated in vacuo to give the title compound. MS: m/z = 318 (M + 1).

The synthetic route of 304876-29-7 has been constantly updated, and we look forward to future research findings.

Application of 1677-47-0,Some common heterocyclic compound, 1677-47-0, name is 4,5-Dichloroisatin, molecular formula is C8H3Cl2NO2, 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.

5,6-Dichloroanthranilic Acid This material was obtained from 4,5-dichloroisatin in 91% yield by the method of B. R. Baker, et al., J. Org. Chem., 17, 141 (1952).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4,5-Dichloroisatin, its application will become more common.

Electric Literature of 161596-47-0, 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 161596-47-0 as follows.

[0048] (S)-2-(oxiran-2-ylmethyl)isoindoline-1,3-dione (3.87 g, 19.06 mmol, 1.1 eq.) and 4-(4-isocyanatophenyl)morpholin-3-one (3.77 g, 17.29 mmol) were dissolved in chlorobenzene (70 mL) respectively, then heated to 115 C. and lithium iodide (0.23 g, 1.72 mmol) was added. The mixture was reacted for 4 h, white solid was obtained by filtration (6.85 g, yield: 94.09%). [0049] ESI-MS (m/z): 422 (M+H), 444 (M+Na); [0050] 1HNMR (400 MHz, CDCl3) delta: 3.74 (m, 2H), 3.94 (m, 4H), 4.10 (m, 2H), 4.32 (s, 2H), 4.98 (m, 1H), 7.34 (d, 2H), 7.56 (d, 2H), 7.75 (m, 2H), 7.88 (m, 2H); [0051] HPLC: 98.91%.

According to the analysis of related databases, 161596-47-0, the application of this compound in the production field has become more and more popular.

Application of 162100-55-2, These common heterocyclic compound, 162100-55-2, name is 5-(Trifluoromethyl)indoline, 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 2 1-[2-(Pyridin-2-ylmethyloxy)pyridin-5-ylcarbamoyl]-5trifluoromethylindoline E2) Phenyl N-[2-(pyridin-2-ylmethyloxy)pyridin-5-yl] carbamate (D3, 0.20 g, 0.62 mmol) in dry dimethylformamide (10 ml) was treated with 5-trifluoromethylindoline (D6, 0.12 g, 0.62 mmol) and heated at 100 C. for 1 hour. After cooling to ambient temperature, the solvent was removed in vacuo. The residue was dissolved in dichloromethane, washed with 10% aqueous sodium hydroxide solution, dried (Na2SO4) and evaporated in vacuo. The resulting oil was chromatographed on silica gel eluding with 2% methanol/dichloromethane and triturated with diethyl ether to afford the title compound (0.08 g, 31%) as an off-white solid. 1H NMR (250 MHz; d6DMSO) delta (ppm): 3.28 (2H, t, J=10), 4.19 (2H, t, J=10), 5.40 (2H, s), 6.94 (1H, d, J=10), 7.28-7.37 (1H, m), 7.40-7.58 (3H, m), 7.82 (1H, dt, J=2,7), 7.90 (1H, dd, 3=2,7), 8.00 (1H, d, J=10), 8.26 (1H, d, J=3), 8.56 (1H, d, J=7), 8.75 (1H, s).

The synthetic route of 162100-55-2 has been constantly updated, and we look forward to future research findings.

Adding a certain compound to certain chemical reactions, such as: 20870-91-1, name is 5-Amino-1-methyl-2-oxoindoline, 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 20870-91-1, Safety of 5-Amino-1-methyl-2-oxoindoline

Step 4: Preparation of (5R)-2-hydroxy-3-(1-methyl-2-oxo-2,3-dihydro-1H-indol-5-ylamino)-propionic acid methyl ester 5-Amino-1-methyl-1,3-dihydro-indol-2-one (Step 3, 1.40 g, 8.63 mmol), methyl (2R)-glycidate (0.882 g, 8.63 mmol), and lithium trifluoromethanesulfonate (1.33 g, 8.63 mmol) in acetonitrile (15 ml) are heated at 70 C. for 4 hours. The reaction mixture is diluted with ethyl acetate, washed with water and brine, dried (Na2SO4) and evaporated. The residue is purified by flash chromatography (70% EtOAc/Hexane) to give the title compound as a light brown solid. HPLC r.t. 2.44 min; MS for C13H16N2O4 m/z 265.0(M+H)+.

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Adding a certain compound to certain chemical reactions, such as: 20870-91-1, name is 5-Amino-1-methyl-2-oxoindoline, 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 20870-91-1, Computed Properties of C9H10N2O

Step 4; Preparation of (R)-[2-hydroxy-3-(1-methyl-2-oxo-2,3-dihydro-1H-indol-5-ylamino)-propyl]-carbamic acid tert-butyl ester; 5-Amino-1-methyl-1,3-dihydro-indol-2-one (1.20 g, 7.40 mmol), (S)-oxiranylmethyl-carbamic acid tert-butyl ester (1.28 g, 7.40 mmol) and lithium trifluoromethanesulfonate (1.14 g, 7.398 mmol) in acetonitrile (10 ml) are heated at 70 C. for 1 hour. The reaction mixture is diluted with ethyl acetate, washed with water and brine, dried (Na2SO4) and evaporated. The residue is purified by flash column chromatography (70% EtOAc/Hexane) to give the title compound as a light brown solid. HPLC r.t. 3.20 min; MS for C17H25N3O4 m/z 336.4(M+H)+.

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-Amino-1-methyl-2-oxoindoline, other downstream synthetic routes, hurry up and to see.

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. 39603-24-2, name is 5,7-Dimethylindoline-2,3-dione belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. Product Details of 39603-24-2

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.

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

Synthetic Route of 41663-84-7,Some common heterocyclic compound, 41663-84-7, name is 2-Methyl-5-nitroisoindoline-1,3-dione, molecular formula is C9H6N2O4, 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.

In the homogeneous mixing of three reaction bottle, under the protection of nitrogen at room temperature by adding 300 mL of dimethylsulfoxide (moisture <500ppm). Then, 150 g of N-methyl-4-nitrophthalimide and 169 g of sodium phenolate were added, Heated to 120 C for 24 hours. Cooled to room temperature, The reaction solution was slowly added to 900 mL of ice water in China, Stirring for 30 minutes, filtering, filter cake with water 150mL * 3 washing, filter cake out to get the product 171g, the yield of 93%, HPLC purity of 98% These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Methyl-5-nitroisoindoline-1,3-dione, its application will become more common.

Application of 954255-04-0,Some common heterocyclic compound, 954255-04-0, name is 5,6-Difluoroindoline, molecular formula is C8H7F2N, 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.

5,6-difluoro-indoline 0.40g (2.58mmol),3,5-dimethoxybromobenzene 0.58 g (2.71 mmol),3% molar amount of Pd(OAc) 2 (17 mg),6% molar amount of P(t-Bu)3.HBF4 (45 mg),Sodium tert-butoxide (0.50 g, 5.16 mmol) was added to 40 mL of toluene.Heating at 110 C for 12 h,filter,The filtrate is depressurized to remove the solvent.Column chromatography (PE: CH2Cl2 = 5:1) gave 0.45 g of white crystals.The yield was 60%.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5,6-Difluoroindoline, its application will become more common.