Month: April 2021

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. 60434-13-1, name is 5-Chloro-1-methylindoline-2,3-dione, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 60434-13-1

General procedure: A solution of N-methylisatin (322 mg, 2.0 mmol), indole (258 mg, 2.2 mmol), and K2CO3 (138 mg, 1.0 mmol) in aqueous DMF (H2O/DMF, 2:1, 5.0 mL) was heated to 50 oC for 3 h. After aqueous extractive workup and column chromatographic purification process (n-hexane/EtOAc, 1:1), 3-hydroxy-3-(1H-indol-3-yl)-1-methylindolin-2-one (1m) was obtained as a white solid, 340 mg (61%).1 To a stirred solution of 1m (278 mg, 1.0 mmol) in DMF (3.0 mL) was added t-BuOK (125 mg, 1.1 mmol) and iodomethane (158 mg, 1.1 mmol) successively at 0 oC. The reaction mixture was stirred at room temperature for 2 h. After aqueous extractive workup and column chromatographic purification process (n-hexane/EtOAc, 3:1), compound 1a was obtained as a white solid, 185 mg (63%).

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 60434-13-1.

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. 19727-83-4, name is 6-Nitroindoline, A new synthetic method of this compound is introduced below., Computed Properties of C8H8N2O2

PREPARATION 5 1-(3-Chloropropionyl)6-nitroindoline 8.2 g (50 mmol) of 6-nitroindoline (prepared as described in Preparation 4) were dissolved in 100 ml of acetone, and 6.35 g (50 mmol) of 3-chloropropionyl chloride were added to the solution while ice-cooling, which resulted in the reaction mixture becoming a suspension. This suspension was stirred at room temperature for 1 hour, after which it was heated under reflux for 2 hours, and formed a solution. The resulting solution was cooled to room temperature, and then 10% w/v aqueous hydrochloric acid was added, and the precipitated crystals were collected by filtration. The crystals thus obtained were dried over phosphorous pentoxide in a desiccator under reduced pressure by means of a vacuum pump overnight to obtain 12.7 g (50 mmol) of the title compound as crystals, melting at 127-128 C. (yield: 100%). 1 H Nuclear Magnetic Resonance (200 MHz, CDCl3) delta ppm: 2.95 (2H, triplet, J=6.7 Hz); 3.32 (2H, triplet, J=8.6 Hz); 3.93 (2H, triplet, J=6.7 Hz); 4.22 (2H, triplet, J=8.6 Hz); 7.30 (1H, doublet, J=8.2 Hz); 7.93 (1H, doublet of doublets, J=2.0 & 8.2 Hz); 9.03 (1H, doublet, J=2.0 Hz). Mass Spectrum (m/z): 254 (M+), 218, 164, 118.

The synthetic route of 19727-83-4 has been constantly updated, and we look forward to future research findings.

Application of 1504-06-9, The chemical industry reduces the impact on the environment during synthesis 1504-06-9, name is 3-Methyloxindole, I believe this compound will play a more active role in future production and life.

-Methyloxindole (1.5 g, 10.2 mmol) and lithium chloride (1.26 g, 30 mmol) was dissolved in THF (100 mL). The solution was then cooled to -78 C. and n-butyllithium (4.2 mL, 2.5 M in hexanes, 10.5 mmol) was added slowly over a 15 minute period. Ethyl iodide (4.16 mL, 50 mmol) was added and the mixture was allowed to warm to room temperature. After 24 hours, the mixture was poured into water and extracted with ethyl acetate, dried over magnesium sulfate, and concentrated in vacuo. Flash chromatography (SiO2, Hexane/ethylacetate 9/1 then 8/2) gave 3-ethyl-3-methyl-1,3-dihydro-2H-indol-2-one (0.750 g, 25%): HRMS [M+H]+176.1076

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

These common heterocyclic compound, 15861-23-1, name is Indoline-5-carbonitrile, 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. COA of Formula: C9H8N2

To a solution of indoline-5-carbonitrile (1 10 mg, 0.75 mmol) in 2.5 mL of MeOH was added tert-butyl 3-oxopyrrolidine-l-carboxylate (166 mg, 0.90 mmol) and HO Ac (0.1 1 mL, 1.88 mmol) subsequently. After stirring at room temperature for 10 minutes, NaCNBH3 (57 mg, 0.90 mmol) was added and the mixture was then stirred at ambient temperature for 2 days. The volatiles were removed under vacuum. The residue was diluted with EtOAc, then washed with 1 N NaOH solution and brine, dried over Na2S04, and evaporated in vacuo to afford the crude title compound for the next step use without further purification.

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

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. 15362-40-0, name is 1-(2,6-Dichlorophenyl)-2-indolinone, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 15362-40-0

Step 1: Synthesis of [2-(2,6-Dichloro-phenylamino)-phenyl]-acetic acid] (2) To a stirred solution of 1-(2,6-Dichloro-phenyl)-1,3-dihydro-indol-2-one 1 (10 g, 0.03 mol) in toluene (340 mL) was added aq. NaOH (2N, 34 mL)) at rt. The resulting mixture was stirred at 90 C. for 16 h. After completion, clear solution was cooled in an ice bath and acidified with con. HCl. The precipitated solid was filtered, washed with ethanol and dried under reduced pressure to get 9.0 g (84.4% yield) of Compound 2 as an off white solid. Used in the next step without any further purification; Mass: 294.1 (M-H); 1H-NMR (400 MHz, DMSO): 12.70 (s, 1H), 7.53-7.51 (d, J=8.0 Hz, 2H), 7.24-7.16 (m, 3H), 7.08-7.03 (m, 1H), 6.87-6.83 (m, 1H), 6.28-6.26 (d, J=7.8 Hz, 1H), 3.69 (s, 2H); 13C-NMR (400 MHz; DMSO): 173.86, 142.66, 137.11, 130.89, 130.04, 129.17, 127.51, 125.56, 123.89, 120.76, 115.95, 37.74.

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 15362-40-0.

Electric Literature of 2058-72-2, 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.

Representative experimental procedure for Phospho-Aldol reaction: In a typical experiment, Catalyst 1h (0.04 mmol) was added to a stirred solution of 1-methylisatin 2a (2.0 mmol) in CH2Cl2 (3 mL) at 0 C under an atmosphere of air. The resulting solution was magnetically stirred for 10 min prior to the addition of pre-cooled (0 C) Diphenyl phosphite 3a (0.40 mmol). After stirring for the indicated reaction time at 0 C (monitored by TLC), the crude adduct 4a was purified by column chromatography (petroleum ether/ethyl acetate, 3:1). The enantiomeric excess of the pure product was determined by chiral HPLC analysis on chiralpak AS-H.

Statistics shows that 5-Bromo-1-methylindoline-2,3-dione is playing an increasingly important role. we look forward to future research findings about 2058-72-2.

These common heterocyclic compound, 7147-90-2, name is 5-Chloroisoindoline-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. COA of Formula: C8H4ClNO2

General procedure: (0.107) Intermediate 4 (0.001 mol) was dissolved in 15 ml of N ‘N-dimethylformamide solution, anhydrous potassium carbonate (0.00 mol) was added, methyl iodide (0.0015 mol) or benzyl chloride (0.0015 mol)The mixture was stirred at room temperature for 5 hours. The filtrate was distilled off and the solvent was distilled off, and the residue was recrystallized from methanol to give the intermediate compound 17. 17a: pale yellow solid, yield 72.4%

The synthetic route of 5-Chloroisoindoline-1,3-dione has been constantly updated, and we look forward to future research findings.

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. 446292-08-6, name is (S)-2-((2-Oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)isoindoline-1,3-dione, This compound has unique chemical properties. The synthetic route is as follows., Safety of (S)-2-((2-Oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)isoindoline-1,3-dione

2-({(5S) -2-oxo-3-[4- (3-oxo-4-morpholinyl) phenyl] -1,3-oxazolidin-5- yl} methyl)-1,3(2H) -dione (Formula 5) were added 75 ml of ethanol and 8.1 ml of a methylamine solution (concentration in water 40%) was added.The reaction mixture was then diluted with 60In Heating, Stir at this temperature for 2 hours.Confirm that the reaction is completed, and while maintaining the temperature, dilute the solution with 50 ml of ethanol and 3.04 ml of phosphoric acid, and slowly add the solution to the reaction solution. After confirming that the crystallization of the product was initiated and cooling to 20 C, the precipitated reaction product was filtered under suction. The resulting solid was dispersed in 110 ml of methanol, refluxed for 30 minutes and stirred, and then cooled to room temperature. The resulting crystals were filtered,And dried at 50 DEG C for 4 hours to obtain 11.1 g of morpholine diphosphate (Formula 2). (Yield: 96.0%)

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 446292-08-6.

Electric Literature of 17702-83-9, 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 17702-83-9 as follows.

A mixture of compound 54 (0.85 g, 5.62 mmol), Na2CO3 (0.95 g, 8.99 mmol), and compound 3 (2.16 g, 6.39 mmol) in CH3CN (40 ml) was sirred under reflux for 48 h, cooled, and poured onto ice-water (300 ml). The mixture was extracted with CH2CI2 (3 x 100 ml), the combined extracts were dried (Na2SO4), and concentrated. The residue was purified by column chromatography (petroleum ether-EtOAc (5: 1)) to afford a 2: 1 mixture of the title compound 55 with the starting amine 54 as a colourless oil which was used in the next step without further purification. 1H-NMR (200 MHz, CDCI3, HMDSO): delta 1.15 (t, J=7.1 Hz, 3H); 1.22-1.41 (m, 8H); 1.47-1.76 (m, 4H); 2.74 (q, 3=1.1 Hz, 2H); 3.67 (t, 3=1.1 Hz, 2H); 4.69 (s, 2H); 7.23-7.39 (m, 5H), 7.64-7.75 (m, 2H); 7.78-7.88 (m, 2H).

According to the analysis of related databases, 17702-83-9, the application of this compound in the production field has become more and more popular.

Synthetic Route of 496-12-8, The chemical industry reduces the impact on the environment during synthesis 496-12-8, name is Isoindoline, I believe this compound will play a more active role in future production and life.

Step 1: Boc-4-Oxo-proline methyl ester (100 mg, 0.41 mmol) and isoindoline (51 pL, 0.43 mmol) were dissolved in DCE (1 .5 mL) and acetic acid (25 pL, 0.41 mmol) added. After 1 hour, NaBH(OAc)3 (261 mg, 1 .23 mmol) was added and the reaction mixture stirred at room temperature overnight. The reaction mixture was diluted with sat. aq. NaHCO3 and extracted with DCM. The combined organics were passed through a phase separator and the solvent removed to give acrude product which was purified by column chromatography (Biotage, 1 Og SNAP, 0-80% EtOAc/ihexane) to give (25,4R)-4-(1 ,3-dihydro-isoindol-2-yl)-pyrrolidine-1 ,2-dicarboxylic acid 1-tert- butyl ester 2-methyl ester (0.1 3g, 92%) as a brown oil.AnalpH2_MeOH_4MIN: Rt: 1.99 mi mlz 347.3 [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, Isoindoline, other downstream synthetic routes, hurry up and to see.