Category: 21883-13-6

Synthetic Route of 21883-13-6, A common heterocyclic compound, 21883-13-6, name is 4-Methoxy-2-methylbenzonitrile, molecular formula is C9H9NO, 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.

Description for D33 4-Hydroxy-2-methylbenzonitrile (D33)To a solution of 2-methyl-4-(methyloxy)benzo?iotat?le (7 g) in anhydrous DCM (100 mL) was added drapwise BBr3 (51 5 g) at -78 C The resulting mixture was allowed to warm to RT and stirred for 24 hours LCMS indicated the reaction was completed Water was added dropwise slowly to quech the reaction. The mixture was extracted with EA (3×100 mL) and the combined organic layer was washed with brine dried over sodium sulfate, and concentrated to give 5 4 g of 4-hydroxy-2-methylbenzo nitrile (D33) as a white solid. deltaH (DMSO-Cf6, 400MHz). 2.45(3H, s), 6.67(1H1 d), 6 69(1H1 d), 7 51(1H, d), 1043(1H1 s). MS (ES) C8H7NO requires 133, found 134 1 (M+ H+)

The synthetic route of 21883-13-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GLAXO GROUP LIMITED; XIANG, Jianing; LIN, Xichen; REN, Feng; DENG, Guanghui; WO2010/148650; (2010); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Related Products of 21883-13-6, 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. 21883-13-6, name is 4-Methoxy-2-methylbenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Compound 235 Isomers; N-(3, 4-difluorophenyl)-3-methyl-L-valyl-(4R)-N-((1R,2S)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)-4-((9-methoxy-4-methyl-3,4-dihydro-2H-[1,4]oxazino[3,2-c]isoquinolin-6-yl)oxy)-L-prolinamide andN-(3, 4-difluorophenyl)-3-methyl-D-valyl-(4R)-N-((1R,2S)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)-4-((9-methoxy-4-methyl-3,4-dihydro-2H-[1,4]oxazino[3,2-c]isoquinolin-6-yl)oxy)-L-prolinamide; Example 235; Preparation of Compounds 235A and 235B; Step 1; 4-methoxy-2-methylbenzonitrile (50 g, 340 mmole) and NBS (62 g, 350 mmole) were suspended in CCl4 (500 ml) and AIBN (5 g, 10% wt) was added. The mixture was heated at flux overnight. Filtered off precipitate and removed the solvent. The brown oil was purified by flash column (2-5% acetone:hexanes). White crystal (36 g) were obtained.

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, 4-Methoxy-2-methylbenzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Bristol-Myers Squibb Company; US2008/119461; (2008); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

21883-13-6, name is 4-Methoxy-2-methylbenzonitrile, belongs to nitriles-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. SDS of cas: 21883-13-6

Example 3 Methyl 3-(4-methoxy-2-methylphenyl)-2-methyl-3-oxopropanoate Methyl 2-bromopropanoate (0.3 mL) was added to anhydrous tetrahydrofuran (100 mL) of zinc powder (11 g) under argon gas atmosphere, followed by refluxing by heat for 15 minutes. 4-methoxy-2-dimethylbenzonitrile (5.0 g) was added to the resultant reaction solution, and further methyl 2-bromopropanoate (15 mL) was dropped thereinto taking 40 minutes, followed by refluxing by heat for 1 hour. The resultant reaction solution was cooled into room temperature, and was diluted with tetrahydrofuran (50 mL) and 50% potassium carbonate solution (30 mL), followed by stirring for 30 minutes. The supernatant of the reaction solution was separated, and concentrated under reduced pressure. The residual was poured to water, and was extracted with ethyl acetate. The extracted solution was washed by a saturated saline solution, and concentrated under reduced pressure after drying with anhydrous magnesium sulfate. Methanol (110 mL) and IN hydrochloric acid (33 ml) were added to the residue, and stirred at room temperature for 15 hours. The resultant reaction solution was concentrated under reduced pressure, was poured to water, and was extracted with ethyl acetate. The extracted solution was washed by a saturated solution of sodium chloride, and concentrated under reduced pressure after drying with anhydrous magnesium sulfate. The obtained residue was purified by silica gel chromatography (hexane:ethyl acetate=100:0?71:29), to thereby obtain a title compound (5.4 g) having the following physical properties. TLC: Rf 0.55 (hexane:ethyl acetate=3:1); 1H-NMR(300 MHz, CDCl3): delta 7.72 (d, J=9.3 Hz, 1H), 6.81-6.73 (m, 2H), 3.85 (s, 3H), 3.68 (d, J=0.6 Hz, 3H), 2.54 (s, 3H), 1.56 (d, J=0.6 Hz, 3H), 1.45 (dd, J=7.2, 0.3 Hz, 3H).

The synthetic route of 21883-13-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ONO PHARMACEUTICAL CO., LTD.; EP1961754; (2008); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

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 21883-13-6 as follows. name: 4-Methoxy-2-methylbenzonitrile

Decanethiol (261 mg, 1.5 mmol) and t-BuOK (168 mg, 1.5 mmol) were added to a solution of 4-methoxy-2-methylbenzonitrile (147 mg, 1 mmol) in DMF (5 mL). The reaction mixture was stirred at 110 C for 3 h. The mixture was then diluted with water (30 mL) and extracted with EtOAc (10 mL x 3). The extracts were washed with brine (10 mL x 3), dried over Na2SO4, and concentrated under reduced pressure. The resulting residue was purified by silica gel column with (petroleum ether:EtOAc = 10:1) to provide 4-hydroxy-2-methylbenzonitrile (70 mg, yield: 52.6%). LC-MS (011): 134.70 [M+H]+; Rt: 1.44 min, Purity: 80% (254 nm).

According to the analysis of related databases, 21883-13-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; TEMPERO PHARMACEUTICALS, INC.; BALOGLU, Erkan; GHOSH, Shomir; LOBERA, Mercedes; SCHMIDT, Darby, R.; WO2013/19621; (2013); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts