Category: 251458-15-8

Adding a certain compound to certain chemical reactions, such as: 251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, belongs to esters-buliding-blocks 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 251458-15-8, Safety of Methyl 2-(3-bromophenyl)-2-methylpropanoate

Methyl 2-(3-bromophenyl)-2-methylpropanoate (Pharmabridge, Doylestown, Pa., USA (190 mg, 0.74 mmol), 4,4,4?,4?,5,5,5?,5?-octamethyl-2,2?-bi(1,3,2-dioxaborolane) (206 mg, 0.81 mmol), [1,1?-bis(diphenylphosphino)ferrocene] dichloropalladium(II), complex with dichloromethane (27 mg, 0.04 mmol) and potassium acetate (217 mg, 2.22 mmol) were placed in a screw cap vial and flushed with a vacuum and argon cycle three times. Anhydrous 1,4-dioxane (4 mL) was added under argon and the resulting mixture was heated to 80 C. for 19 h. The reaction mixture was cool to RT and was diluted with ethyl acetate (20 mL). Celite (1 g) was added and filtered through a pad of celite. Solvents were removed under reduced pressure to afford the title compound which was used directly in the subsequent reaction.

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Reference:
Patent; Gilead Sciences, Inc.; Selcia Limited; Aciro, Caroline; Dean, David Kenneth; Dunbar, Neil Andrew; Highton, Adrian John; Jansa, Petr; Karki, Kapil Kumar; Keats, Andrew John; Lazarides, Linos; Mackman, Richard L.; Pettit, Simon N.; Poullennec, Karine G.; Schrier, Adam James; Siegel, Dustin; Steadman, Victoria Alexandra; (169 pag.)US2017/190737; (2017); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, belongs to esters-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. HPLC of Formula: C11H13BrO2

To a solution of ferf-butyl (4-(4,4,5,5-tetramethyl-1.3,2-dioxaborolan-2-yl)benzyl)carbamate (1.46 g, 4.40 mmol) in 1 .4-dioxane (20 mL) and water (2 mL) was added methyl 2-(3-bromo- phenyl)-2-methylpropanoate (1.13 g, 4.40 mmol), Na2C03(1.20 g, 8.80 mmol) and Pd(dppf)CI2(150 mg) and the mixture was stirred at 90C for 3 h under N2, cooled, diluted with water (40 mL) and extracted with EA (3 x 20 mL). The combined organic layer was washed with brine (30 mL), dried over Na2S04, filtered, concentrated and purified by FCC (PE:EA = 10: 1 ) to give compound 24a as a white solid.

The synthetic route of 251458-15-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PHENEX-FXR GMBH; GEGE, Christian; BIRKEL, Manfred; HAMBRUCH, Eva; DEUSCHLE, Ulrich; KREMOSER, Claus; (203 pag.)WO2019/16269; (2019); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, belongs to esters-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. HPLC of Formula: C11H13BrO2

To a solution of ferf-butyl (4-(4,4,5,5-tetramethyl-1.3,2-dioxaborolan-2-yl)benzyl)carbamate (1.46 g, 4.40 mmol) in 1 .4-dioxane (20 mL) and water (2 mL) was added methyl 2-(3-bromo- phenyl)-2-methylpropanoate (1.13 g, 4.40 mmol), Na2C03(1.20 g, 8.80 mmol) and Pd(dppf)CI2(150 mg) and the mixture was stirred at 90C for 3 h under N2, cooled, diluted with water (40 mL) and extracted with EA (3 x 20 mL). The combined organic layer was washed with brine (30 mL), dried over Na2S04, filtered, concentrated and purified by FCC (PE:EA = 10: 1 ) to give compound 24a as a white solid.

The synthetic route of 251458-15-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PHENEX-FXR GMBH; GEGE, Christian; BIRKEL, Manfred; HAMBRUCH, Eva; DEUSCHLE, Ulrich; KREMOSER, Claus; (203 pag.)WO2019/16269; (2019); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

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. 251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: Methyl 2-(3-bromophenyl)-2-methylpropanoate

A mixture of compound 21 b (319 mg, 0.7 mmol), methyl 2-(3-bromophenyl)-2-methyl- propanoate (203 mg, 0.8 mmol), Pd2(dba)3 (34 mg, 0.1 mmol), X-phos (86 mg, 0.2 mmol) and Cs2C03 (585 mg, 1.8 mmol) in toluene/.e/t-BuOH (30 mlJ5 mL) was heated to 110C overnight under N2. The mixture was cooled, filtered, concentrated and purified by FCC (PE:EA = 10:1) to give compound 21 as a yellow oil.

According to the analysis of related databases, 251458-15-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; PHENEX-FXR GMBH; GEGE, Christian; BIRKEL, Manfred; HAMBRUCH, Eva; DEUSCHLE, Ulrich; KREMOSER, Claus; (133 pag.)WO2018/188795; (2018); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

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. 251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, A new synthetic method of this compound is introduced below., COA of Formula: C11H13BrO2

To a solution of ester from step 1 in THF-MeOH (4: 1,0. 5M) was added LIOH (3 eq, 2M) and the mixture was stirred at 50C for 1h. The organic solvent evaporated, aqueous was acidified with HCl IN and the acid extracted with EtOAc (3X). The organic was washed with brine, dried and solvent evaporated to afford the acid.

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; MERCK FROSST CANADA & CO.; WO2004/48374; (2004); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 251458-15-8, These common heterocyclic compound, 251458-15-8, name is Methyl 2-(3-bromophenyl)-2-methylpropanoate, 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.

INTERMEDIATE 82-(3 -Bromophenyl)-2-methylpropionic acidSodium hydroxide (2M, 20 mL) was added to a solution of Intermediate 7 (6.5 g) in MeOH (20 mL) and THF (20 mL). The resulting mixture was refluxed for 2 h. The mixture was evaporated, and the residue partitioned between water and DCM (100 mL each). The aqueous phase was acidified (2M hydrochloric acid) and extracted with DCM (100 mL then 50 mL). The combined organic phases were dried (MgSO4) and the solvent removed in vacuo to give the title compound (4.55 g, 68% over two steps) as a cream solid. deltaH (CDCl3) 7.54 (s, IH), 7.40 (d, IH), 7.33 (d, IH), 7.21 (t, IH), 1.59 (s, 6H).

The synthetic route of 251458-15-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; UCB PHARMA S.A.; BUeRLI, Roland; HAUGHAN, Alan, Findlay; MACK, Stephen, Robert; PERRY, Benjamin, Garfield; RAPHY, Gilles; SAVILLE-STONES, Elizabeth, Anne; WO2010/52448; (2010); A2;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics