Category: 697762-67-7

Application of 697762-67-7, 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. 697762-67-7, name is Methyl 5-bromo-2-chloro-3-methoxybenzoate belongs to esters-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

To a solution of 20 methyl 5-bromo-2-chloro-3-methoxybenzoate (25.0 g, 89.4 mmol) in 13 THF (100 mL), 21 H2O (100 mL) and MeOH (100 mL) was added aq. 5 N 26 NaOH solution dropwise at 0 C. The mixture was stirred at room temperature for 1 hour. 24 conc. HCl was added to the mixture to acidify and the mixture was extracted with EtOAc (500 mL×2). The combined organic layers were dried over MgSO4, filtered and concentrated in vacuo to afford the 27 title compound (22.6 g, 96%) as an orange solid. 1H NMR (400 MHz, CDCl3) delta 7.55 (s, 1H), 7.13 (s, 1H), 3.89 (s, 3H); [M+H]+ 265.

The synthetic route of Methyl 5-bromo-2-chloro-3-methoxybenzoate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; DAEWOONG PHARMACEUTICAL CO., LTD.; GREEN CROSS CORPORATION; YOON, Hee-kyoon; PARK, Se-Hwan; YOON, Ji-Sung; CHOI, Soongyu; SEO, Hee Jeong; PARK, Eun-Jung; KONG, Younggyu; SONG, Kwang-Seop; KIM, Min Ju; PARK, So Ok; (55 pag.)US2019/169174; (2019); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Application of 697762-67-7,Some common heterocyclic compound, 697762-67-7, name is Methyl 5-bromo-2-chloro-3-methoxybenzoate, molecular formula is C9H8BrClO3, 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.

The compound (74.80 g, 0.27 mol) obtained in Step 4 was dissolved in dichloromethane (300 ml) and 1M boran tribromide/dichloromethane solution (700 ml, 0.70 mol) was added dropwise at 10C or below. After completion of the addition, the mixture was stirred at room temperature for 1.5 hrs. The reaction mixture was added to ice water (1500 ml) and the precipitated solid was collected by filtration. The filtrate was partitioned, and the aqueous layer was extracted with ethyl acetate (200 ml). The organic layers were combined and concentrated under reduced pressure. The solid collected by filtration and the residue were dissolved in diethyl ether (1000 ml) and 1N aqueous sodium hydroxide solution (1000 ml) was added for extraction. 2N Hydrochloric acid (500 ml) was added to the aqueous layer. The mixture was stirred and extracted with ethyl acetate (800 ml). The mixture was partitioned and the organic layer was washed successively with water and saturated brine, dried over sodium sulfate, filtered, and concentrated under reduced pressure to give an object product (63.83 g, yield 95%) as a beige solid.1H NMR(DMSO-d6 300MHz) (delta) ppm: 7.23 (1H, d, J=2.4Hz), 7.28 (1H, d, J=2.4Hz), 10.99(1H, s), 13.55 (1H, brs)

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Methyl 5-bromo-2-chloro-3-methoxybenzoate, its application will become more common.

Reference:
Patent; Japan Tobacco Inc.; EP1564210; (2005); A1;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics