Category: 50638-46-5

These common heterocyclic compound, 50638-46-5, name is 4-Bromo-3-chloroanisole, 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. Computed Properties of C7H6BrClO

Under argon gas atmosphere, to a solution of 1-bromo-2-chloro-4-methoxybenzene (120 g) in a mixed diglyme (230 mL) and 1,2-dimethoxyethane (90 mL), sodium cyano acetone (62.6 g), sodium t-butoxide (114,6 g) and sodium iodide (81.2 g) were added with stirring at room temperature to obtain a suspension. By another process, under argon gas atmosphere, a mixture of diglyme (40 mL), palladium acetate (426 mg) and triphenylphosphine (1.99 g) was stirred for about 30 minutes at 110C to dissolve. This solution was dropped into the above suspension. The mixture was warmed to 110 to 115C of inside temperature and stirred for 7 hours. The reaction mixture was cooled, diluted with ethyl acetate (480 mL) and washed with an aqueous solution of sulfuric acid (concentrated sulfuric acid 101 g/water 660 mL). The organic layer was washed with 10% saturated aqueous solution of sodium chloride (360 mL) twice. Activated charcoal (3.6 g) was added to the organic layer. The mixture was stirred for 1 hour and filtered. The filtrate was washed with ethyl acetate (240 mL) to obtain a solution of 1-cyano-1-(2-chloro-4-methoxyphenyl)propan-2-on (971.7 g). The yield of the title compound that determined using an internal reference method for HPLC described in Example 1, is 101.7 g.

The synthetic route of 4-Bromo-3-chloroanisole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ONO PHARMACEUTICAL CO., LTD.; EP1637531; (2006); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of 50638-46-5, 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. 50638-46-5, name is 4-Bromo-3-chloroanisole belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Under an argon atmosphere, 1-bromo-2-chloro-4-methoxybenzene (44.3 g) was dissolved in toluene (220 ml), ethyl 2-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)benzoate (60.8 g), water (132 ml), sodium hydrogen carbonate (33.6 g) and dichlorobis(triphenylphosphine)palladium(II) (2.8 g) were added, and the mixture was stirred at an oil bath temperature of 120 C. for 7 hr. To the reaction mixture was added ethyl 2-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)benzoate (5.2 g), and the mixture was further stirred for 2 hr. The reaction mixture was cooled to room temperature, toluene (100 ml) and water (200 ml) were added, and the mixture was stirred overnight. To the reaction mixture was added activated carbon (3 g), and the mixture was further stirred for 1 hr. The insoluble material was filtered off through Celite, and the insoluble material was washed with toluene (100 ml) and water (200 ml). The obtained filtrates were combined to allow for layer separation. The obtained organic layer was washed with water (100 ml), and the solvent was evaporated to give the title compound (67.7 g). 1H-NMR (400 MHz, DMSO-D6) delta: 7.88-7.86 (1H, m), 7.63 (1H, td, J=7.6, 1.4 Hz), 7.51 (1H, td, J=7.6, 1.4 Hz), 7.27 (1H, dd, J=7.6, 0.9 Hz), 7.18 (1H, d, J=8.6 Hz), 7.06 (1H, d, J=2.6 Hz), 6.95 (1H, dd, J=8.6, 2.6 Hz), 4.01 (2H, m), 3.80 (3H, s), 0.96 (3H, t, J=7.1 Hz).

The synthetic route of 4-Bromo-3-chloroanisole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MOTOMURA, Takahisa; MATSUO, Takuya; SHOMI, Gakujun; US2015/18403; (2015); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Some common heterocyclic compound, 50638-46-5, name is 4-Bromo-3-chloroanisole, molecular formula is C7H6BrClO, 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. 50638-46-5

Step 1; Scheme 30:; To a mixture of 4-bromo-3-chloro anisole (35 g, 0.159 mol), KCl (11.9 g, 0.160 mol, 1 eq.), K2CO3 (33 g, 0.238 mol, 1.5 eq) in 400 mL DMF in a sealed tube was added acrolein diethylacetal (73 mL, 0.479 mol, 3 eq.) and Bu4NOAc (96 g, 0.318 mol, 2 eq.). N2 was bubbled through the mixture and Pd(OAc)2 (1.1 g, 4. mmol, 3 mol %) was added. The reaction mixture was heated in an oil bath for 6 hr at 100 C. then cooled in an ice-bath. 300 mL of water was then added, followed by 500 mL of 1N HCl. The ice-bath was removed and the mixture was stirred for 30 min. The solution was extracted with ethyl acetate once then with diethyl ether 3 times. The combined organic layer washed with water, brine, dried over MgSO4, filtered and concentrated to provide the crude product which was recrystallized from hot ethyl acetate-hexanes to provide 15.5 g of crystalline 3-(2-chloro-4-methoxy-phenyl)-propenal. The mother liquor was concentrated and chromatographed with 10% ethyl acetate to provide another 5.6 g of 3-(2-chloro-4-methoxy-phenyl)-propenal.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 50638-46-5, its application will become more common.

Reference:
Patent; Chackalamannil, Samuel; Chelliah, Mariappan V.; Clasby, Martin C.; Eagen, Keith A.; Scott, Jack D.; Wang, Yuguang; Xia, Yan; Greenlee, William J.; US2007/197628; (2007); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics