Category: 37131-87-6

Reference of 37131-87-6, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.37131-87-6, name is 5-Bromopyrimidine-2-carboxylic acid, molecular formula is C5H3BrN2O2, molecular weight is 202.99, as common compound, the synthetic route is as follows.

To a solution of 5-bromopyrimidine-2-carboxylic acid (3.22 g, 15.9 mmol) in MeOH (50 mL) at room temperature was added acetyl chloride (4.0 mL, 56.3 mmol). The reaction mixture was heated to reflux for 15 min, cooled to room temperature and concentrated under reduced pressure. The reaction mixture was diluted with saturated NaHCO3 (30 mL) and EtOAc, and transferred to a separatory funnel. The aqueous phase was extracted with EtOAc (4 x) and the combined organic extracts were washed with brine (1 x), dried over MgSO4, filtered, and concentrated to give methyl 5- bromopyrimidine-2-carboxylate (2.30 g, 10.6 mmol, 67% yield) as a white solid. LC/MS (ESI+) m/z = 216.9 (M+H). Calculated for C6H5BrN2O2216.0

The chemical industry reduces the impact on the environment during synthesis 37131-87-6, I believe this compound will play a more active role in future production and life.

Reference:
Patent; AMGEN INC.; ALLEN, Jennifer R.; AMEGADZIE, Albert; BOURBEAU, Matthew P.; BROWN, James A.; CHEN, Jian J.; CHENG, Yuan; FROHN, Michael J.; GUZMAN-PEREZ, Angel; HARRINGTON, Paul E.; LIU, Longbin; LIU, Qingyian; LOW, Jonathan D.; MA, Vu Van; MANNING, James; MINATTI, Ana Elena; NGUYEN, Thomas T.; NISHMURA, Nobuko; NORMAN, Mark H.; PETTUS, Liping H.; PICKRELL, Alexander J.; QIAN, Wenyuan; RUMFELT, Shannon; RZASA, Robert M.; SIEGMUND, Aaron C.; STEC, Markian M.; WHITE, Ryan; XUE, Qiufen; (759 pag.)WO2016/22724; (2016); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Reference of 37131-87-6, 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. 37131-87-6, name is 5-Bromopyrimidine-2-carboxylic acid. A new synthetic method of this compound is introduced below.

To a solution of 5-bromo-2-pyrimidine carboxylic acid (6 g, 29.6 mmol) in MeOH (300 mL) was added Et3N (5.98 g, 59.2 mmol). The mixture was cooled to 0 degrees Celsius, and sulfonyl chloride (5.3 g, 44.4 mmol) was added dropwise to the solution. After addition, the mixture was stirred at rt for 12 hours. The solvent was removed and the residue was dissolved in ethyl acetate. The organic layer was washed with sodium bicarbonate, brine, and dried with sodium sulfate. The solvent was removed to give the pure product. MS: calc’d 217 (MH+), exp 217 (MH+).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,37131-87-6, 5-Bromopyrimidine-2-carboxylic acid, and friends who are interested can also refer to it.

Reference:
Patent; Liang, Chungen; Tang, Guozhi; Wong, Jason Christopher; Wu, Xihan; Zhang, Zhenshan; US2010/216806; (2010); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Synthetic Route of 37131-87-6 , The common heterocyclic compound, 37131-87-6, name is 5-Bromopyrimidine-2-carboxylic acid, molecular formula is C5H3BrN2O2, 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.

Preparation 65 5-Bromo-pyrimidine-2-carboxylic acid methyl ester Fuming hydrochloric acid was passed through an ice-cooled SOTUTIBN OF THE- product of preparation 64 (5. 5g. 27mmol) in methanol (50mL) until saturated The reaction mixture was warmed to room temperature and was stirred for 18- hours. The solvent was then evaporated under reduced pressure and. the- residue was dissolved in dichloromethane, washed with water and sodium HYDROGEN CARBONATE SOLUTION, DRIED-OVER MAGNESIUM SULFATE. AND CONCENTRATED IN-: O AFFORD THE”TITLE compound as yellow. solid in 57% yield, 3.5g. HNMR (CDC) 3. 400MHZ) § : 4, 65 (s, 3H), 9. 00 (s, 2H). MS AP +

The synthetic route of 37131-87-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PFIZER LIMITED; PFIZER INC.; WO2005/28452; (2005); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia