Category: 845306-08-3

Related Products of 845306-08-3, 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.845306-08-3, name is tert-Butyl 5-bromopicolinate, molecular formula is C10H12BrNO2, molecular weight is 258.11, as common compound, the synthetic route is as follows.

A 20 mL sealed tube was charged with tris(dibenzylideneacetone)dipalladium(0) (0.049 g, 0.053 mmol), tri-teri-butylphosphonium tetrafluoroborate (Strem, 0.037 g, 0.127 mmol), tert- butyl 5-bromopicolinate (Combi-Blocks, 0.456 g, 1.767 mmol), and N,N-dimethylformamide (8.8 mL). The tube was purged with a nitrogen stream for 2 minutes, sealed and stirred at ambient temperature. 2-cyanoethylzinc bromide (0.5 M in tetrahydrofuran, 4.77 mL) was added dropwise over 2 minutes via a cannula needle. The reaction mixture was stirred at ambient temperature for 6 hours and then at 75 C for 18 hours. The reaction was cooled to ambient temperature and quenched with water (0.5 mL), and the resulting mixture was concentrated under reduced pressure briefly to remove most of the tetrahydrofuran solvent. The resulting solution was filtered through a glass microfiber frit and directly purified by reverse -phase flash chromatography [150 g Redisep Gold C18 column, flow rate 110 mL/minute, 5-100% gradient of acetonitrile in buffer (0.1 % trifluoroacetic acid)] to give the title compound (0.15 g, 0.65 mmol, 37% yield). MS (ESI+) m/z 233 (M+H)+.

Statistics shows that 845306-08-3 is playing an increasingly important role. we look forward to future research findings about tert-Butyl 5-bromopicolinate.

Reference:
Patent; CALICO LIFE SCIENCES LLC; ABBVIE INC.; MARTIN, Kathleen, Ann; SIDRAUSKI, Carmela; FROST, Jennifer, M.; PLIUSHCHEV, Marina, A.; TONG, Yunsong; BLACK, Lawrence, A.; XU, Xiangdong; SHI, Lei; ZHANG, Qingwei, I.; CHUNG, Seungwon; SWEIS, Ramzi, Farah; DART, Michael, J.; RANDOLPH, John, T.; MURAUSKI, Kathleen; (674 pag.)WO2019/90076; (2019); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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.845306-08-3, name is tert-Butyl 5-bromopicolinate, molecular formula is C10H12BrNO2, molecular weight is 258.11, as common compound, the synthetic route is as follows.name: tert-Butyl 5-bromopicolinate

24. Subjection of ethyl bromo(difluoro)acetate and fe/f-butyl 5-bromopyridine-2- carboxylate to copper powder in dimethyl sulfoxide provided fe/f-butyl 5-(2-ethoxy-1 , 1 – difluoro-2-oxoethyl)pyridine-2-carboxylate. Reduction of the ethyl ester to the primary alcohol was carried out with sodium borohydride in ethanol; subsequent methyl ether formation with iodomethane and silver(l) oxide afforded fe/f-butyl 5-(1 , 1 -difluoro-2- methoxyethyl)pyridine-2-carboxylate. Treatment with trifluoroacetic acid then generated the requisite 5-(1 , 1 -difluoro-2-methoxyethyl)pyridine-2-carboxylic acid.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,845306-08-3, tert-Butyl 5-bromopicolinate, and friends who are interested can also refer to it.

Reference:
Patent; PFIZER INC.; BRODNEY, Michael Aaron; BECK, Elizabeth Mary; BUTLER, Christopher Ryan; ZHANG, Lei; O’NEILL, Brian Thomas; BARREIRO, Gabriela; LACHAPELLE, Erik Alphie; ROGERS, Bruce Nelsen; WO2015/155626; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem