Application of 885277-48-5, 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.885277-48-5, name is Methyl 2-bromo-6-methylnicotinate, molecular formula is C8H8BrNO2, molecular weight is 230.06, as common compound, the synthetic route is as follows.
Na2C03 (8.43 g, 80 mmol) was added to a solution of methyl 2-bromo-6-methylnicotinate (6.1 g, 26.5 mmol) and methyl acrylate (6.08 mL, 67.1 mmol) in mixture of DMA (16.99 mL, 181 mmol) and toluene (55 mL) at room temperature. Then the reaction mixture was degassed for 15 min. Tri-r olyl phosphine (0.807 g, 2.65 mmol) and allylpalladium chloride dimer (0.4850 g, 1.326 mmol) were added and the reaction mixture was stirred at 115 C in sealed tube for 5 h. Filtered through pad of Celite, and the filtrate was concentrated under reduced pressure. The resultant crude compound was purified by flash column chromatography on 100-200 mesh silica gel using 20% EtO Ac/pet-ether as an eluent to obtained (///-methyl 2-(3-methoxy-3-oxoprop-l- en-l-yl)-6-methylnicotinate (3.30 g, 43.0% yield) as a colorless oil. 1H NMR (400 MHz, CDCE): d 8.53 (dd, /= 1.2, 15.2 Hz, 1H), 8.22 (d, /= 6.8 Hz, 1H), 7.20-7.11 (m, 2H), 3.94 (s, 3H), 3.82 (s, 3H), 2.60 (s, 3H). LCMS (ES) m/z 236.09 (M+H)+
The chemical industry reduces the impact on the environment during synthesis 885277-48-5, I believe this compound will play a more active role in future production and life.
Reference:
Patent; GLAXOSMITHKLINE INTELLECTUAL PROPERTY DEVELOPMENT LIMITED; BANDYOPADHYAY, Anish; CHEUNG, Mui; EIDAM, Hilary Schenck; JOSHI, Hemant; SU, Dai-Shi; (128 pag.)WO2019/149959; (2019); A1;,
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