Electric Literature of 709652-82-4, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 709652-82-4, name is 2-Amino-5-bromonicotinonitrile, molecular formula is C6H4BrN3, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
Int-136 (0.058 mmols, 0.040 g) and 2-amino-5-bromonicotinonitrile (0.098 mmols, 0.020 g) were added to a 5mL microwave vessel equipped with a magnetic stir bar. Dioxane (2 mL) and saturated NaHC03(aq) (1 mL) were then added and the reaction vessel was flushed with nitrogen gas. PdC12(dppf) (0.023 mmols, 0.017 g) was added, the reaction vessel was sealed and placed in a microwave reactor and heated to 110 oC for 10 minutes. The reaction solution was then poured into water, extracted with ethyl acetate, and washed once with saturated aqueous sodium chloride. The organic layer was collected and subsequently dried with anhydrous Na2SO4 and filtered. This filtrate was collected, concentrated, and dried in-vacuo. This crude material was then purified by preparative LC/MS: (Water/Acetonitrile; 55-80%). The resultant fractions were collected and the solvent was removed in-vacuo affording tert-butyl (2R)-1-(4-(6-amino-5- cyanopyridin-3 -yl)phenyl)-4-(3 -(7-fluoro- 1 -(3 -methoxypropyl)-3 -methyl- 1 H-indol-2- yl)piperidin-1-yl)-4-oxobutan-2-ylcarbamate (Int-137) as a clear oil (0.040 mmols, 0.027 g, 69% yield). ESI-MS: m/z 683.4 (M+H)+.
According to the analysis of related databases, 709652-82-4, the application of this compound in the production field has become more and more popular.
Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; BROWN, Jason, W.; KEUNG, Walter; LI, Zhe; TYHONAS, John; WO2010/111634; (2010); A2;,
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