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. 937046-98-5, name is 7-Bromopyrrolo[2,1-f][1,2,4]triazin-4-amine, A new synthetic method of this compound is introduced below., Product Details of 937046-98-5
[0182] The bromopyrazole (prepared according to WO2009/132135) (0.5 g, 2.4 mmol) was suspended in anhydrous THF (10 mL) under N2 (g). The suspension was stirred and TMSCl (0.67 mL, 5.28 mmol) was added. The mixture was stirred for 20 min. at RT and then cooled to about -78 C after which time a solution of n-BuLi (6 mL, 1.6 N in hexanes, 9.6 mmol) was added slowly. The reaction mixture was stirred for 10 min. at about -78 and then the lactone (1 g, 2.4 mmol) was added via syringe. When the reaction was complete as measured by LCMS, AcOH was added to quench the reaction. The mixture was concentrated under reduced pressure and the residue dissolved in a mixture of CH2CI2 and H2O (100 mL, 1 :1). The organic layer was separated and washed with 0 (50 mL). The organic layer was then dried over anhydrous MgS04, filtered and concentrated under reduced pressure. The residue was subjected to silica gel chromatography eluting with 0-50% EtOAc in hexanes to provide the product as a 1 : 1 mixture of anomers. LCMS m/z 553 [M+H].
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; GILEAD SCIENCES, INC.; CHUN, Byoung, Kwon; CLARKE, Michael, O’Neil Hanrahan; DOERFFLER, Edward; HUI, Hon, Chung; JORDAN, Robert; MACKMAN, Richard, L.; PARRISH, Jay, P.; RAY, Adrian, S.; SIEGEL, Dustin; (149 pag.)WO2016/69826; (2016); A1;,
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