Application of 345311-03-7, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 345311-03-7, name is tert-Butyl 5,6-dihydroimidazo[1,2-a]pyrazine-7(8H)-carboxylate, This compound has unique chemical properties. The synthetic route is as follows.
A mixture of tert-butyl 6,8-dihydro-5H-imidazo[1,2-a]pyrazine-7-carboxylate (1.0 g, 4.48 mmol), 8-chloro-7-fluoro-6-iodo-isoquinolin-3-amine (1.5 g, 4.65 mmol), potassium carbonate (1.0 g, 7.25 mmol), palladium acetate (122 mg, 0.37 mmol), tricyclohexyl phosphine (210 mg, 0.75 mmol) and trimethylacetic acid (115 mg, 1.13 mmol) in N,N-dimethylacetamide (20 mL) was stirred for 6 hours at 100 C. The resulting mixture was cooled to room temperature and then filtered. The filtrate was concentrated under vacuum. The residue was purified by reverse phase chromatography (acetonitrile 0-55/0.05% sodium bicarbonate in water) to afford tert-butyl 3-(3-amino-8-chloro-7-fluoro-6-isoquinolyl)-6, 8-dihydro-5H-imidazo[1,2-a]pyrazine-7-carboxylate (500 mg, 1.20 mmol) as a yellow solid. LCMS (ESI) [M+H]+=418.1.
The chemical industry reduces the impact on the environment during synthesis tert-Butyl 5,6-dihydroimidazo[1,2-a]pyrazine-7(8H)-carboxylate. I believe this compound will play a more active role in future production and life.
Reference:
Patent; Genentech, Inc.; Chan, Bryan; Drobnick, Joy; Gazzard, Lewis; Heffron, Timothy; Liang, Jun; Malhotra, Sushant; Mendonca, Rohan; Rajapaksa, Naomi; Stivala, Craig; Tellis, John; Wang, Weiru; Wei, BinQing; Zhou, Aihe; Cartwright, Matthew W.; Lainchbury, Michael; Gancia, Emanuela; Seward, Eileen; Madin, Andrew; Favor, David; Fong, Kin Chiu; Hu, Yonghan; Good, Andrew; US2018/282282; (2018); A1;,
Pyrazine – Wikipedia,
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