Butyl vinyl ether → tert-Butyl 4-(6-((6-(1-Butoxyethenyl)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydro-pyrido(2,3-d)pyrimidin-2-yl)amino)-pyridin-3-yl)-piperazine-1-carboxylate

온도

95 °C

A 5-L, three-necked, round-bottomed flask, equipped with a mechanical stirrer, a thermocouple, and a nitrogen inlet/outlet vented through a silicone oil bubbler was placed under a nitrogen atmosphere and charged with 4-[6-(6-bromo-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)-pyridin-3-yl]-piperazine-1-carboxylic acid tert-butyl ester (300 g, 0.51 mol, prepared as in Example 2), butyl vinyl ether (154 g, 1.54 mol, ALDRICH), n-butanol (1.5 L, ALDRICH), and diisopropyl ethylamine (107 mL, 0.62 mol, ALDRICH). The slurry was placed under approximately 50 Torr vacuum and then refilled with nitrogen 3 times. To this was added 8.3 g (0.01 mol) bis-(diphenylphosphinoferrocene) palladium dichloride dichloromethane (JOHNSON MATTHEY, Lot 077598001) and the resulting slurry was purged an additional three times as described above. The mixture was then heated to 95° C. and stirred for 20 h. The resulting thin red slurry was diluted with 2 L of heptane and cooled to approximately 5° C. At this temperature, 400 mL saturated aqueous potassium carbonate was added and the mixture was filtered and rinsed with 250 mL of heptane. After drying in an oven for 16 h at 45° C., 231.7 g (75% yield) of the title compound was obtained as a yellow solid.

1. additionrefilled with nitrogen 3 times
2. customthe resulting slurry was purged an additional three times
3. additionThe resulting thin red slurry was diluted with 2 L of heptane
4. temperaturecooled to approximately 5° C
5. additionAt this temperature, 400 mL saturated aqueous potassium carbonate was added
6. filtrationthe mixture was filtered
7. washrinsed with 250 mL of heptane
8. customAfter drying in an oven for 16 h at 45° C.

ORD 기록

ord-71d7af4ace9d40cc9a958a26b1c9802a

출처 데이터셋

uspto-grants-2008_03

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07345171B2