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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 217840Generated: October 29, 2026

8-(4-amino-3-fluorophenoxy)pyrido[2,3-b]pyrazin-3(4H)-one → 1-(3-tert-butyl-1-(6-methoxypyridin-3-yl)-1H-pyrazol-5-yl)-3-(2-fluoro-4-(3-oxo-3,4-dihydropyrido[2,3-b]pyrazin-8-yloxy)phenyl)urea

https://huagongshe.com/reaction/217840

Reaction equation

Participants

RoleNameHCIDCharge
Reactant8-(4-amino-3-fluorophenoxy)pyrido[2,3-b]pyrazin-3(4H)-oneHCID 46900932—
Reactant5-(3-tert-butyl-5-isocyanato-1H-pyrazol-1-yl)-2-methoxypyridineHCID 86647899—
Product1-(3-tert-butyl-1-(6-methoxypyridin-3-yl)-1H-pyrazol-5-yl)-3-(2-fluoro-4-(3-oxo-3,4-dihydropyrido[2,3-b]pyrazin-8-yloxy)phenyl)ureaHCID 441330147%

Reaction Steps

Method F2 was used with 8-(4-amino-3-fluorophenoxy)pyrido[2,3-b]pyrazin-3(4H)-one and 5-(3-tert-butyl-5-isocyanato-1H-pyrazol-1-yl)-2-methoxypyridine to afford the title compound (6 mg, 7%) as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08198279B2
Source datasetuspto-grants-2012_06
ORD IDord-43cf140f828b484e96f9048e3ed0ae47
Source noteuspto-grants-2012_06