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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2249808Generated: October 25, 2026

Ethylamine → 2-Ethylamino-4-(4-fluoro-2-methylphenyl)-8-(2,6-difluorophenyl)-8H-pyrido[2,3-d]pyrimidin-7-one

https://huagongshe.com/reaction/2249808

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthylamineHCID 6341—
Reactant8-(2,6-difluoro-phenyl)-4-(4-fluoro-2-methyl-phenyl)-2-methanesulfonyl-8H-pyrido[2,3-d]pyrimidin-7-oneHCID 59639554—
SolventTetrahydrofuranHCID 8028—
Product2-Ethylamino-4-(4-fluoro-2-methylphenyl)-8-(2,6-difluorophenyl)-8H-pyrido[2,3-d]pyrimidin-7-oneHCID 59639650—

Reaction Steps

The product of Example 48 (200 mg, 0.45 mmol) was combined and stirred with 5 mL of a 2M solution of ethylamine in THF. After 5 min the solvents were removed in vacuo, and the residue was partitioned between EtOAc and H2O. The organic phase was washed with H2O, satd aq NaCl, dried over anhyd Na2SO4, filtered and evaporated to give the crude product. Flash chromatography with 0-2% EtOAc/CH2Cl2 followed by recrystallization from CH2Cl2/hexane gave the product as a white-crystalline solid. mp 195-196°, LC MS m/z=411 (MH+) Retention time=2.4 min.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07314881B2
Source datasetuspto-grants-2008_01
ORD IDord-8bdc1dde9a5944f0b54d5d2d7f610c84
Source noteuspto-grants-2008_01