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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 337144Generated: October 29, 2026

Ethylamine → N-Cyclopropyl-5-{3-[(1-{2-[2-(ethylamino)ethoxy]phenyl}cyclopropyl)amino]-2-oxopyrazin-1(2H)-yl}-2-fluoro-4-methylbenzamide

https://huagongshe.com/reaction/337144

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthylamineHCID 6341—
Reactant5-[3-({1-[2-(2-Chloroethoxy)phenyl]cyclopropyl}amino)-2-oxopyrazin-1(2H)-yl]-N-cyclopropyl-2-fluoro-4-methylbenzamideHCID 66689220—
SolventTetrahydrofuranHCID 8028—
Solvent1,4-DioxaneHCID 31275—
ProductN-Cyclopropyl-5-{3-[(1-{2-[2-(ethylamino)ethoxy]phenyl}cyclopropyl)amino]-2-oxopyrazin-1(2H)-yl}-2-fluoro-4-methylbenzamideHCID 66689747—

Reaction Steps

A solution of ethylamine (2.012 mL of 2M in THF) and 5-[3-({1-[2-(2-chloroethoxy)phenyl]cyclopropyl}amino)-2-oxopyrazin-1(2H)-yl]-N-cyclopropyl-2-fluoro-4-methylbenzamide (Example 318h, 100 mg) in dioxane (3 mL) was heated for 24 h at 100° C. in a sealed tube. Further ethylamine (2.012 mL of a 2M solution in THF) was added and the reaction was heated for a further 24 h. Purification by preparative HPLC (Xbridge column eluting with a gradient of acetonitrile in 0.2% (v/v) aqueous ammonia) gave the title compound as a solid (10 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08889692B2
Source datasetuspto-grants-2014_11
ORD IDord-21065ce9ba4f44f187e8db0b773d9f02
Source noteuspto-grants-2014_11