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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 373122Generated: October 26, 2026

Triethylamine → 2-n-Butyl-5-ethyl-6-methylpyrimidin-4(3H)-one

https://huagongshe.com/reaction/373122

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantButanoic acid, 2-ethyl-3-oxo-, ethyl esterHCID 79065—
ReactantPentanimidamide HydrochlorideHCID 11615174—
SolventDimethylformamideHCID 6228—
SolventSodium chloride; waterHCID 57417360—
Product2-n-Butyl-5-ethyl-6-methylpyrimidin-4(3H)-oneHCID 135625455—

Reaction Steps

A solution of 3.0 g valeramidine hydrochloride, 3.47 g ethyl 2-ethylacetoacetate, and 5.8 mL triethylamine in 20 mL DMF was heated to 120° C. for 18 hours. The mixture was diluted with brine and extracted three times with ether. The combined organic material was washed with brine, was dried over MgSO4, was stripped of solvent in vacuo, and then was still flash chromatographed in 3% MeOH in CH2Cl2 to give the title compound as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05162325
Source datasetuspto-grants-1992_11
ORD IDord-2c1dd5fc50af494f8e30ecfcd63b6475
Source noteuspto-grants-1992_11