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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2090280Generated: October 30, 2026

1-Methylpiperazine → 4-Chloro-6-(4-methylpiperazin-1-yl)pyrimidin-2-amine

https://huagongshe.com/reaction/2090280

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-MethylpiperazineHCID 53167—
Reactant2-Amino-4,6-dichloropyrimidineHCID 65522—
ReactantDiisopropylethylamineHCID 81531—
SolventIsopropanolHCID 3776—
Product4-Chloro-6-(4-methylpiperazin-1-yl)pyrimidin-2-amineHCID 1484519—

Reaction Steps

A mixture of 2-Amino-4,6-dichloropyrimidine (1.0 g, 6.1 mmol, Alfa Aesar, Cat. No. A11330), 1-methyl piperazine (0.74 mL, 6.7 mmol, Aldrich, Cat. No. 130001), and N,N-diisopropylethylamine (1.3 mL, 7.3 mmol) in isopropyl alcohol (5 mL) was heated at 110° C. for 2 hours. The reaction mixture was cooled to room temperature (r.t.). The precipitate formed was filtered and then washed by a small amount of isopropanol. The precipitate collected was dried under vacuum to afford this compound and used in the next step without further purification. LCMS(M+H)+: m/z=228.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08436008B2
Source datasetuspto-grants-2013_05
ORD IDord-1b2b37d604ab43689907593f78241eb9
Source noteuspto-grants-2013_05