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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 404553Generated: October 26, 2026

2,3-Dichloropyridine → 1-(3-Chloropyridin-2-yl)-3-methylpiperazine

https://huagongshe.com/reaction/404553

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,3-DichloropyridineHCID 16988—
Reactant2-Methylpiperazine, (R)-HCID 7330434—
Reactant3-(Trimethylsilyl)anilineHCID 12488883—
Product1-(3-Chloropyridin-2-yl)-3-methylpiperazineHCID 2272756193.2%

Reaction Steps

Compound A-02 can be synthesized according to method 1. Just R1, R2, and R3 of Scheme 1 are respectively —Cl, -Me and p-SiMe3. More specifically, compound 1 is 2,3-dichloro-pyridine (6 g), compound 2 is (R)-2-methylpiperazine, the synthesized compound 3 is 1-(3-chloro-2-pyridyl)-3-methyl-piperazine (38 g, yield about 93.2%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08748610B2
Source datasetuspto-grants-2014_06
ORD IDord-f385eba5336f4f4f9df03d7c1747a478
Source noteuspto-grants-2014_06