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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 404559Generated: October 27, 2026

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

https://huagongshe.com/reaction/404559

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,3-DichloropyridineHCID 16988—
Reactant2-Methylpiperazine, (R)-HCID 7330434—
Reactant3-(Trimethylsilyl)anilineHCID 12488883—
Product1-(3-Chloropyridin-2-yl)-3-methylpiperazineHCID 2272756186.8%

Reaction Steps

More specifically, compound 1 is 2,3-dichloro pyridine (2 g); compound 2 is (R)-2-methyl-piperazine; the synthesized compound 3 is 1-(3-chloro-2-pyridyl)-3-methyl-piperazine (8 g, yield 86.8%). From p-dimethyl(vinyl)silyl phenyl isocynate (compound 7c, 200 mg), it gave about 250 mg of compound A-15 (yield about 61.2%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08748610B2
Source datasetuspto-grants-2014_06
ORD IDord-1d5688810f9247e780dff49fd24272b9
Source noteuspto-grants-2014_06