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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 70974Generated: October 26, 2026

2-Ethylaniline → 5,7-Dichloro-3-methyl-1H-indazole

https://huagongshe.com/reaction/70974

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-EthylanilineHCID 11357—
ReactantChlorosuccinimideHCID 31398—
Reactant2,4-Dichloro-6-ethylanilineHCID 11819834—
SolventAcetonitrileHCID 6342—
Product5,7-Dichloro-3-methyl-1H-indazoleHCID 178434329—

Reaction Steps

5,7-Dichloro-3-methyl-1H-indazole was prepared using a procedure similar to that described in Example 98, part a and b, except starting from 2,4-dichloro-6-ethylaniline (2.9 g) that was prepared by chlorination of 6-ethylaniline (10 g) with N-chlorosuccinimide (22 g) in acetonitrile (80 mL).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08822689B2
Source datasetuspto-grants-2014_09
ORD IDord-9fbb7237748140b7a07313f7f1f64687
Source noteuspto-grants-2014_09