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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1786646Generated: October 30, 2026

Pyridine → 1-(3-methyl-1H-indazol-1-yl)Ethanone

https://huagongshe.com/reaction/1786646

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantAcetic AnhydrideHCID 7918—
ReactantHCID 178434273HCID 178434273—
Catalyst4-(Dimethylamino)pyridineHCID 14284—
SolventTetrahydrofuranHCID 8028—
Product1-(3-methyl-1H-indazol-1-yl)EthanoneHCID 1263918691%

Reaction Steps

3-Methylindazole (1.00 g, 7.6 mmol) (J. Med. Chem. 2706 (1997)] was dissolved in 10 ml THF and stirred at room temperature under a blanket of argon. Pyridine (0.64 ml, 7.9 mmol) was added, followed by Ac2O (0.79 ml, 8.3 mmol) and catalytic DMAP (90 mg, 0.7 mmol). The reaction proceeded for 2 h and was then partitioned between 1N HCl and dichloromethane. The organic phase was dried over MgSO4 and concentrated under vacuum to a tan solid (1.2 g, 91% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07507763B2
Source datasetuspto-grants-2009_03
ORD IDord-bb936bcf86b84c1b9b86441df70ddda7
Source noteuspto-grants-2009_03