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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 894110Generated: October 29, 2026

Ethanol → HCID 178470423, compound

https://huagongshe.com/reaction/894110

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantSulfuric AcidHCID 1118—
ReactantHCID 178434627HCID 178434627—
ProductHCID 178470423HCID 178470423—

Reaction Steps

Esterification of 3-methyl-4-nitropyrazole-5-carboxylic acid was previously reported using ethanol and sulphuric acid at elevated temperatures. Attempts to repeat this procedure resulted in concomitant alkylation of the pyrazole nucleus. However, it was found that the desired ester could be obtained if this reaction was run at room temperature.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04282361
Source datasetuspto-grants-1981_08
ORD IDord-6aa384fd6194482288cefbfe6c147338
Source noteuspto-grants-1981_08