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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1012156Generated: October 30, 2026

Methanol → HCID 178499180, compound

https://huagongshe.com/reaction/1012156

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantThionyl ChlorideHCID 24386—
ReactantHCID 178470496HCID 178470496—
ReactantHCID 178524956HCID 178524956—
SolventEthanolHCID 702—
ProductHCID 178499180HCID 178499180—

Reaction Steps

The compound was prepared in a manner analogous to 4-nitro-1H-pyrazole-3-carboxylic acid ethyl ester (Example 16A) using 4-nitro-1H-pyrazole-3-carboxylic acid (100 g, 636 mmol), thionyl chloride (55.5 ml, 764 ml) and MeOH (750 ml), instead of EtOH. 4-Nitro-1H-pyrazole-3-carboxylic acid methyl ester was obtained as an off-white solid (109 g, 100%). (LC/MS (acidic method): Rt 1.82 min, [M+H]+ 172).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07977477B2
Source datasetuspto-grants-2011_07
ORD IDord-4628d4f4e7e24ca0a743b5009fa72fe1
Source noteuspto-grants-2011_07