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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 218311Generated: October 27, 2026

Hydrochloric Acid → HCID 59313682, compound

https://huagongshe.com/reaction/218311

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1H,3H,4H,5H,6H-cyclopenta(c)furan-1,3-dioneHCID 324854—
Reactant1-Amino-1H-pyrrole-2-carboxamideHCID 10419180—
SolventTetrahydrofuranHCID 8028—
ProductHCID 59313682HCID 5931368292.9%

Reaction Steps

1-Amino-1H-pyrrole-2-carboxamide (91 mg, 0.724 mmol) was dissolved in THF (3 mL), then 1-cyclopentene-1,2-dicarboxylic anhydride (100 mg, 0.724 mmol) was added. The reaction was stirred at rt for 30 min, then 0.5 M HCl (10 mL) was added. The precipitated product was filtered, rinsing with more 0.5 M HCl. The solids were dried to give 19A (177 mg, 92%). 19A had an analytical HPLC retention time=1.597 min (Phenomenex Luna 4.6×50 mm, 10-90% aqueous MeOH over 5 min containing 0.1% TFA) and a LC/MS M++1=264.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08198438B2
Source datasetuspto-grants-2012_06
ORD IDord-af422c0d386349b9bd227976407eb246
Source noteuspto-grants-2012_06