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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 22383Generated: October 30, 2026

Hydrochloric Acid → 1-Amino-N-1H-pyrrol-1-ylcyclopentanecarboxamide Hydrochloride

https://huagongshe.com/reaction/22383

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantIodineHCID 807—
ReactantEthyl acetate hexaneHCID 21226206—
Reactant1,1-dimethylethyl-[1-[(1H-pyrrol-1-ylamino)carbonyl]cyclopentyl]carbamateHCID 86747437—
SolventIsopropanol ethyl acetateHCID 22055037—
Product1-Amino-N-1H-pyrrol-1-ylcyclopentanecarboxamide HydrochlorideHCID 19973176—

Reaction Steps

To a stirred solution consisting of 1,1-dimethylethyl-[1-[(1H-pyrrol-1-ylamino)carbonyl]cyclopentyl]carbamate (2.90 g) in ethyl acetate/isopropanol (30 ml, 3:1) was added excess ethereal HCl. After stirring for 18 hours at room temperature, the reaction appeared complete by TLC (silica gel, 30% EtOAc/hexane, I2 stain). The solid was filtered under nitrogen and recrystallized from ether/methanol to afford 1.40 g of the product, m.p. 218°-220° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05428053
Source datasetuspto-grants-1995_06
ORD IDord-41f0a9267e774ba1a6c4fde6d1d3b1c9
Source noteuspto-grants-1995_06