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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1085844Generated: November 1, 2026

Hydrochloric Acid → HCID 19768592, compound

https://huagongshe.com/reaction/1085844

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantTrifluoroacetic acidHCID 6422—
ReactantHCID 54153779HCID 54153779—
ProductHCID 19768592HCID 1976859290.4%

Reaction Steps

In an analoqous manner to that described in Examples 16 and 17, from 4.6 g (13.4 mmol) of t-butyl [2-(1-methyl-4-phenyl-3-pyrazolecarboxamido)ethyl]carbamate there were obtained, after cleavage of the t-butoxycarbonyl group with trifluoroacetic acid and working-up, 4.8 g of the crude hydrochloride. Recrystallization from ethanol/diethyl ether yielded 3.4 g (90%) of N-(2-aminoethyl)-1-methyl-4-phenyl-3-pyrazolecarboxamide hydrochloride as white crystals, melting point 182°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05011849
Source datasetuspto-grants-1991_04
ORD IDord-aec7016686fb4ca3a2b00c9144270395
Source noteuspto-grants-1991_04