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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 50213Generated: November 1, 2026

Hydrochloric Acid → 2-[2-(4-amidinophenyl)ethyl]benzothiazol-5-yl-carboxylic acid-N-(2-pyridyl)-N-(ethoxycarbonylmethyl)amide dihydrochloride

https://huagongshe.com/reaction/50213

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthanolHCID 702—
ReactantAmmonium CarbonateHCID 517111—
Reactant2-[2-(4-cyanophenyl)ethyl]benzothiazol-5-yl-carboxylic acid-N-(2-pyridyl)-N-(ethoxycarbonylmethyl)amideHCID 18412581—
CatalystAcetic AcidHCID 176—
SolventDichloromethane ethanolHCID 21584144—
Product2-[2-(4-amidinophenyl)ethyl]benzothiazol-5-yl-carboxylic acid-N-(2-pyridyl)-N-(ethoxycarbonylmethyl)amide dihydrochlorideHCID 1841266795%

Reaction Steps

Prepared analogously to Example 9 from 2-[2-(4-cyanophenyl)ethyl]benzothiazol-5-yl-carboxylic acid-N-(2-pyridyl)-N-(ethoxycarbonylmethyl)amide, ethanolic hydrochloric acid, ethanol, and ammonium carbonate. Yield: 95% of theory, C26H25N5O3S (487.58); Rf value: 0.20 (silica gel; methylene chloride/ethanol=4:1+a few drops of acetic acid); EKA mass spectrum: (M+H)+=488.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06710055B2
Source datasetuspto-grants-2004_03
ORD IDord-b17702371bd24fa3b50f9fa5a35f31ae
Source noteuspto-grants-2004_03