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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1906008Generated: October 30, 2026

Hydrochloric Acid → HCID 20145006, compound

https://huagongshe.com/reaction/1906008

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
Reactant2-Aminomethyl-1-ethylpyrrolidineHCID 117295—
ReactantHCID 20145031HCID 20145031—
SolventEthylene GlycolHCID 174—
ProductHCID 20145006HCID 2014500643.5%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of ethyl 2-methylamino-5-(4-pyridyl)-4-thiazolecarboxylate (2.63 g), 2-aminomethyl-1-ethylpyrrolidine (2.6 g) in a mixture of ethyleneglycol (10 ml) and conc. HCl (0.5 ml) was stirred at 80° C. for 6 hours. The reaction mixture was poured into water and the resultant solution was extracted with ethyl acetate. The organic extract was washed with brine and dried over magnesium sulfate. The solvent was evaporated in vacuo and the residue was subjected to column chromatography on alumina eluting with a mixture of diisopropylether and ethylacetate (1:1) and the fractions containing the desired compound were combined and evaporated in vacuo to give 2-methylamino-5-(4-pyridyl)-4-[(1-ethyl-2-pyrrolidinyl)methylcarbamoyl]thiazole (1.5 g). mp 76°-8° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04649146
Source datasetuspto-grants-1987_03
ORD IDord-c5fe74de1649429388231c5fec2acb6e
Source noteuspto-grants-1987_03