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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1912466Generated: October 30, 2026

Hydrochloric Acid → HCID 178463287, compound

https://huagongshe.com/reaction/1912466

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactant3-[1-(3-Chloro-phenyl)-1-(2-methyl-propane-2-sulfinylamino)-ethyl]-pyrazole-1-sulfonic acid dimethylamideHCID 66825322—
SolventMethanolHCID 887—
ProductHCID 178463287HCID 17846328786%

Reaction Conditions

Temperature80 °C

Reaction Steps

Hydrochloric acid 4 M in dioxane (19.79 mL, 79.15 mmol) was added to a solution of 3-[1-(3-chloro-phenyl)-1-(2-methyl-propane-2-sulfinylamino)-ethyl]-pyrazole-1-sulfonic acid dimethylamide (2.29 g, 5.28 mmol) in MeOH (5 mL) and the mixture was stirred at 80° C. in a sealed tube for 18 hours. The solvent was evaporated in vacuo. The residue was poured into NaHCO3 (aq. sat. solution) and extracted with DCM. The organic layer was separated, dried (MgSO4), filtered and the solvents evaporated in vacuo to yield rac-1-(3-chloro-phenyl)-1-(1H-pyrazol-3-yl)-ethylamine (1 g, 86% yield) as a pale yellow solid which was used in the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08609660B2
Source datasetuspto-grants-2013_12
ORD IDord-89c34f2e4f5040b4a33d7a44b5bcb358
Source noteuspto-grants-2013_12