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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 233732Generated: October 30, 2026

Ammonia → HCID 19703271, compound

https://huagongshe.com/reaction/233732

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantTrifluoromethanesulfonic anhydrideHCID 67749—
Reactant2-(2-Fluoropyridin-3-yl)ethanolHCID 19703668—
SolventDichloromethaneHCID 6344—
ProductHCID 19703271HCID 19703271—

Reaction Conditions

Temperature-40 °C

Reaction Steps

To a solution of 0.20 g (1.42 mmol) of 3-(2-hydroxyethyl)-2-fluoropyridine in 8 ml of dry CH2Cl2 cooled to -40° C. was added 0.18 ml (0.8 mmol) trifluoromethanesulfonic anhydride under an atmosphere of nitrogen. After stirring for 30 min at -40° C., 30 ml of cold (-78° C.) NH3 (l) was added. The mixture was stirred for 30 min at -40° C., and then concentrated in vacuo to afford 1.03 g of crude salt which was washed twice with 20 ml diethyl ether to yield 0.82 g of 3-(2-aminoethyl)-2-fluoropyridine as a trifluoromethanesulfonic acid salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05593993
Source datasetuspto-grants-1997_01
ORD IDord-41febb70df5e40fba6f34fd644d46cdf
Source noteuspto-grants-1997_01