Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1754546Generated: October 28, 2026

Formaldehyde → HCID 86712754, compound

https://huagongshe.com/reaction/1754546

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantTrifluoroacetic acidHCID 6422—
ReactantHCID 86712755HCID 86712755—
SolventEthanolHCID 702—
ProductHCID 86712754HCID 8671275439.4%

Reaction Steps

A solution of 1.089 g (4.07 mmol) of 2-(4-benzyl-3,4-dihydro-2H-quinoxalin-1-yl)ethylamine and 20 ml ethanol was treated with 122 mg (4.07 mmol) of formaldehyde and 511 mg (4.48 mmol) of trifluoroacetic acid and stirred over night at room temperature. The solvent was evaporated and dichloromethane was added to the crude mixture. The organic phase was washed with 1 molar sodium hydroxide solution. The organic phase was dried and purified by column chromatography on silica (eluent: starting with dichloromethane and then up to 100% methanol) to yield 448 mg of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09169253B2
Source datasetuspto-grants-2015_10
ORD IDord-dbbc037ddbc34c8390547d6a8d783eab
Source noteuspto-grants-2015_10