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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1019736Generated: October 30, 2026

Ethanolamine → HCID 33788885, compound

https://huagongshe.com/reaction/1019736

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolamineHCID 700—
Reactant2,4-DifluorobenzaldehydeHCID 73770—
ReactantSodium BicarbonateHCID 516892—
ReactantSodium borohydrideHCID 4311764—
SolventMethanolHCID 887—
SolventDichloromethaneHCID 6344—
ProductHCID 33788885HCID 3378888569%

Reaction Conditions

Temperature0 °C

Reaction Steps

Ethanolamine (0.86 g, 14.07 mmol) was added to a solution of 2,4-difluorobenzaldehyde (2.0 g, 14.07 mmol) in methanol (50 mL) at RT. Sodium bicarbonate (7.0 g, 83.33 mmol) was added and the reaction mixture was stirred at reflux for 24 hours. The mixture was cooled to 0° C. and sodium borohydride (0.32 g, 8.42 mmol) was then added in lots, maintaining the temperature of the mixture at 0-5° C. The reaction mixture was allowed to warm to RT over a period of 4 hours. The reaction mixture was then diluted with DCM (50 mL), washed with brine (2×30 mL), dried (Na2SO4) and the solvents removed under reduced pressure to afford the title compound (1.79 g, 69%). The product was used in the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08716287B2
Source datasetuspto-grants-2014_05
ORD IDord-f1c9c72b40d843b3ba71edba9d6e18e9
Source noteuspto-grants-2014_05