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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 446803Generated: October 30, 2026

Morpholine → 3-bromo-4-morpholinofuran-2(5H)-one

https://huagongshe.com/reaction/446803

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMorpholineHCID 8083—
ReactantCesium carbonateHCID 10796—
Reactant3,4-Dibromo-2(5H)-furanoneHCID 154638—
SolventDimethylformamideHCID 6228—
Product3-bromo-4-morpholinofuran-2(5H)-oneHCID 5836801787.7%

Reaction Steps

To a stirred solution of 3,4-dibromofuran-2(5H)-one (1 g, 0.004 mol) in DMF (10 mL) was added Cs2CO3 (1.34 g, 0.004 mol) followed by morpholine (360 mg, 0.004 mol) at room temperature under a N2 atmosphere. The reaction mixture was then stirred for 30 minutes, quenched with ice water and extracted with EtOAc (2×50 mL). The combined organic layers were washed with water, dried over anhydrous Na2SO4, filtered, and concentrated in vacuo to afford 3-bromo-4-morpholinofuran-2(5H)-one (0.87 g, 85%) as a solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08481534B2
Source datasetuspto-grants-2013_07
ORD IDord-12dd7f1936c64d1c9ee8584f18f117ef
Source noteuspto-grants-2013_07