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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1837036Generated: November 1, 2026

Benzyl Bromide → HCID 14427964, compound

https://huagongshe.com/reaction/1837036

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzyl BromideHCID 7498—
ReactantLithium iodideHCID 66321—
Reactant1,3-CyclopentanedioneHCID 77466—
Reactant1,8-Diazabicyclo(5.4.0)undec-7-eneHCID 81184—
SolventWaterHCID 962—
SolventAcetonitrileHCID 6342—
ProductHCID 14427964HCID 14427964—

Reaction Steps

To a suspension of 1,3-cyclopentanedione (500 mg, 5.10 mmol) and anhydrous lithium iodide (750 mg, 5.61 mmol) in acetonitrile (10 ml) was added DBU. After 30 min benzyl bromide (1.74 g, 10.2 mmol) was added and the reaction heated for 24 h at reflux. The reaction was poured into water (40 ml), extracted with EtOAc (4×50 ml), dried (MgSO4), the solution concentrated in vacuo and the residue purified by chromatography (SiO2; EtOAc) to give the title compound as an off white solid (222 mg, 23%). δ H (CD3OD) 7.20 (4H, d), 7.10 (1H, m), 3.41 (2H, s), 2.52 (4H, s). m/z (ESI, 70V) 189 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06780874B2
Source datasetuspto-grants-2004_08
ORD IDord-1163ec3e8a01469983b3571b5304f48a
Source noteuspto-grants-2004_08