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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 357842Generated: October 27, 2026

N-bromobutanimide → 3-bromo-5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-one

https://huagongshe.com/reaction/357842

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-bromobutanimideHCID 67184—
Reactant5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-oneHCID 54680410—
Product3-bromo-5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-oneHCID 54721560—

Reaction Steps

The title compound was prepared as described in General Method 3 using 4.0 mmol of 5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-one (prepared in Example W) and 4.0 mmol of NBS. The product was obtained as a solid. 1H NMR (DMSO-d6) δ 3.68 (s, 2 H), 7.27-7.40 (m, 10 H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05840751
Source datasetuspto-grants-1998_11
ORD IDord-6dfbbf2e14f74f46b6a3a57bd5978f98
Source noteuspto-grants-1998_11