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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 357844Generated: October 27, 2026

N-bromobutanimide → 5-[5-Bromo-4-hydroxy-6-oxo-2-phenyl-3,6-dihydro-2H-pyran-2-yl]pentanoic acid

https://huagongshe.com/reaction/357844

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-bromobutanimideHCID 67184—
Reactant5-(3,6-dihydro-4-hydroxy-6-oxo-2-phenyl-2H-pyran-2-yl)pentanoic acidHCID 54676629—
Product5-[5-Bromo-4-hydroxy-6-oxo-2-phenyl-3,6-dihydro-2H-pyran-2-yl]pentanoic acidHCID 54721584—

Reaction Steps

The title compound was prepared as described in General Method 3 using 1.4 mmol of 5-[4-hydroxy-6-oxo-2-phenyl-3,6-dihydro-2H-pyran-2-yl]pentanoic acid (prepared in Example J1) and 1.4 mmol of NBS. 1H NMR (DMSO-d6) δ 0.94 (m, 1 H), 1.22-1.40 (m, 3 H), 1.92 (m, 2 H), 2.13 (t, 2 H), 3.28 (q, 2 H), 7.16-7.52 (m, 5 H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05840751
Source datasetuspto-grants-1998_11
ORD IDord-f9d3eeebe3f140f89047b295dd542483
Source noteuspto-grants-1998_11