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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1803812Generated: November 3, 2026

3,4-dihydro-2H-pyran → HCID 57446120, compound

https://huagongshe.com/reaction/1803812

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3,4-dihydro-2H-pyranHCID 8080—
ReactantBenzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1)HCID 466102—
Reactant3-(Bromomethyl)phenolHCID 13740150—
SolventDichloromethaneHCID 6344—
ProductHCID 57446120HCID 57446120—

Reaction Steps

3-Hydroxybenzyl bromide (1.00 g, 5.35 mmol), DHP (0.89 g, 10.09 mmol), pyridinium-p-toluenesulfonate (0.20 g, 0.80 mmol) were dissolved in methylene chloride (20 mL) and stirred at room temperature for 5 h. The mixture was concentrated and chromatographed without workup. The product 42 was obtained as colorless oil (1.25 g, 87% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08354092B2
Source datasetuspto-grants-2013_01
ORD IDord-8b219a7d56af4ec297f920a1a5b83f66
Source noteuspto-grants-2013_01