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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1085625Generated: October 27, 2026

Allyl bromide → Benzaldehyde, 3-iodo-5-methoxy-4-(2-propenyloxy)-

https://huagongshe.com/reaction/1085625

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAllyl bromideHCID 7841—
ReactantPotassium CarbonateHCID 11430—
ReactantBenzaldehyde, 4-hydroxy-3-iodo-5-methoxy-HCID 79499—
SolventDimethylformamideHCID 6228—
ProductBenzaldehyde, 3-iodo-5-methoxy-4-(2-propenyloxy)-HCID 4382547—

Reaction Steps

Allyl bromide (27.5 ml, 0.32 mol) was added to a solution of 5-iodovanillin (50.0 g, 0.18 mol) in DMF (200 ml) containing potassium carbonate (48 g, 0.35 mol) at 80° C. The mixture was stirred at this temperature for 1 hour, filtered, and the filtrate was evaporated to a residue, which was purified by HPLC (hexane-ethyl acetate, 4:1, v/v) to give 4-allyloxy-5-iodo-3-methoxybenzaldehyde.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05010100
Source datasetuspto-grants-1991_04
ORD IDord-09b2db7817de4c739fa1efd09c4a4ec5
Source noteuspto-grants-1991_04