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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1489926Generated: October 31, 2026

4-Hydroxybenzaldehyde → Bisdemethoxycurcumin

https://huagongshe.com/reaction/1489926

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-HydroxybenzaldehydeHCID 126—
ReactantButylamineHCID 8007—
ReactantTriethyl borateHCID 9009—
ReactantAcetylacetoneHCID 31261—
ReactantDimethylacetamideHCID 31374—
ReactantBoron monoxideHCID 6327189—
ProductBisdemethoxycurcuminHCID 5315472—

Reaction Conditions

Temperature80 °C

Reaction Steps

A 1 L reactor was charged with 171 g of 4-hydroxybenzaldehyde, 46.6 g boron oxide, 300 g N,N-dimethylacetamide, 70.2 g 2,4-pentanedione and 145.5 g triethyl borate. The mixture was stirred and heated to a temperature of 80° C. under nitrogen. n-Butylamine totaling 21.3 g was then fed dropwise into the reaction mixture over a period of 60 minutes. The temperature of the reaction mixture varied between 80° and 85° C. during this period.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05679864
Source datasetuspto-grants-1997_10
ORD IDord-bf1964674d5b4fdfb295228a8b830243
Source noteuspto-grants-1997_10