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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1757620Generated: November 2, 2026

Hydrochloric Acid → 4-(3,4-Dihydroxy-5-nitrophenyl)-3-methylbut-3-en-2-one

https://huagongshe.com/reaction/1757620

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDiethyl EtherHCID 3283—
ReactantMethyl Ethyl KetoneHCID 6569—
Reactant3,4-Dihydroxy-5-nitrobenzaldehydeHCID 5748957—
Product4-(3,4-Dihydroxy-5-nitrophenyl)-3-methylbut-3-en-2-oneHCID 54009949—

Reaction Steps

A solution containing 0.5 g of 3,4-dihydroxy-5-nitrobenzaldehyde in 2.0 ml of butanone was saturated with gaseous hydrogen chloride. After standing over night ether was added to the solution and it was filtered. The product was crystallized from isopropanol, yield 0.2 g (30%), m.p. 139°-141° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05446194
Source datasetuspto-grants-1995_08
ORD IDord-31377559e56f41bea969474c93450c87
Source noteuspto-grants-1995_08