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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 226208Generated: October 31, 2026

Hydrochloric Acid → HCID 18180255, compound

https://huagongshe.com/reaction/226208

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2,3-Dimethoxy-5-nitrophenolHCID 22326867—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
ProductHCID 18180255HCID 18180255107%

Reaction Steps

A solution of 1.1 g of 2,3-dimethoxy-5-nitrophenol in 45 mL dry methanol with 200 mg of 10% Pd/C (Degussa) was hydrogenated under a hydrogen ballon overnight. The reaction was filtered through a bed of celite and evaporated and the residue was chromatographed over silica gel (ethyl acetate/hexanes 3:2 gradient to 100% ethyl acetate). The appropriate fractions were evaporated to dryness to yield an oil that was taken up in methanol to which methanolic HCl solution was added and the solvent evaporated to yield 1.0 g of the desired product 4,5-dimethoxy-3-hydroxyaniline hydrochloride. MS (m/e): 170 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07557207B2
Source datasetuspto-grants-2009_07
ORD IDord-a1c20588562948399ed3bb6d4a734f4d
Source noteuspto-grants-2009_07