HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → HCID 18180255, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | 2,3-Dimethoxy-5-nitrophenol | HCID 22326867 | — |
| Catalyst | Palladium | HCID 23938 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 18180255 | HCID 18180255 | 107% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07557207B2 |
| Source dataset | uspto-grants-2009_07 |
| ORD ID | ord-a1c20588562948399ed3bb6d4a734f4d |
| Source note | uspto-grants-2009_07 |