HuagongsheHuagongshe Chemistry Print Report · For research reference only
Hydrochloric Acid → HCID 136045961, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Dabco | HCID 9237 | — |
| Reactant | HCID 53887906 | HCID 53887906 | — |
| Catalyst | Chlorotris(triphenylphosphine)rhodium(I) | HCID 84599 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | HCID 136045961 | HCID 136045961 | 84.9% |
Reaction Steps
2-(4-Allyloxy-3-methyl-benzofuran-2-yl)-thiazole-4-carboxylic acid ethyl ester (28 mg) in 80% aqueous ethanol (6 ml) was stirred in the presence of chlorotris(triphenylphosphine)rhodium (3 mg) and triethylenediamine (2 mg) at 90° C. for 6 hours. The reaction mixture was poured into 1N aqueous hydrochloric acid and extracted with ethyl acetate. The combined organic extracts were washed with brine and dried over magnesium sulfate. Evaporation of the solvent under reduced pressure gave 2-(4-hydroxy-3-methyl-benzofuran-2-yl)-thiazole-4-carboxylic acid ethyl ester as a white solid (21 mg). FAB-MS: m/z 304 (MH+).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06376491B1 |
| Source dataset | uspto-grants-2002_04 |
| ORD ID | ord-b8cae657f3cf4449ba2ab910484a972a |
| Source note | uspto-grants-2002_04 |