HuagongsheHuagongshe Chemistry Print Report · For research reference only
p-Toluenesulfonic acid → 3-[1,3-Dioxo-4-benzamidoisoindolin-2-yl]-2,6-dioxo-5-hydroxypiperidine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | p-Toluenesulfonic acid | HCID 6101 | — |
| Reactant | HCID 22241179 | HCID 22241179 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | 3-[1,3-Dioxo-4-benzamidoisoindolin-2-yl]-2,6-dioxo-5-hydroxypiperidine | HCID 11682630 | — |
Reaction Steps
A solution of 3-[1,3-dioxo-4-benzamidoisoindolin-2-yl]-2,6-dioxo-5-acetoxypiperidine (1.36 g, 3.5 mmol) and p-toluenesulfonic acid (0.33 g, 1.8 mmol) in methanol (20 mL) is heated at reflux for 5 hours. The solvent is removed in vacuo to give 3-[1,3-dioxo-4-benzamidoisoindolin-2-yl]-2,6-dioxo-5-hydroxypiperidine which is further purified by column chromatography.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06458810B1 |
| Source dataset | uspto-grants-2002_10 |
| ORD ID | ord-92ef409f17694fbb8a1897eccdd03bb3 |
| Source note | uspto-grants-2002_10 |