Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Acetyl chloride | HCID 6367 | — |
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | Pyrrole | HCID 8027 | — |
| Reactant | 1-(2-Hydroxyethyl)pyrrole | HCID 10975438 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | HCID 12674764 | HCID 12674764 | — |
Reaction Steps
Once the 1-(2-hydroxyethyl)pyrrole is obtained, it is esterified by any suitable means known in the art. For example, acetic acid is reacted with the 1-(2-hydroxyethyl)pyrrole in the presence of a strong acid such as sulfuric acid, and the reaction mixture is heated sufficiently to distill off the water that is formed as a result of the reaction. Preferably however, the pyrrole is reacted with acetyl chloride or acetic anhydride in a suitable solvent wherein there is a molar excess of the acetyl chloride or acetic anhydride. This reaction takes place at room temperature and will be completed in a relatively short period of time, with only an hour or two at the most being required for the reaction to reach completion. The 1-(2-acetoxyethyl)pyrrole is then isolated and purified by any means known in the art, such as extraction with a suitable organic solvent and removal of the solvent, to yield the desired compound represented by Formula (3).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04560699 |
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| Source dataset | uspto-grants-1985_12 |
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| ORD ID | ord-4e2442e08a1341dd8bb8aee103845cde |
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| Source note | uspto-grants-1985_12 |
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