HuagongsheHuagongshe Chemistry Print Report · For research reference only
p-Toluenesulfonic acid → 1H-Benzimidazole-2-pentanamine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | p-Toluenesulfonic acid | HCID 6101 | — |
| Reactant | O-Phenylenediamine | HCID 7243 | — |
| Reactant | Caprolactam | HCID 7768 | — |
| Product | 1H-Benzimidazole-2-pentanamine | HCID 162387 | — |
Reaction Steps
A mixture of caprolactam (56.5 g; 0.5 mole) and o-phenylene diamine (54 g; 0.5 mole) was heated with p-toluene sulfonic acid (4.3 g; 0.025 mole) at 200°-225° for 7 hrs. under nitrogen. A quantitative yield of 2-(5-aminopentyl) benzimidazole was obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04235838 |
| Source dataset | uspto-grants-1980_11 |
| ORD ID | ord-bca88a66df8d41ddbacf83a453ec7cd7 |
| Source note | uspto-grants-1980_11 |