HuagongsheHuagongshe Chemistry Print Report · For research reference only
O-Phenylenediamine → 2,2'-(Thiobis(methylene))bis-1H-benzimidazole
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | O-Phenylenediamine | HCID 7243 | — |
| Reactant | Ammonium Hydroxide | HCID 14923 | — |
| Reactant | Thiodiglycolic acid | HCID 31277 | — |
| Solvent | Hydrochloric Acid | HCID 313 | — |
| Product | 2,2'-(Thiobis(methylene))bis-1H-benzimidazole | HCID 118378 | — |
Reaction Steps
A solution of 4.1 g (27.3 mmol) thiodiacetic acid and 4.9 g (27.3 mmol) o-phenylene diamine in 40 ml 4N HCl was stirred at reflux for 4 hours. The reaction mixture was cooled to room temperature an neutralised with conc. NH4OH. The formed precipitate was filtered, washed with water (3×40 ml) and dried under vacuum. Yield—2.4g (25.2%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07229943B2 |
| Source dataset | uspto-grants-2007_06 |
| ORD ID | ord-e8e4945a4b8e473bb2a6c2b863f34abe |
| Source note | uspto-grants-2007_06 |