HuagongsheHuagongshe Chemistry Print Report · For research reference only
Boron tribromide → 56911-04-7
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Boron tribromide | HCID 25134 | — |
| Reactant | 2,1-Benzisothiazole, 4-methoxy- | HCID 12255800 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | 56911-04-7 | HCID 135794337 | — |
Reaction Steps
A mixture of 6.3 g. 4-methoxy-2,1-benzisothiazole, 28.5 g. boron tribromide, and 180 ml. methylene chloride was heated at reflux temperature 17 hours to give 5.1 g. 4-hydroxy-2,1-benzisothiazole as a yellow solid, mp. 184.5°-186.5° after recrystallization from benzene. This structure was confirmed by nmr.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03997548 |
| Source dataset | uspto-grants-1976_12 |
| ORD ID | ord-aab8b1d7d455445fbbef07ee26460dc7 |
| Source note | uspto-grants-1976_12 |