Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Bentazon | HCID 2328 | — |
| Reactant | Sodium Cyanide | HCID 8929 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | Bromine | HCID 24408 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 22617261 | HCID 22617261 | — |
Reaction Steps
5.4 parts of sodium cyanide in 40 parts of water are added dropwise to 17.6 parts of bromine in 150 parts of water at from 5° to 10° C. A solution of 24 parts of 3-isopropyl-2,1,3-benzothiadiazin-4-one-2,2-dioxide and 4 parts of sodium hydroxide in 100 parts of water is then added and the mixture is stirred for 2 hours at 50° C. When it has cooled, the precipitate is filtered off and dried. 25 parts of 1-cyano-3-isopropyl-2,1,3-benzothiadiazin-4-one-2,2-dioxide of melting point 99°-101° C. are obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04200743 |
|---|
| Source dataset | uspto-grants-1980_04 |
|---|
| ORD ID | ord-b32426e6149d4eaeb55639c4e762a38c |
|---|
| Source note | uspto-grants-1980_04 |
|---|
