HuagongsheHuagongshe Chemistry Print Report · For research reference only
Chlorosulfonic acid → 6-(Chlorosulfonyl)-1,7,8,9-tetrahydro-8-methyl-2H-pyrrolo[3,4-f]quinoxaline-2,3(4H)-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Chlorosulfonic acid | HCID 24638 | — |
| Reactant | 1,7,8,9-tetrahydro-8-methyl-2H-pyrrolo[3,4-f]quinoxaline-2,3(4H)-dione | HCID 10130626 | — |
| Product | 6-(Chlorosulfonyl)-1,7,8,9-tetrahydro-8-methyl-2H-pyrrolo[3,4-f]quinoxaline-2,3(4H)-dione | HCID 22742492 | — |
Reaction Steps
A solution of 1,7,8,9-tetrahydro-8-methyl-2H-pyrrolo[3,4-f]quinoxaline-2,3(4H)-dione in chlorosulfonic acid was stirred at 120° C. for 3 hours, whereafter it was cooled and poured on ice. This afforded a crystalline precipitate of the product, which was filtered off and washed with water, mp>300° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06703391B2 |
| Source dataset | uspto-grants-2004_03 |
| ORD ID | ord-17ac3bacb25a4d7096ab42d16b38ea72 |
| Source note | uspto-grants-2004_03 |