HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 251936Generated: October 31, 2026
Sulfuric Acid → 6-chloro-7-methyl-1H-indole-2,3-dione
https://huagongshe.com/reaction/251936
Participants
| Role | Name | HCID | Charge |
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| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | HCID 57374294 | HCID 57374294 | — |
| Product | 6-chloro-7-methyl-1H-indole-2,3-dione | HCID 4513067 | 56.5% |
Reaction Steps
To 2.5 g of concentrated sulfuric acid was added 2.5 g of N-(3-chloro-2-methylphenyl)-2-(hydroxyimino)acetamide at 50° C., and the mixture was stirred at 80° C. for 30 minutes. The reaction mixture was poured into 200 g of ice, and a deposited precipitate was collected by filtration to obtain 1.3 g of 6-chloro-7-methyl-1H-indole-2,3-dione of the formula:
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07867949B2 |
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| Source dataset | uspto-grants-2011_01 |
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| ORD ID | ord-fe57f814ca4643388a4ed882e1d37ad3 |
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| Source note | uspto-grants-2011_01 |
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