HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 661833Generated: November 1, 2026
Homophthalic anhydride → HCID 68746412, compound
https://huagongshe.com/reaction/661833
Participants
| Role | Name | HCID | Charge |
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| Reactant | Homophthalic anhydride | HCID 12801 | — |
| Reactant | 3-Bromo-o-toluidine | HCID 123538 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | HCID 68746412 | HCID 68746412 | 36% |
Reaction Steps
Step 1 A mixture of 3-bromo-2-methylaniline (1 g, 5.37 mmol) and isochroman-1,3-dione (0.872 g, 5.37 mmol) in acetic acid (15 mL) was heated overnight at 100° C. in a sealed tube. The mixture was cooled to rt and concentrated, and the residue was purified by column chromatography (eluting with a gradient from 80:20 hexane-EtOAc to EtOAc) to give 2-(3-bromo-2-methylphenyl)isoquinoline-1,3(2H,4H)-dione as a tan solid (630 mg, 36%). Mass spectrum m/z 330, 332 (M+H)+.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08084620B2 |
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| Source dataset | uspto-grants-2011_12 |
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| ORD ID | ord-91b74d24ddcf4fe58461e27f3f903803 |
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| Source note | uspto-grants-2011_12 |
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