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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 661833Generated: November 1, 2026

Homophthalic anhydride → HCID 68746412, compound

https://huagongshe.com/reaction/661833

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHomophthalic anhydrideHCID 12801—
Reactant3-Bromo-o-toluidineHCID 123538—
SolventAcetic AcidHCID 176—
ProductHCID 68746412HCID 6874641236%

Reaction Conditions

Temperature100 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08084620B2
Source datasetuspto-grants-2011_12
ORD IDord-91b74d24ddcf4fe58461e27f3f903803
Source noteuspto-grants-2011_12