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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2059264Generated: October 31, 2026

Phthalic Anhydride → HCID 12248790, compound

https://huagongshe.com/reaction/2059264

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalic AnhydrideHCID 6811—
Reactant2,5-Dimethyl-1H-indoleHCID 70965—
Solvent1,2-DichloroethaneHCID 11—
ProductHCID 12248790HCID 1224879065.5%

Reaction Steps

A mixture of 5.0 g (0.034 mole) of phthalic anhydride and 5.0 g (0.034 mole) of 2,5-dimethylindole in 30 ml of ethylene dichloride was refluxed for 20 hours, cooled and the separated solid filtered off and dried to obtain 3.8 g of 2-[(2,5-dimethyl-3-indolyl)carbonyl]benzoic acid (Formula VIII: R°=R1 =R2 =R3 =R6 =H; R5 =CH3 ; Y1 =CH3) as a pink-colored solid melting at 198°-200° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04322352
Source datasetuspto-grants-1982_03
ORD IDord-0b6b376f62f34916892964075ad9ec70
Source noteuspto-grants-1982_03