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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 262041Generated: October 27, 2026

Benzoic acid, 2-[(1-ethyl-2-methyl-1H-indol-3-yl)carbonyl]- → Phthalide

https://huagongshe.com/reaction/262041

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzoic acid, 2-[(1-ethyl-2-methyl-1H-indol-3-yl)carbonyl]-HCID 3084978—
Reactant3-(2'-Carboxybenzoyl)-1-n-pentyl-2-methyl-indoleHCID 20565148—
ProductPhthalideHCID 6885—

Reaction Steps

If the 3-(2'-carboxybenzoyl)-1-ethyl-2-methyl-indole in Example 1 is replaced by an equimolar amount of 3-(2'-carboxybenzoyl)-1-n-pentyl-2-methyl-indole, with the procedure otherwise being as described in Example 1, there is obtained 3.6 g of a phthalide compound of the formula ##STR15## which melts at 162°-163° C. The colour former develops on silton clay a blue colour of λ max. 600 nm.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04153609
Source datasetuspto-grants-1979_05
ORD IDord-87395fba40eb4478a660557c5a4f5db5
Source noteuspto-grants-1979_05