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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1982293Generated: October 26, 2026

Piperonal → 3-(3,4-Methylenedioxyphenyl)-6-dimethylaminophthalide

https://huagongshe.com/reaction/1982293

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperonalHCID 8438—
Reactant3-(Dimethylamino)benzoic acidHCID 66837—
Reactant3-(9-Ethyl-3-carbazolyl)-6-dimethylaminophthalideHCID 13651732—
SolventAcetic AnhydrideHCID 7918—
Product3-(3,4-Methylenedioxyphenyl)-6-dimethylaminophthalideHCID 136517336.1%

Reaction Steps

Following a procedure similar to that described in Example 1, part A above, 7.5 g of 3,4-(methylenedioxy)benzaldehyde and 9.1 g of 3-dimethylaminobenzoic acid were interacted in acetic anhydride to obtain 0.9 g of 3-(3,4-methylenedioxyphenyl)-6-dimethylaminophthalide (Formula II: R=CH3 ; X=H; Y=1-[3,4-(OCH2O)C6H3 ]) a light yellow solid melting over the range 134°-143° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04595768
Source datasetuspto-grants-1986_06
ORD IDord-ed6cc94c376e40f081c35897b183a98d
Source noteuspto-grants-1986_06