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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 638661Generated: November 1, 2026

Dimethylamine → 2,4-Dimethylspiro[5.5]undeca-1,4,8-trien-3-one

https://huagongshe.com/reaction/638661

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylamineHCID 674—
ReactantFormaldehydeHCID 712—
Reactant1,3-ButadieneHCID 7845—
Reactant2,6-DimethylphenolHCID 11335—
SolventIsopropanolHCID 3776—
Product2,4-Dimethylspiro[5.5]undeca-1,4,8-trien-3-oneHCID 13531455—

Reaction Steps

Following the same general procedure as in Example I, 50 mmols of 2,6-dimethylphenol were reacted with 55 mmols of paraformaldehyde, 12.5 mmols of aqueous dimethylamine, and 100 mmols of 1,3-butadiene in 54 g of isopropyl alcohol at about 190° C. for 9-10 hours. The process resulted in the formation of 2,4-dimethylspiro[5.5]undeca-1,4,8-trien-3-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04562293
Source datasetuspto-grants-1985_12
ORD IDord-47df2dd8f3cf43a28897ee350faee14a
Source noteuspto-grants-1985_12