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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1284160Generated: October 25, 2026

Benzene → 1,1-Diethoxy-3-methyl-2-butene

https://huagongshe.com/reaction/1284160

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzeneHCID 241—
ReactantBenzoic AcidHCID 243—
Reactant3,7,11,15,19-Pentamethyl-2,6-eicosadienalHCID 53817517—
Product1,1-Diethoxy-3-methyl-2-buteneHCID 5215320—

Reaction Steps

0.1 Part of the reaction product, 1.74 parts of benzene, and 0.00018 part of benzoic acid were charged into a sealed tube, and reacted at 250°C. for 10 minutes. The product was subjected to gas chromatography analysis. It was thus confirmed that 3,7,11,15,19-pentamethyl-2,6-eicosadienal was obtained at the selectivity of 69.5% to the originally fed β-methyl-crotonaldehyde diethylacetal. The analytical value of the resulting acetal and aldehyde is shown in Table 16.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03978092
Source datasetuspto-grants-1976_08
ORD IDord-9608f64b06d74ba694ee1a5dc8811c3d
Source noteuspto-grants-1976_08