Patent · US Expired

Method for producing aromatic aldehydes

US6313354A · kind A · utility

9Cited by

3References

9Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Thomas Markert · Monheim, DE
Ralph Nemitz · Frechen, DE

Key dates

Filing date	Sep 30, 1999
Grant date	Nov 6, 2001
Priority date	—
Expiry date	Sep 30, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C47/228
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of aromatic aldehydes comprising the steps of condensing a phenone ketal with a vinyl ether in the presence of a Lewis acid, subjecting the resulting acetal to acidic hydrolysis to form the corresponding .alpha.,.beta.-unsaturated aldehyde, and optionally hydrogenating the C.dbd.C double bond of said unsaturated aldehyde.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.