Patent · US Expired

Preparation of acetals of malonaldehyde

US4410733A · kind A · utility

3Cited by

0References

9Claims

0Family size

Assignee

BASF SE

Inventors

Dietrich Mangold
Josef Wahl · Schifferstadt, DE
Wolf-Karlo Aders · Ellerstadt, DE

Key dates

Filing date	Jan 6, 1982
Grant date	Oct 18, 1983
Priority date	—
Expiry date	Jan 6, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C41/54
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Acetals of malonaldehyde are prepared by reacting an orthoester with a vinyl ether in the presence of a catalytic amount of FeCl.sub.3. The malonaldehyde acetals obtainable by the process according to the invention are valuable intermediates in the preparation of dyes, crop protection agents and drugs.

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