Patent · US Expired

Process for the preparation of aromatic aldehydes

US7531697B2 · kind B2 · utility

1Cited by

1References

12Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Juan Jose Almena Perea · Marburg, DE
Axel Monsees · Frankfurt, DE
Renat Kadyrov · Rostock, DE
Thomas Riermeier · Wemding, DE
Kai Rossen · Hanau, DE
Wolf-Ruediger Krahnert · Obertshausen, DE
Matthias Beller · Ostseebad Nienhagen, DE
Stefan Klaus · Rostock, DE
Alexander Zapf · Rosenheim, DE

Key dates

Filing date	Mar 2, 2006
Grant date	May 12, 2009
Priority date	—
Expiry date	Mar 2, 2026

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2531/824
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

(Hetero)aromatic are prepared from halogen-substituted (hetero)aromatic compounds in the presence of a base and a palladium catalyst having a nonpyrophoric monodentate phosphane ligand. The phosphane ligand structure includes two radical groups having a tertiary carbon attached directly to phosphorous and one radical group having a primary carbon attached to the phosphorous.

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