Patent · US Active

Process for preparing carboxamides by hydrolysis carboxylic acid nitriles in the presence of a catalyst comprising manganese dioxide

US8334406B2 · kind B2 · utility

0Cited by

11References

27Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Alexander May · Seeheim-Jugenheim, DE
Jochen Ackermann · Heilbad Heiligenstadt, DE
Hermann Siegert · Weiterstadt, DE
Bernd Vogel · Wiesbaden, DE
Soenke Broecker · Ober-Ramstadt, DE

Key dates

Filing date	Aug 30, 2007
Grant date	Dec 18, 2012
Priority date	—
Expiry date	Mar 11, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C231/065
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing carboxamides by hydrolysing carbonitriles in the presence of a catalyst comprising manganese dioxide, wherein the reaction mixture added to the catalyst comprising manganese dioxide has a pH in the range of 6.0 to 11.0 and the hydrolysis is performed in the presence of an oxidizing agent. The present invention further relates to a process for preparing alkyl (meth)acrylates, the process having a hydrolysis step according to the process described above.

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