Patent · US Expired

Process for preparing ortho-nitrobenzonitriles

US5705674A · kind A · utility

1Cited by

3References

16Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Thomas Wessel · Frankfurt, DE
Peter Koch · Frankfurt, DE

Key dates

Filing date	Aug 16, 1996
Grant date	Jan 6, 1998
Priority date	—
Expiry date	Aug 16, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C255/50
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing ortho-nitrobenzonitriles of the formula I, ##STR1## where R.sup.1 and R.sup.2 are as defined in claim 1, by reacting the corresponding ortho-fluoronitrobenzenes with alkali metal cyanides or cyanide-donating substances in the presence of phase transfer catalysts.

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