Patent · US Expired

Preparation of benzophenone imines

US5679855A · kind A · utility

2Cited by

3References

14Claims

0Family size

Assignee

BASF SE

Inventors

Guido Voit · Freinsheim, DE
Martin Holderbaum · Ludwigshafen, DE
Tom Witzel · Ludwigshafen, DE
Alexander Aumuller · Neustadt, DE

Key dates

Filing date	Nov 21, 1995
Grant date	Oct 21, 1997
Priority date	—
Expiry date	Nov 21, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C249/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing benzophenone imines of the general formula I ##STR1## where R.sup.1 to R.sup.6 are hydrogen, C.sub.1 -to C.sub.4 -alkoxy, C.sub.1 -to C.sub.2 -alkylamine or C.sub.2 -to C.sub.4 -dialkylamine, by reacting benzophenones of the general formula II ##STR2## where R.sup.1 to R.sup.6 have the abovementioned meanings, in liquid ammonia in the presence of oxides of the elements boron, aluminum, gallium, indium, silicon, germanium, tin, lead, phosphorus, arsenic, antimony, bismuth, scandium, yttrium, titanium, zirconium, vanadium, niobium, tantalum or mixtures thereof at from 50.degree. to 150.degree. C. and from 50 to 350 bar is described.

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