[DE] PALLADIUM-KOMPLEXE AUF DER BASIS VON PYRROLIN-METALLKOMPLEXEN<br/>[EN] PALLADIUM-COMPLEXES BASED ON PYRROLINE-METAL COMPLEXES<br/>[FR] COMPLEXES DE PALLADIUM A BASE DE COMPLEXES METALLIQUES DE PYRROLINE
申请人:BAYER AG
公开号:WO2002081489A1
公开(公告)日:2002-10-17
Neue Palladium-Komplexe der Formel (I), in welcher R1, R2 und L die in der Beschreibung angegebenen Bedeutungen haben, ein Verfahren zum Herstellen dieser Stoffe und deren Verwendung als Katalysatoren.
Method for producing ketocarboxylic acid derivatives
申请人:——
公开号:US20030220517A1
公开(公告)日:2003-11-27
A novel process affords &ohgr;-ketocarboxylic acid derivatives of the formula (I)
1
in which
R
1
, R
2
, R
3
, and n are as defined in the description
by reaction of compounds of the formula (II)
2
with compounds of the formula (III)
3
or with compounds of the formula (IV)
4
in which
m is as defined in the description
in anhydrous hydrogen fluoride, if appropriate in the presence of boron trifluoride.
Novel &ohgr;-ketocarboxylic acid derivatives of the formula (If)
5
in which
R
1-1
, R
2−1
, R
3−1
and q are as defined in the description.