The improved method for preparing chloro acyl benzidine and benzidine

China Patent

PATENT NO 105392791
APP PUB NO CN-105392791-A
SERIAL NO

201480041369

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Abstract

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The present invention relates to the methods of the substitution acyl benzidine of preparation formula (I)Wherein R1Selected from shielded amino group, NO2、NH2And NHR3Wherein in a solvent, in the presence of alkali and palladium salt, in the case of the Phosphine ligands of formula (V) or its salt are as complex ligands, react the compound of formula (II) and the organoboron compound of formula (III), the compound of formula (II)The Phosphine ligands of formula (V)The organoboron compound of formula (III)Wherein all substituent groups are defined as in the description.

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Patent Owner(s)

Patent OwnerAddress
BAYER CROPSCIENCE AGDE40789 MONHEIM

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Inventor(s)

Inventor Name Address
BIELEFELDT DIETMAR -
DOCKNER MICHAEL DR -
J D HEINRICH -

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