American Cyanamid Company

Other

Basf Aktiengesellschaft

Idemitsu Kosan Company, Limited

Thomas Walter Drabb

Peter J Wepplo

Robert Paul Brigance

Robert Francis Doehner, Jr

There is provided a stereospecific process for the preparation of essentially enantiomerically pure imidazolinone herbicides having the R-configuration via (R) -amino- -dimethylbutyronitrile.

Process of the preparation of chiral nicotinic, quinolinic or benzoic acid imidazolinone herbicides

There is provided a stereospecific process for the preparation of essentially enantiomerically pure imidazolinone herbicides having the R-configuration via (R)2-amino-2,3-dimethylbutyronitrile.

Process for the preparation of chiral nicotinic, quinolinic or benzoic acid imidazolinone herbicides

The present invention provides compounds of formula I and processes for the preparation and purification thereof.

Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran herbicides and intermediates useful therein

There is provided a process for the dehalogenation of a compound of formula II via the use of a transition metal catalyst and ammonium formate at atmospheric pressure.

Process for the dehalogenation of thiochroman and dihydrobenzothiophene derivatives

The present invention provides compounds of formula I and processes for the preparation and purification thereof. ##STR1## Compounds of formula I are useful as intermediates in the manufacture of 6-(arylcarbonyl)-4-oximino-dihydrobenzothiopyran herbicidal agents.

Process for the preparation of

There is provided a process for the preparation of essentially enantiomerically pure imidazolinone herbicides having the R-configuration via (R)2-amino-2,3-dimethylbutyramide.

Process for the preparation of chiral imidazolinone herbicides

There is provided an effective and efficient, three step process for the manufacture of crop-selective, herbicidal 1-{�2- (cyclopropylcarbonyl)-phenyl!sulfamoyl}-3-(4,6-dialkoxy-2-pyrimidinyl)urea compounds, and an intermediate for use therein.

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Trenton, NJ, United States of America

Thomas Walter Drabb