March 16, 1999

This invention provides with novel hydantoin derivatives, processes for preparing them, and herbicides containing said derivatives as active ingredient. The hydantoin derivative of this invention represented by the general formula (1): ##STR1## is produced by reacting an arylisocyanate derivative or an arylisothiocyanate derivative represented by the general formula (2): ##STR2## with a dehydropipecolic acid derivative represented by the general formula (3): ##STR3##

2

March 16, 1999

08/836,154

August 18, 1997

504/246   504/221 504/225 544/105 544/52 546/121

A01N   43/90   (20060101)   C07D   471/04   (20060101)   C07D   471/00   (20060101)  

Dec 27, 1994 [JP] 6-3245536 May 22, 1995 [JP] 7-122054

546/121   504/246  

6060432 - Herbicidal sulfonamides - Owned by E. I. du Pont de Nemours and Company (Wilmington, DE) Degussa Aktiengesellschaft (Frankfurt,DE) Compounds of Formula I, and their N-oxides and agriculturally suitable salts, are disclosed which are useful for controlling undesired vegetation ##STR1## wherein X, Y, J, R.sup.1, and R.sup.2 are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula I and a method for controlling undesired vegetation which involves contacting the vegetation or its environment with an effective amount of a compound of Formula I.