N-heteroaryl-n'-(pyrid-2-ylsulfonyl)ureas, processes for...

Details N-heteroaryl-n'-(pyrid-2-ylsulfonyl)ureas, processes for... N-heteroaryl-n'-(pyrid-2-ylsulfonyl)ureas, processes for...

C - Chemistry, Metallurgy

07

D

C07D 401/12 (2006.01) A01N 47/36 (2006.01) A01N 55/10 (2006.01) C07D 213/76 (2006.01) C07D 213/78 (2006.01) C07D 213/89 (2006.01) C07D 401/14 (2006.01) C07D 413/14 (2006.01) C07D 417/14 (2006.01) C07D 491/044 (2006.01) C07D 521/00 (2006.01) C07F 7/10 (2006.01)

Patent

CA 2170283

Compounds of formula (I) or salts thereof, wherein R1-R4, W, A, n and m are defined as in claim 1, e.g. R1, R2 represent H, (subst.) alkyl, (subst.) alkenyl or alkinyl, (subst.) cycloalkyl, (subst.) aryl or acyl, and A represents (subst.) pyrimidinyl or triazinyl, are suitable for use as selective sulphonyl urea herbicides and plant growth regulators. The process for the production of (I) is analogous with known processes, while some of the intermediate products involved are novel, for example the appropriately substituted pyridyl sulphonamides (II) and N-tert.-butyl sulphonamides (VIII) disclosed in claim 5.

Les composés de la formule (I) ou leurs sels, dans laquelle R<1>-R<4>, W, A n et m ont la notation mentionnée dans la revendication 1, par exemple R<1>, R<2> = H, alkyle (subst.), alcényle ou alkinyle (subst.), cycloalkyle (subst.), aryle (subst.), aryle ou acyle, et A = pyrimidinyle ou triazinyle (subst.), s'utilisent comme sulfonylurées herbicides sélectives et comme régulateurs de croissance végétale. La préparation de (I) s'effectue de manière similaire aux procédés connus à l'aide de produits intermédiaires en partie nouveaux, par exemple de sulfamides de pyridyle (II) substitués de manière appropriée et des sulfamides de N-butyle tertiaire (VII) selon les procédés décrits dans la revendication 5.

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