Use of hydroxylamine derivatives, and method and...

Details Use of hydroxylamine derivatives, and method and... Use of hydroxylamine derivatives, and method and...

A - Human Necessities

01

N

A01N 37/28 (2006.01) A01N 37/52 (2006.01) A01N 43/10 (2006.01) A01N 43/40 (2006.01) A01N 43/60 (2006.01) A01N 43/88 (2006.01) A01N 47/24 (2006.01) A01N 47/28 (2006.01) A01N 47/44 (2006.01) C07C 259/10 (2006.01) C07C 259/18 (2006.01) C07D 213/82 (2006.01) C07D 241/24 (2006.01) C07D 295/088 (2006.01) C07D 413/04 (2006.01)

Patent

CA 2288075

This invention relates to the use of hydroxylamine derivatives of general formula (I), wherein R1 represents phenyl, N-heteroaryl, S-heteroaryl or a naphthyl group which may be substituted, an unsubstituted or substituted phenylamino or alkylamino or lower alkoxy; X represents halo, amino or an unsubstituted or substituted phenylamino group, or amino substituted with one or two lower alkyl or a hydroxy group; Y represents hydrogen, hydroxy or acyloxy, or if Y represents hydroxy, the molecule may contain a dioxazine ring closed at the carbon atom carrying the X group formed by formal XH elimination; R2 and R3, independently from each other, represent hydrogen or lower alkyl group; R2 and R3 along with the adjacent nitrogen atom form a 5- to 7-membered saturated hetero ring, to increase the tolerance of cultivated plants against weather condition stresses, such as cold, frost and drought.

L'invention concerne l'utilisation de dérivés d'hydroxylamine de formule générale (I), dans laquelle: R?1¿ représente un phényle, N-hétéroaryle, S-hétéroaryle, ou un groupe naphtyle pouvant être substitué, un phénylamino, un alkylamino ou un alkoxy inférieur substitué ou non, X représente halo, amino, ou un groupe phénylamino substitué ou non, ou amino substitué par un ou deux alkyles inférieurs ou par un groupe hydroxy, Y représente hydrogène, hydroxy, ou acyloxy, ou si Y représente hydroxy, la molécule peut renfermer un noyau dioxazinique fermé au niveau de l'atome de carbone porteur du groupe X, formé par élimination de XH, R?2¿ et R?3¿ représentent indépendamment hydrogène ou un groupe alkyle inférieur, R?2¿ et R?3¿ forment avec l'atome d'azote adjacent un noyau hétérocyclique saturé à 5 à 7 chaînons, afin de favoriser la tolérance de cultures végétales aux intempéries telles que le froid, le gel, et la sécheresse.

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