Nitroxyl containing compounds

C - Chemistry – Metallurgy – 07 – D

Patent

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C07D 211/94 (2006.01) C07D 207/46 (2006.01) C07D 405/12 (2006.01)

Patent

CA 2245779

The present invention is a compound of formula (I) wherein T is a group which will either 1) react with a polydienyl lithium such that the polydiene will be terminated with the compound of formula (I), or 2) be displaced by a polydienyl anion placing the molecule attached to T on the polydiene chain- end, Ar is an aromatic group having 1 or 2 aromatic rings, R, R1 and R2 are each independently hydrogen or a C1-6 alkyl group, and R3, R4, R5, R6, R7 and R8 are each independently phenyl, C1-C6 alkyl, or alternatively, 2 groups selected from R3-R8 may combine such that a 5- or 6-membered ring containing the N of the nitroxyl group is formed.

La présente invention est un composé de la formule (I) dans laquelle T représente un groupe, lequel soit 1) réagit avec un polydiényle lithium de manière que le polydiène est terminé par le composé de la formule (I), soit 2) est déplacé par un anion polydiényle plaçant la molécule fixée à T sur l'extrémité de la chaîne de polyidène, Ar représente un groupe aromatique présentant 1 ou 2 cycles aromatiques, R, R?1¿ et R?2¿ représentent chacun indépendamment hydrogène ou un groupe alkyle C¿1?-C¿6?, et R?3¿, R?4¿, R?5¿, R?6¿, R?7¿ et R?8¿ représentent chacun indépendamment phényle, alkyle C¿1?-C¿6? ou alternativement 2 groupes choisis parmi R?3¿ à R?8¿, peuvent se combiner de sorte qu'un cycle à 5 ou 6 éléments contenant le N du groupe nitroxyle est formé.

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