C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 239/52 (2006.01) C07C 59/64 (2006.01)
Patent
CA 2605323
The present invention relates, inter alia, to a process for preparing a compound of formula (I): which comprises either (a) reacting a compound of formula (II): with 2-cyanophenol, or a salt thereof, in the presence of between 0.1 and 2 mol % of 1 ,4-diazabicyclo[2.2.2]octane, or (b) reacting a compound of the formula (III): with a compound of the formula (IV): in the presence of between 0.1 and 2 mol % of l,4-diazabicyclo[2.2.2]octane; where W is the methyl (E)-2-(3-methoxy)acrylate group C(CO 2CH 3)=CHOCH 3 or the methyl 2-(3,3-dimethoxy)propanoate group C(CO 2CH 3)CH(OCH 3) 2, or a mixture of the two groups. In addition, the present invention relates to a novel precursors of the compound of formula (I) and methods for making them.
L'invention concerne, notamment, un procédé de préparation d'un composé de formule (I), qui consiste soit (a) à faire réagir un composé de formule (II) avec 2-cyanophénol, ou un sel de celui-ci, en présence de 0,1 à 2 mol% de 1 ,4-diazabicyclo[2.2.2]octane, soit (b) à faire réagir un composé de formule (III) avec un composé de formule (IV), en présence de 0,1 à 2 mol% de 1 ,4-diazabicyclo[2.2.2]octane; W représentant le groupe méthyle (E)-2-(3-méthoxy)acrylate C(CO 2CH 3)=CHOCH3 ou le groupe méthyle 2-(3,3-diméthoxy)propanoate C(CO2CH3)CH(OCH3)2, ou un mélange des deux groupes. En outre, l'invention concerne un nouveau précurseur du composé de formule (I) et des procédés de fabrication associés.
Boyd Ewan Campbell
Vass Jack
Whitton Alan John
Fetherstonhaugh & Co.
Syngenta Limited
Syngenta Participations Ag
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