Synthesis of cyclic compounds

Details Synthesis of cyclic compounds Synthesis of cyclic compounds

C - Chemistry, Metallurgy

07

D

C07D 307/20 (2006.01) C07C 53/19 (2006.01) C07C 59/347 (2006.01) C07D 307/33 (2006.01) C07D 307/58 (2006.01) C07D 307/60 (2006.01) C08F 224/00 (2006.01)

Patent

CA 2413336

A method for the preparation of a compound of formula (II) wherein R1 and R2 are independently H, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, optionally interrupted by one or more hetero atoms, straight chain or branched chain, hydrophilic, hydrophobic or fluorophilic; R3, R4, R5 and R6 are independently or all hydrogen or halogen; provided that at least two of the R3, R4, R5 and R6 are halogens.

La présente invention concerne un procédé de préparation de composés de formule II, dans laquelle R¿1? et R¿2? représentent indépendamment H, alkyle, alcoxy, oxoalkyle, alcényle, aryle, ou arylalkyle, substitués ou non, éventuellement interrompus par un ou plusieurs hétéroatomes, chaînes linéaires ou ramifiées, hydrophiles, hydrophobes ou fluorophiles; R¿3?, R¿4?,R¿5? et R¿6? représentent indépendamment hydrogène ou halogène; à condition que au moins R¿3? et/ou R¿4? et/ou R¿5 ?et/ou R¿6 ?représentent halogène; et dans laquelle R¿2? est tel que définit ci-dessus, R¿4? représente halogène; et enfin, R¿1? et R¿3? représentent individuellement ou ensemble hydrogène ou halogène.

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