Ligands

C - Chemistry – Metallurgy – 07 – F

Patent

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C07F 15/00 (2006.01) B01J 31/00 (2006.01) C07F 9/02 (2006.01)

Patent

CA 2528238

A substituted paracyclophane is described of formula (I) wherein Xl and X2 are linking groups comprising between 2 to 4 carbon atoms, Y1 and Y2 are selected from the group consisting of hydrogen, halide, oxygen, nitrogen, alkyl, cycloalkyl , aryl or heteroaryl, Z1, Z2 and Z3 are substituting groups that optionally contain functional groups, a, b, c, d, e and f are 0 or l and a + b + c + d + e + f = 1 to 6. PreferablyX1 and X2 are -(C2H4)- and a + b + c + d + e + f = 1 or 2. The substituted paracyclophane provides transition metal catalysts that demonstrate high activity and selectivity for asymmetric reactions.

La présente invention concerne un paracyclophane substitué de formule (1) dans laquelle X?1¿ et X?2¿ sont des groupes de liaison entre 2 à 4 atomes de carbone, Y?1¿ et Y?2¿ sont choisis dans le groupe comprenant hydrogène, halogénure, oxygène, azote, alkyle, cycloalkyle, aryle et hétéroaryle, Z?1¿, Z?2¿ et Z?3¿ sont des groupes de substitution qui peuvent éventuellement contenir des groupes fonctionnels, a, b, c, d, e et f valent 0 ou 1, et a + b + c + d + e + f = 1 à 6. De préférence X?1¿ et X?2¿ sont -(C¿2?H¿4?)- et a + b + c + d + e + f = 1 ou 2. Le paracyclophane substitué comprend des catalyseurs à métal de transition qui ont une activité importante et une sélectivité élevée pour les réactions asymétriques.

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