Preparation of the 15-membered cycle (E,E,E)-1,6,11-tris[(2,4,6- triisopropylphenyl)sulfonyl]-1,6,11-triazacyclopentadeca-3,8,13-triene (8) is reported. This cyclic triolefin forms a stable Pd°complex 9 which catalyzes several cross-coupling reactions and can be recovered. Anchoring to a polystyrene framework affords a solid version of the catalyst, which is recovered by simple filtration and reused without loss of catalytic activity.
|Journal||European Journal of Organic Chemistry|
|Publication status||Published - 1 Jan 2000|