Stable and highly tunable metathesis catalysts

摘要

The present invention relates to catalytically active compounds of the general formula (1) that are highly tunable, as well as to a method of their preparation and their use in any type metathesis reaction. The new compounds of the present invention comprise activation sites that allow for specific catalyst design. Particularly, side chains and ligands allow efficient activity and specificity control of the catalysts of the present invention.;

主权项

1. A compound of formula 1, wherein,
X and X′ are anionic ligands;L is an uncharged ligand;z is a methylene or a carbonyl group;each of a, b and c is independently H, NO2 or a substituted or unsubstituted, charged or uncharged hydrocarbon group comprising up to 20 carbon atoms or a heteroatom-containing hydrocarbon group comprising up to 20 carbon atoms and one or more heteroatoms;each of R1, R2 and R3 is independently H or a substituted or unsubstituted, charged or uncharged hydrocarbon group comprising up to 20 carbon atoms or a heteroatom-containing hydrocarbon group comprising up to 20 carbon atoms and optionally comprising one or more heteroatoms.