Patent ID: 7026495
Filing Date: 2006-04-11
Classification: B01J,C07F

Abstract:
1. A method of preparing a metathesis-active metal carbene complex with a chelating carbene ligand comprising contacting the metathesis-active metal carbene complex with an internal olefin ligand precursor of the formula: wherein R R Y is a heteroatom selected from the group oxygen (O), sulfur (S), nitrogen (N), or phosphorus (P); n is 1, in the case of a divalent heteroatom such as O or S, or 2, in the case of a trivalent heteroatom such as N or P; and Z is a group selected from hydrogen, alkyl, aryl, functionalized alkyl, functionalized aryl where the functional group(s) may independantly be one or more or the following: alkoxy, aryloxy, halogen, carboxylic acid, ketone, aldehyde, nitrate, cyano, isocyanate, hydroxyl, ester, ether, amine, imine, amide, sulfide, disulfide, carbamate, silane, siloxane, phosphine, phosphate, or borate.