Olefin metathesis by molybdenum imido alkylidene catalysts

✍ Scribed by Richard R. Schrock

• Publisher: Elsevier Science
• Year: 1999
• Tongue: French
• Weight: 745 KB
• Volume: 55
• Category: Article
• ISSN: 0040-4020
• DOI: 10.1016/s0040-4020(99)00304-x

✦ Synopsis

A "well-defined" alkylidcne complex of the type Mo(CHCMc2Ph)(N-2,6-i-Pr2C6H3)[OCMe(CF3)2] 2 has proven to be a useful initiator in catalytic olefin metathesis reactions of interest to organic chemists. A variety of related molybdenum imido alkylidene complexes can be prepared readily from a common precursor. This article is a summary of what is known about the details of the steps in a metathesis reaction catalyzed by complexes of the type Mo(CHR~(NAr)(OR)2 , and how the activity and stability of complexes of this type change upon altering each of the ligands in the pseudo-tetrahedral species. Some recent asymmetric ring-closing metathesis reactions are also discussed briefly.