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US 9,079,173 B2Granted
Highly Z-selective olefins metathesis
AssigneesMassachusetts Institute of Technology, Trustee of Boston College
InventorsRichard R. Schrock, Annie J. King, Yu Zhao, Margaret M. Flook, Amir H. Hoveyda
Life of this patent
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Abstract
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.
Claims26
A metal complex having the structure:
- wherein:
- M is Mo or W;
- R1 is aryl, heteroaryl, alkyl, or heteroalkyl, optionally substituted;
- R2 and R3 can be the same or different and are hydrogen, alkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, or heteroaryl, optionally substituted;
- and
- R4 and R5 can be the same or different and are alkyl, heteroalkyl, aryl, heteroaryl, silylalkyl, or silyloxy, optionally substituted, wherein at least one of R4 or R5 is a ligand containing oxygen bound to M, and
- wherein the ligand containing oxygen bound to M is hexaisopropylterphenolate (O-2,6-(2,4,6-i-Pr3C6H2)2C6H3).
4 more elements
Dependencies are inferred from the claim text.