Skip to main content
Download PDF
- Main
A Well-Defined, Silica-Supported Tungsten Imido Alkylidene Olefin Metathesis Catalyst
Abstract
The reaction of [W(=NAr)(=CHtBu)(CH2tBu)2] (1; Ar = 2,6-iPrC6H3) with a silica partially dehydroxylated at 700oC, SiO2-(700), gives syn-[(_SiO)W(=NAr)(=CHtBu)(CH2tBu)] (2) as a major surface species, which was fully characterized by mass balance analysis, IR, NMR, EXAFS, and DFT periodic calculations. Similarly, complex 1 reacts with [(c-C5H9)7Si7O12SiOH] to give [(SiO)W(=NAr)(=CHtBu)(CH2tBu)] (2m), which shows similar spectroscopic properties. Surface complex 2 is a highly active propene metathesis catalyst, which can achieve a TON of 16000 within 100 h, with only a slow deactivation.
Main Content
For improved accessibility of PDF content, download the file to your device.
Enter the password to open this PDF file:
File name:
-
File size:
-
Title:
-
Author:
-
Subject:
-
Keywords:
-
Creation Date:
-
Modification Date:
-
Creator:
-
PDF Producer:
-
PDF Version:
-
Page Count:
-
Page Size:
-
Fast Web View:
-
Preparing document for printing…
0%