Comments on: Storage of Grubbs Catalysts

By: Akim Abdullahi

Akim Abdullahi — Tue, 10 Apr 2012 12:58:05 +0000

I am currently working on a project for my Instrumental Analysis course, where I synthesized a complex using the grubbs catalyst. I found the catalyst was soluble in CH2CL2.

By: Ken Caster

Ken Caster — Wed, 04 May 2011 07:56:04 +0000

The need for stability really depends on how you plan to use the catalyst and how much control you need. Some years ago we did an evaluation of how fast Grubbs’ 1st generation catalyst decomposes when rapidly stirring in the open air (deep vortex) in methylene chloride at room temperature (see figure 5 in Journal of Molecular Catalysis A: Chemical 190 (2002) 65–77). While it remained very active for quite some time, I have no idea how oxidative decomposition affected Mwt and polydispersity. We also stored the solid catalyst open to the air (covered to keep off dust and to protect from light) on the benchtop for months and could see no drop in catalyst activity in simple gel tests. Again, I don’t know how this may have affected Mwt or polydispersity of the resulting polymer. These findings did prompt our investigation of gas-solid ROMP to make surface-attached polymers, which worked quite nicely.

By: hirendra

hirendra — Tue, 03 May 2011 23:47:33 +0000

what is a good solvent to dissolve Grub catalyst

By: Tristan

Tristan — Thu, 17 Feb 2011 03:23:33 +0000

Has anybody tried the method Jason mentioned? Does it work?

By: Jason Woertink

Jason Woertink — Wed, 10 Mar 2010 15:24:40 +0000

What about the method where you dissolve the catalyst in paraffin wax and add pieces of wax to the reaction mixture?