Re: ORGLIST:RCM on bis allyl urea

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From: Hoyer (alihoyer$##$mobilixnet.dk)
Date: Sat Mar 15 2003 - 15:00:43 EST


Try doing RCM on bis-allyl urea to see if it is the THP-groups that inhibit
the reaction. Chelation by oxygen has been known to deactivate RCM
catalysts.

Thomas Hoyer

----- Original Message -----
From: "e.kruiswijk" <b.kruiswijk$##$bbk.ac.uk>
To: "everybody" <everybody$##$orglist.net>
Sent: Friday, March 14, 2003 10:08 AM
Subject: ORGLIST:RCM on bis allyl urea

> Dear All,
>
> We are trying to do a RCM, using first generation Grubbs on bis allyl
> urea on both nitrogens there is also a OTHP group. Reaction in DCM room
> temperature or reflux (degassed and dry) gives only decomposed starting
> material with catalyst load 20 mol%, lower loads only give starting
> material. Any suggestions.
>
> Thanks,
>
> --------------------------------------------
> Dr. E. Kruiswijk
> Birkbeck college
> 29 Gordon Square
> London WC1H 0PP
> 020-76794631
>
> --------------------------------------------
>
>
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