Re: ORGLIST: Use of Potassium Hydride

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From: srinivas reddy (gounisrinivas$##$yahoo.com)
Date: Fri Sep 08 2006 - 03:19:22 EDT

hi,
here is a procedure from orgsyn.org on how to use
potassium hydride (KH). here is the link.

regards
Srinivas

http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv8p0553

--- Christopher Luus <cluu0433$##$mail.usyd.edu.au>
wrote:

> Can anybody advise me as to the correct use of
> potassium hydride (KH) in
> the conversion of a ketone to the corresponding
> enolate salt? The KH is
> supplied as an ~35% dispersion in mineral oil and
> appears as a while
> sediment at the bottom of the bottle with a thick
> layer of mineral oil
> above it. I am not sure if the 35% refers to the
> sediment or whether I
> should homogenize the dispersion before use? I also
> wish to avoid having
> to wash the dispersion due to obvious reasons of
> stability.
>
> Any advice would be appreciated.
>
> Regards,
> Christopher Luus.
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