From: will jones (willjones46$##$hotmail.com)
Date: Mon May 29 2006 - 07:56:49 EDT
hydrazones will hydrolyse in acid, much like an imine would under neutral
aqueous conditions, so it might be that.
Alternatively, it could be that your hydrazone is volatile enough to
evaporate.
Will
>From: "sunil silvary" <sunil.orgchem$##$gmail.com>
>To: everybody$##$orglist.net
>Subject: ORGLIST: Hydrazone
>Date: Fri, 26 May 2006 16:01:18 -0400
>
>*Hi,*
>* *I am preparing the hydrazone of cyclohexenone by following the
>procedure given below in JOC,1994,59,6026-6029.But i am not getting any
>product.Is the following procedure wrong or am I doing anything wrong.
>Please let me know if you know any better method of hydrazone preparation .
>
>Thanking You,
>Sunil
>
>*General Procedure for the Synthesis of (Ethoxycarbony1)*
>
>*hydrazones *
>*. *The appropriate carbonyl compound
>
>(20.0 mmol) was added
>to a solution of ethoxycarbonylhydrazine
>
>(20.0
>mmol) and glacial acetic acid (10 drops) in EtOH
>
>(20 mL). The mixture was stirred at
>*rt *for 24 h. The volatile
>
>materials were removed in vacuo and the crude product
>
>recrystallized from
>a suitable solvent.
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