From: Jacob Zabicky (zabicky$##$bgumail.bgu.ac.il)
Date: Tue Feb 11 2003 - 11:05:39 EST
Dear Bert,
Sorry for that, but it goes to show! . . . When looking for Dische and
other "alte Sachen" you can throw the CD-ROM version away! . . . The
following is found in "Ye Olde Seventh" inexpensive/reliable/obsolete
edition:
Dische Reaction
=============
Z. Dische, Mikrochemie, 8, 4 (1930).
The reaction between the Dische reagent (diphenylamine, acetic acid and
sulfuric acid) and 2-deoxypentoses resulting in the development of a blue
color. The reaction depends on the conversion of the pentose to
omega-hydroxylevulaldehyde which then reacts with diphenylamine to give a
mixture of blue colored complexes.
W. G. Overend, F. Stafizadeh and M. Stacey, J. Chem. Soc. 1949, 1222; R. E.
Deriaz, M. StAcey, E. G. Teece and L. F. Wiggins, J. Chem. Soc. 1950, 1027.
Have fun,
Jacob
At 16:45 10/2/2003, Bert Kruiswijk wrote:
>Dear Jacob,
>
>I can't find it in my Merck index. I have edition 13, CDROM.
>
>Bert.
>
>--------------------------------------------
>Dr. E. Kruiswijk
>Birkbeck college
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>020-76794631
>
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>-----Original Message-----
>From: everybody-admin$##$orglist.net [mailto:everybody-admin$##$orglist.net]
>On Behalf Of Jacob Zabicky
>Sent: 10 February 2003 13:24
>To: Bert Kruiswijk; everybody
>Subject: Re: ORGLIST:Dische
>
>
>Hello,
>
>Indeed, it's a reaction of analytical significance. It is listed in the
>Organic Name Reactions section of the Merck Index, with some literature
>citations.
>
>All the best,
>
>Jacob
>
>At 15:55 9/2/2003, Bert Kruiswijk wrote:
>>Dear All,
>>
>>Does someone have any idea what the Dische reaction is, I have a Houben
>
>>Weyl reference (E3, 678)but that doesn't mention much except a Analysis
>
>>publication 1976, 4, 471. I can't even trace this journal. Any help is
>>welcome.
>>
>>Thanks.
>>
>>Bert Kruiswijk.
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Prof. Jacob Zabicky
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