From: srinivasa gopalan (arulmari$##$yahoo.com)
Date: Fri Oct 06 2006 - 15:55:52 EDT
Dear Peng,
I saw your attachment with reaction and structures.
the reason you get mixture may be because, bases like
NaH and NaOH would remove your acetates on sugar
and the N-Ac as well.
your heterocyclic ketone - would probably exist as
an aromatic indole-like structure resulting in a
phenol-like alcohol.
You should try Koenings-Knorr conditions using
mercury salts or silver triflate.
Good Luck
-arulmari
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> Message: 1
> Date: Thu, 5 Oct 2006 03:16:36 +0530 (IST)
> From: "R. Muruga Nantham" <rmanand$##$iitb.ac.in>
> Subject: ORGLIST: (no subject)
> To: everybody$##$orglist.net
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<2081.10.1.202.22.1159998396.squirrel$##$gpo.iitb.ac.in>
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> any body suggest a method for synthesis of
> beta-di-substituted nitro
> alkene. normal nitro aldol condensation reaction not
> working with ketone
>
> anand
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 06 Oct 2006 16:54:14 +0800
> From: "Peng Gao" <pgao00$##$st.lzu.edu.cn>
> Subject: ORGLIST: O-Glycosylation
> To: everybody$##$orglist.net
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> Dear all,
> Please see the attachment.What base should I
> use? I had tied all kinds of base
> from literature, but all faild.
>
> Base:Cs2CO3, NaOH, t-BuOK, NaH, NaOMe.
>
> The systems have no reaction or are very
> complex, I don¡¯t know why. It¡¯s
> hard to repeat the reactions in the literature.
>
> Any suggestion is welcome. Thanks.
>
>
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