Re: ORGLIST:deoxygenation

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From: Yuehui Zhou (yuehuizhou$##$hotmail.com)
Date: Mon Oct 21 2002 - 05:59:53 EDT

Jocobo,

Excuse me for my questions but I'd like to learn more about the chemistry you mentioned. According to what you wrote, there seems to be a narrow choice of the methods for the reaction. Is the deoxygenation you mentioned basically a tranformation of sugar OH to other substituent without oxygen, such as R, X? What is the difference between this transformation and that in general organic chemistry? Thanks!

Yuehui

>From: Jacobo Cruces
>To: everybody@orglist.net
>Subject: ORGLIST:deoxygenation
>Date: Mon, 14 Oct 2002 16:27:38 +0200
>
>Dear all,
>
>Thanks for the answers to my question about deoxygenation of sugar
>derivatives. Though I have examined this topic very briefly, it
>seems there are not yet promising methods without using tin and a
>thiocarbonyl derivative, which can be applied to, at least, a
>minimum amount of product (for example, 10 grams if you are using
>the deoxysugar as a starting material for a synthetic route). The
>articles of Rizzo (JOC 1996, 61, 6092; ibid 1997, 62, 8257) make
>also use of a mechanism based on radicals, but this time
>photochemically induced, so it seems very difficult to apply the
>method to a larger quantity of product.
>
>I hope to obtain more information on this reading more recent
>papers.
>
>Best regards,
>
>
>
>
>Dr. Jacobo Cruces
>Research Manager
>GalChimia, S.L.
>Cebreiro, s/n O Pino
>15823 A Coruņa
>SPAIN
>
>Phone: +34 981 814 506
>Fax: +34 981 814 507
>Home: www.galchimia.com
>
>
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