Efficient generation of β-L-rhamnosidic linkages by the 2-ulosyl donor approach: Synthesis of a trisaccharide with a central β-L-rhamnose unit was written by Lichtenthaler, Frieder W.;Metz, Thomas. And the article was included in European Journal of Organic Chemistry in 2003.SDS of cas: 10030-85-0 This article mentions the following:
Practical procedures for the production of variously blocked 6-deoxy-α-L-arabino-2-ketohexosyl bromides from L-rhamnose have been developed. These compounds are highly useful as indirect β-L-rhamnosyl donors: they undergo β-specific glycosidations under Koenigs-Knorr conditions, and the 2-keto group of the resulting 6-deoxy-β-L-hexosiduloses is reduced with high β-L-rhamno selectivity. The straightforward application of this 2-ulosyl donor approach for the synthesis of β-L-rhamnose-containing di- and trisaccharides is demonstrated. In the experiment, the researchers used many compounds, for example, (2R,3R,4S,5S)-2,3,4,5-tetrahydroxyhexanal hydrate (cas: 10030-85-0SDS of cas: 10030-85-0).
(2R,3R,4S,5S)-2,3,4,5-tetrahydroxyhexanal hydrate (cas: 10030-85-0) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.SDS of cas: 10030-85-0
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts