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Ampiphilic Carbohydrate-Based Mesogens, VI: Synthesis of a Series of Alkyl 1-Thio-D-glucopyranosides and Their Regioselective Reductions to 1-Alkylthio-1-deoxy-D-glucitols
Dahlhoff, Wilhelm V.
, p. 1025 - 1027 (2007/10/02)
Alkyl 1-thio-α,β-D-glucopyranosides (hexyl to decyl, 1a-e) are prepared by reaction of penta-O-acetyl-β-D-glucopyranose with the respective thiols in the presence of diethylether-trifluoroborane, followed by deacetylation. 1a-e are converted into their tetra-O-diethylboryl derivatives 2a-e and reduced with ethyldiboranes(6) in the presence of the catalyst 9-methylsulfonyloxy-9-borabicyclononane (9-BBN-mesylate, MSBBN) to give the mesogenic 1-alkylthio-1-deoxy-D-glucitols 3a-e after deboronation.
