Revisiting the aldol reaction of cis-α,β-epoxyaldehyde promoted by BF3·Et2O: direct access to 2-deoxy-2-fluoro heptulosonic ester analogues
2010
The aldol reaction between cis-3-((tert-butyldiphenylsilyloxy)methyl)oxirane-2-carbaldehyde and ethyl-2-(trimethylsilyloxy)-2-propenoate promoted by boron trifluoride diethyl etherate was reinvestigated. By varying the work-up conditions, a new 2-deoxy-2-fluoro heptulosonic ester analogue was synthesized. Derivatizations and detailed NMR analysis allowed the complete characterization of this fluoro analogue and its derivatives.
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