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Abstract
An alternative method of preparation for a range of proline derived chiral lithium amide bases is described. (S)-2-(Pyrrolidinomethyl) pyrrolidine, prepared by the new route, has been used to deprotonate cis and trans tbutyldimethylsiloxy-3,4-epoxycyclopentane enantioselectively, thus generating chiral cis and trans tbutyldimethylsiloxy-2-cyclopenten-4-ols. The products had higher enantiomeric purity than those produced when the base was prepared by a previously reported method.
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