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Synthesis 2002(14): 1973-1978
DOI: 10.1055/s-2002-34377
DOI: 10.1055/s-2002-34377
PAPER
© Georg Thieme Verlag Stuttgart · New York
Highly Diastereoselective Ketone Aldol Reactions of Butane-2,3-diacetal Desymmetrised Glycolic Acid
Further Information
Received
13 June 2002
Publication Date:
26 September 2002 (online)
Publication History
Publication Date:
26 September 2002 (online)
Abstract
Butane-2,3-diacetal (BDA) desymmetrised glycolic acid building block 1 undergoes highly diastereoselective lithium enolate ketone aldol reactions with a range of methyl and mono-substituted methyl ketones to yield, after acid-catalysed deprotection, enantiopure α,β-dihydroxy acid derivatives bearing a quaternary carbon atom at the β-hydroxy centre.
Key words
diastereoselective reaction - ketone - aldol reaction - α-hydroxy acid - asymmetric synthesis
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