C. Andreu et al., ENZYMATIC ESTERIFICATION OF BICYCLIC MESO-DIOLS DERIVED FROM 1,4-BIS(HYDROXYMETHYL)FURAN - AN ENANTIOSELECTIVE DIELS-ALDER REACTION EQUIVALENT, Tetrahedron : asymmetry, 9(17), 1998, pp. 3105-3114
meso-Diols derived from the Diels-Alder adduct 1,4-bis(hydroxymethyl)f
uran/dimethyl acetylenedicarboxylate can be enantioselectively monoace
tylated under CRL or PSL catalysis with very good yields and moderate
to excellent ees. (+)-Monoacetates are always preferentially formed in
the reactions catalyzed by CRL, and their (-)-enantiomers are the mai
n products in the acetylations under PSL catalysis. Absolute configura
tions have been determined by X-ray analysis of a single crystal of an
(R)-alpha-methoxyphenylacetyl derivative. (C) 1998 Elsevier Science L
td. All rights reserved.