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2004
Thiazole derivatives
R 0260
Highly Enantioselective Reaction of Lithiated N-Boc-thiazolidine: A New Chiral
Anion Equivalent. — Lithiated thiazolidine (I) affords with aromatic and ali51- 098 Formyl
phatic aldehydes in the presence of (—)-sparteine mixtures of syn and anti alcohols.
Generally, the anti-isomers (IV) have higher enantiomeric purity than the syn-isomers.
For derivatives (IIIa) and (IVa), their conversion into the corresponding optically active
1,2-ethanediols without substantial racemization is demonstrated. — (WANG, L.;
NAKAMURA, S.; TORU*, T.; Org. Biomol. Chem. 2 (2004) 15, 2168-2169; Dep.
Appl. Chem., Nagoya Inst. Technol., Showa, Nagoya 466, Japan; Eng.) — Klein
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