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2005
Oxazole derivatives
R 0220
The Highly Diastereoselective Synthesis of Oxazolidines Derived from Ketones
Pseudoephedrine or Ephedrine. — Ephedrine (I) and pseudoephedrine (IV)
35- 138 and
react with methyl ketones under conditions A) to provide oxazolidines with moderate
diastereoselectivity. The method can be extended to the reaction with dimethyl acetylenedicarboxylate to form single enantiomeric products such as (VII). — (PAGE*, P.
C. B.; et al.; Synlett 2005, 6, 971-975; Dep. Chem., Loughborough Univ.,
Loughborough, Leicestershire LE11 3TU, UK; Eng.) — Mais
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