Synthesis of enantiomerically pure 3-aryloxy-2-hydroxypropanoic acids, intermediate products in the synthesis of cis-4-Aminochroman-3-ols
Oxidation of accessible (R)-3-chloropropane-1,2-diol to (R)-3-chloro-2-hydroxypropanoic acid and subsequent reaction of the latter with ortho-substituted sodium phenoxide gave a number of enantiomerically pure 3-aryloxy-2-hydroxypropanoic acid which are intermediate products in the synthesis of nonracemic 4-aminochroman-3-ols.
BRIDGED BI-AROMATIC CATALYSTS, COMPLEXES, AND METHOD OF USING THE SAME
Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands and method of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into
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Page/Page column 106; 112; 114
(2010/02/14)
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