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US 5,329,015 AGranted
Chiral phospholanes via chiral 1,4-diol cyclic sulfates
AssigneeE. I. Du Pont de Nemours and Company
InventorMark J. Burk
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Abstract
This invention relates to novel chiral 1,4-diol cyclic sulfates and their use as precursors in the preparation of chiral phospholane ligands, and chiral complexes useful as catalysts for carrying out enantioselective reactions.
Claims6
A chiral cyclic sulfate compound of formula I:
- ##STR17## wherein:
- R is a radical comprising alkyl, fluoroalkyl or perfluoroalkyl, each containing up to about 8 carbon atoms;
- and aralkyl;
- provided that when R is methyl, the compound has a high degree of enantiomeric purity.
1 more element
Dependencies are inferred from the claim text.