The stereochemistry of the chloroperoxidase-catalyzed epoxidation of indene
has been elucidated. In aqueous solution the intial epoxide product is not
stable and opens to form the cis-trans diols. When the reaction was carrie
d out in the absence of water, the epoxide enantiomers could be isolated. U
nder these conditions in 1 R2S enantiomer was formed in approximately 30% e
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