Abstract

A short asymmetric synthesis of (1R,5S,6S)-6-(2,2-dimethylpropanamido)spiro[4.4]nonan-1-ol 7 is described along with its application as a chiral auxiliary in various Diels–Alder reactions. The enantioselectivity of the Diels–Alder adducts ranged from 86–98% ee. The Diels–Alder adducts were easily removed from the chiral auxiliary and the latter was recyclized. The absolute and relative stereochemistry of 7 was determined from an X-ray crystal structure of the p-bromobenzoate derivative of 7.

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