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Enantiomerically pure sultams (-)-2, (+)-3 and (+)-4 were synthesized.Their uses as new chiral auxiliaries in asymmetric Diels-Alder reactions with diastereoselectivity up to 99∶1 are presented. The relationship between the structure of chiral sultam and the effectiveness of asymmetric induction in Diels-Alder reactions are also discussed.
The relationship between the structure of their uses as asymmetric Diels-Alder reactions with diastereoselectivity up to 99: 1 is presented. The relationship between the structure of chiral sultam and the effectiveness of asymmetric induction in Diels-Alder reactions are also discussed.