First synthesis and stereochemistry of enantiomerically pure spiroselenurane and spirotellurane using the 2-exo-hydroxy-10-bornyl group as a chiral ligand
作者： Jian Zhang , Shigemasa Takahashi , Shinichi Saito , Toru Koizumi
DOI: 10.1016/S0957-4166(98)00352-8
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摘要: Abstract The first synthesis of enantiomerically pure spiroselenuranes 8a–d and spirotelluranes 12a,b, using the 2-exo-hydroxy-10-bornyl group as a chiral ligand, has been developed proceeds in good yield with excellent diastereoselectivity. X-ray analysis spirotellurane 12a indicated that spirochalcogenuranes have trigonal bipyramidal (TBP) structure around chalcogenium atom. A comparison spectroscopic properties is also discussed.
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