Optically Pure Haloselenuranes. : First Synthesis and Nucleophilic Substitutions.

The first synthesis of optically pure haloselenuranes (1) has been accomplished by utilizing the 2-exo-hydroxy-10-bornyl group as a chiral ligand. Complete retention of the configuration has been observed in interconversion reactions between haloselenuranes (1) and selenoxide (2) and in nucleophilic substitution reactions of 1