Résumé
Although γ-sulfonyloxy-benzylselenides react with butyllithium to produce stereospecifically aryl cyclopropanes, the corresponding γ-silyloxy-benzylselenides lead to a stereoisomeric mixture of γ-hydroxy-α-silyl-benzylselenides via the retro-[1,4]-Brook rearrangement. Apparently the intermediate benzyllithiums are alkylated before epimerisation takes place in the first case, whereas in the second one epimerisation occurs prior to the silyl group migration.
langue originale | Anglais |
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Pages (de - à) | 7625-7628 |
Nombre de pages | 4 |
journal | Tetrahedron Letters |
Volume | 38 |
Numéro de publication | 43 |
Les DOIs | |
Etat de la publication | Publié - 27 oct. 1997 |