Der kürzeste Weg zu C1-symmetrischen, chiralen tripod-Liganden mit Neopentan-Grundgerüst / The Shortest Way to C1-Symmetrical, Chiral Tripod Ligands with Neopentane Backbone

Abstract

Chiral tripod-ligands of the type 5 are easily accessible in four steps starting from the dibromide 1. The cleavage of the oxetane 4 b by LiPPh2 yielding the tripod-ligand 5 can be modified enantioselectively by the addition of (-)-sparteine.