TADDOLate complexes of zinc.
TADDOL (alpha,alpha,alpha',alpha'-Tetraaryl-2,2-dimethyl-1,3-dioxolane-4,5-dimethanol) and its derivatives have been used as a chiral auxiliary in a huge number of enantioselective syntheses mediated by transition metals. Herein we report for the first time on the synthesis and structural characterization of Zn-TADDOLate complexes. The homo trinuclear zinc complex, [Me2Zn3{(S,S)-TADDOLate}2(THF)2], was obtained by reaction of TADDOL with dimethylzinc, whereas the hetero trinuclear complex, [Li2Zn{(S,S)-TADDOLate}2(THF)2], was synthesized from dilithium TADDOLate with zinc dichloride. Both structures reveal a non-linear trimetallic M...Zn...M setup, which is surrounded by two TADDOLate ligands.
Datta
Simmi
S
Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195, Berlin, Germany.
Gamer
Michael T
MT
Roesky
Peter W
PW