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TADDOLate complexes of zinc†‡
Simmi Datta,Michael T. Gamer,Peter W. Roesky
Dalton Transactions Pub Date : 02/14/2008 00:00:00 , DOI:10.1039/B715123C
Abstract

TADDOL (α,α,α′,α′-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.

Graphical abstract: TADDOLate complexes of zinc
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