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Titanium Carbene Complexes Stabilized by Alkali Metal Amides
Author(s) -
Osseili Hassan,
Truong KhaiNghi,
Spaniol Thomas P.,
Maron Laurent,
Englert Ulli,
Okuda Jun
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201812579
Subject(s) - alkali metal , carbene , titanium , metal , chemistry , inorganic chemistry , polymer chemistry , materials science , organic chemistry , catalysis
Abstract Facile α‐H elimination from tetrakis(trimethylsilylmethyl)titanium precursors to give adducts of (alkylidene)bis(alkyl)titanium complexes is induced by light alkali metal amides of the NNNN‐type macrocyclic anionic ligand Me 3 TACD [(Me 3 TACD)H=1,4,7‐trimethyl‐1,4,7,10‐tetraazacyclododecane]. In the crystal, the alkali metal interacts with the carbene carbon atom or with the CH 2 group of the trimethylsilymethyl ligand. The nucleophilic character of the carbene carbon atom was shown by the reaction with benzophenone and terminal acetylenes.