1. Catalytic bond forming reactions promoted by amidinate, guanidinate and phosphaguanidinate compounds of magnesium.
- Author
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Schwamm, Ryan J., Day, Benjamin M., Mansfield, Natalie E., Knowelden, William, Hitchcock, Peter B., and Coles, Martyn P.
- Subjects
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CATALYTIC activity , *BOND formation mechanism , *CHEMICAL reactions , *MAGNESIUM , *CHEMICAL synthesis , *LIGAND analysis , *ORGANOMAGNESIUM compounds - Abstract
The synthesis and catalytic properties of a series of magnesium compounds consisting of monoanionic, N,N'-chelating ligands (N∩N = amidinates, guanidinates, phosphaguanidinates) is reported. The compounds were synthesized by (i) insertion of a carbodiimide into an existing Mg-C or Mg-N bond, or (ii) protonolysis of an organomagnesium compound by a neutral pre-ligand. Structural analyses of mono- or bis-(chelate) compounds with general formula Mg(N∩N)X(L)n and Mg(N∩N)2(L)n (X = halide, aryloxide, amide; L = Et2O, THF; n = 0, 1 or 2) have been performed and the influence that the ligand substituent patterns have on the solid-state structures has been probed. Selected examples of the compounds were tested as (pre)catalysts for the polymerization of lactide, the dimerization of aldehydes and the hydroacetylenation of carbodiimides. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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