Synthesis and Catalytic Activity of Two New Cyclic Tetraaza Ligands

doi:10.3390/80500453

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Molecules 2003, 8(5), 453-458; doi:10.3390/80500453

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Synthesis and Catalytic Activity of Two New Cyclic Tetraaza Ligands

María H. Fonseca ¹, Thomas Hjelmgaard ^1,2 and Burkhard König ¹^,*

¹ Institut für Organische Chemie, Universität Regensburg, D-93040 Regensburg, Germany ² Current address: Department of Chemistry, Technical University of Denmark, Denmark

* Author to whom correspondence should be addressed.

Received: 11 April 2003; in revised form: 9 May 2003 / Accepted: 9 May 2003 / Published: 31 May 2003

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Abstract: Two new chiral cyclic tetraaza ligands were synthesized and characterized. Their catalytic activity was tested in the asymmetric addition of diethylzinc to benzaldehyde. The expected secondary alcohol was obtained in moderate yields, but with very low enantioselectivity.

Keywords: Chiral tetraaza ligands; asymmetric catalysis

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MDPI and ACS Style

Fonseca, M.H.; Hjelmgaard, T.; König, B. Synthesis and Catalytic Activity of Two New Cyclic Tetraaza Ligands. Molecules 2003, 8, 453-458.

AMA Style

Fonseca M.H., Hjelmgaard T., König B. Synthesis and Catalytic Activity of Two New Cyclic Tetraaza Ligands. Molecules. 2003; 8(5):453-458.

Chicago/Turabian Style

Fonseca, María H.; Hjelmgaard, Thomas; König, Burkhard. 2003. "Synthesis and Catalytic Activity of Two New Cyclic Tetraaza Ligands." Molecules 8, no. 5: 453-458.

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