Presentation Title

Development of Synthetic Methods for Nitrogen Alkylation in Cobalt Tetraazamacrocycles

Faculty Mentor

Michael Schmidt

Start Date

23-11-2019 10:00 AM

End Date

23-11-2019 10:45 AM

Location

217

Session

poster 3

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

The synthesis of nitrogen-methylated tetraazamacrocycles of Co(III) is of interest in studying the CO2 binding constants of a novel alkylated macrocyclic cobalt complex, N,N”-dimethyl [Co(Me6)[14]4,11-diene]+. Several synthetic methods were proposed and attempted to generate this complex, including methylation by the methylsulfinyl carbanion on three reactants: the Co(III) macrocyclic complex, the free ligand, and the Ni(II) analog; and the direct formation of the macrocyclic ligand by the condensation reaction of N-methyl ethylenediamine in synthetic methods with and without Co(III) as a template. Although these methods have yet to afford the production of any of the N, N”-dimethylated macrocyclic complex, identification of obstacles to the synthesis and isolation of this complex have allowed us to choose what to focus on in the future.

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Nov 23rd, 10:00 AM Nov 23rd, 10:45 AM

Development of Synthetic Methods for Nitrogen Alkylation in Cobalt Tetraazamacrocycles

217

The synthesis of nitrogen-methylated tetraazamacrocycles of Co(III) is of interest in studying the CO2 binding constants of a novel alkylated macrocyclic cobalt complex, N,N”-dimethyl [Co(Me6)[14]4,11-diene]+. Several synthetic methods were proposed and attempted to generate this complex, including methylation by the methylsulfinyl carbanion on three reactants: the Co(III) macrocyclic complex, the free ligand, and the Ni(II) analog; and the direct formation of the macrocyclic ligand by the condensation reaction of N-methyl ethylenediamine in synthetic methods with and without Co(III) as a template. Although these methods have yet to afford the production of any of the N, N”-dimethylated macrocyclic complex, identification of obstacles to the synthesis and isolation of this complex have allowed us to choose what to focus on in the future.