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1. Regiospecific synthesis of 2,6-bis-indazol-1-ylpyridines from 2,6-bis-hydrazinopyridine

Author

Duncan, Nathan C. and Garner, Charles M.

Subjects
*ORGANIC synthesis, *PYRIDINE, *HYDRAZONES, *AZOLES, *LIGANDS (Chemistry), *ORGANIC solvents, *CHEMICAL reactions, *TRANSITION metals
Abstract

Abstract: The synthesis of 2,6-bis-hydrazonopyridines from 2,6-bis-hydrazinopyridine and the conversion of these bis-hydrazones into 2,6-bis-indazol-1-ylpyridines were studied. The conversion of bis-haloarylhydrazones to bis-indazoles was systematically optimized using iron and copper mediated reactions and various bases and ligands. By varying solvent, base, transition metal, and ligand, a novel regiospecific route to the 2,6-bis-indazol-1-ylpyridine class of ligands was developed. [Copyright &y& Elsevier]

Published
2011
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