The use of polydentate ligands to control hydrolysis/condensation of group 4 metal alkoxides for tailored nanoceramic materials for nanoinks (N-inks) was explored using a series of substituted, hydroxyl-benzaldehydes (HO-BzA-R: salicylaldehyde, 3,5-di-tert-butyl-2-hydroxybenzaldehyde, 2-hydroxy-3-methoxybenzaldhyde, 2-hydroxy-5-nitrobenzaldehyde, 5-bromosalicylaldehyde, 3,5-di-iodosalicylaldehyde). Instead of the expected facile substitution of the O-BzA-R, an unexpected reduction of the ‘Ph-C(=O)H occurred forming a methoxide moiety, ‘Ph-CH2O’. This results in the isolation of an unusual family of [(py)(OR)2Ti(m-k1:(O,O’)-OCH2Ph-Rx)2]2 (OR = ONep or OPri) compounds. The Ti metal centers are octahedrally bound by a parent OR, a pyridine solvent molecule, and the chelating, bridging di-alkoxide. The synthesis, characterization and exploration of the proposed Meerwein-Pondorf-Verley reduction mechanism will be reported for formation of these trapped intermediates. ___________________________ Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.

Trapped intermediate of Meerwein-Pondorf-Verley reduction of hydroxy benzaldehyde using titanium alkoxides

255th National Meeting (2018)

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