Development of Advanced Molecular Transformation Technology Based on Design of Environmental Benign Redox Systems Consisting of Early Transition Metals

Principal Investigator

Toshikazu HIRAO (Specially Appointed Professor, Institute of Scientific and Industrial Research, Osaka University)

Outline of the Project

Construction of the catalytic systems based on redox-active and/or Lewis acidic properties of early transition metals is investigated in this project. A purpose of the investigation is the creation of environmental benign advanced molecular transformation technology through the control of electron transfer processes and nano-space for reactions. Redox-active properties of the early transition metals such as vanadium, titanium, and zirconium allow both oxidative and reductive molecular transformations. More specifically, use of the high valent state species permits the oxidative transformations, and conversely reaction with the low valent state ones does the reductive transformations. Furthermore, the Lewis acidity is another factor for the molecular transformations. In this context, our study involves the four topics: 1) oxidative cross-coupling reaction, 2) hybrid chiral reaction space, 3) catalytic activation of small molecules such as carbon dioxide, and 4) design and application of the non-planar p-conjugated molecule ligand for early transition metals. Through the study, development of the environmental benign catalytic systems is directed from the viewpoint of utilization of oxygen as a terminal oxidant and carbon dioxide as a C1 unit.

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