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Concept
Steven Ittel
Résumé
Steven Dale Ittel (born 1946 in Hamilton, Ohio) is an American chemist specializing in organometallic chemistry and homogeneous catalysis.
Ittel attended Miami University in Oxford, Ohio, where he received a bachelor's degree in chemistry in 1968. He was then commissioned as an officer in the United States Public Health Service and studied photochemical smog in the New York City metropolitan area from 1968 to 1970. He attended Northwestern University, where he received his PhD in chemistry under the direction of James A. Ibers in 1974.
Ittel worked on hydride activation of lanthanides for Systems for Nuclear Auxiliary Power (SNAP) at Monsanto's Mound Laboratories for a short time. Upon receiving his PhD from Northwestern University, he joined DuPont’s Central Research Department at the Experimental Station in Wilmington, Delaware.
Ittel is best known for his contributions to organometallic chemistry and homogeneous catalysis. He discovered fluxional processes in both diamagnetic and paramagnetic π-allyl organometallic complexes bearing M-H-C agostic interactions. He was responsible for a series of C-H activation reactions based upon fleeting zero-valent iron complexes bearing bidentate phosphorus ligands.
While working on the air oxidation of cyclohexane to adipic acid (an intermediate in the preparation of nylon-66) he discovered a series of bis(pyridylimino)isoindoline complexes of cobalt to be very effective catalysts for the decomposition of the intermediate cyclohexylhydroperoxide. He led and contributed to DuPont’s technology for cobalt-catalyzed chain transfer in acrylic radical polymerization. The resulting macromonomers are utilized commercially in a broad range of automotive finishes.
As a manager at DuPont, he directed the work of almost 100 DuPont scientists over the years. One major effort was on DuPont Versipol post-metallocene catalysts for ethylene coordination polymerization and copolymerization.
Late in his career, his research interests became more diverse, yet he never left his central focus of transition metal chemistry.
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