竹林 智司

研究員募集中

ポスドク募集中です。JSPS等のポスドク奨学金制度を使って来ていただける方を募集中です。 有機金属化学、均一触媒開発に興味のある方のご連絡をお待ちしています。satoshi.takebayashi@oist.jp

パートタイム研究員(2-5日/週、6時間/日、時給1000-1400円, 年収130万円以下)も募集中です。詳細は竹林までご連絡ください。satoshi.takebayashi@oist.jp

 

Profile

Satoshi Takebayashi
Satoshi Takebayashi
Science and Technology Associate (2017-)
2016-2017 Senior intern at Weizmann Institute of Science in D. Milstein lab
2012-2016 Postdoc at Weizmann Institute of Science in D. Milstein lab
2011-2012 Research assistant at Waseda University in T. Shibata lab
2006-2011 Ph.D. at University of Alberta in S. H. Bergens lab
2001-2005 B.S. at Waseda University 
satoshi.takebayashi

Research projects

New Strategies to Activate dinitrogen N2

The most abundant gas on earth, dinitrogen N2, is the ultimate source of nitrogen for living organisms. Despite its abundance, N2 cannot be directly metabolized by most of the organisms due to its stability. Currently, N2 is converted industrially into biologically available form, ammonia NH3, using an energy-intensive method developed in 1909. Thus, chemists have been searching for a sustainable alternative method for decades. One of the possible alternative is the utilization of homogeneous catalysts that can be much more efficient than current heterogeneous catalyst. However, no homogeneous catalyst for the production of ammonia from N2 and molecular hydrogen H2 is known to date partly due to the lack of a coordination mode of N2 to transition metal that allows reaction with H2 and catalytic turnover. In this project, we are going to develop a new coordination mode of N2 to develop the first homogeneous hydrogenation of N2.

Sustainable Chemistry with Base Metal Catalysis

Precious metals such as, ruthenium (Ru), rhodium (Rh), palladium (Pd), iridium (Ir), and platinum (Pt), are known to form very active, and selective catalysts, and are used widely in chemical industry. However, such precious metals are toxic and costly. Furthermore, depletion of precious metals are expected in future due to ever increasing use of it. In this project, we are developping catalysts based on non-toxic, cheap, and abundant metals such as, molybdenum (Mo), manganese (Mn), iron (Fe), cobalt (Co), and nickel (Ni). 

Selected Publications (My Google Scholar page is here.)

1. Iron-Catalyzed Metathesis Polymerization of Olefins. 
Takebayashi, S.; Milstein, D.
Israeli patent, 2017, 253760. 
 
2. Base-Catalyzed Bifunctional Addition to Amides and Imides at Low Temperature. A New Pathway for Carbonyl Hydrogenation
John, J. M.; Takebayashi, S.; Dabral, N.; Miskolzie, M.; Bergens S. H.

3. Rh(III)-catalyzed directed C–H bond amidation of ferrocenes with isocyanates
Takebayashi, S.; Shizuno, T.; Otani, T.; Shibata, T.

4. [Ir(cod)2]BARF-Catalyzed C−H Bond Alkenylation and Alkylation of Ferrocenes
Takebayashi, S.; Shibata, T. 

5. Experimental Investigations of a Partial Ru–O Bond during the Metal–Ligand Bifunctional Addition in Noyori-Type Enantioselective Ketone Hydrogenation 
Takebayashi, S.; Dabral, N.; Miskolzie, M.; Bergens, S. H. 

6. Desymmetrization of meso-Cyclic Imides via Enantioselective Monohydrogenation
Takebayashi, S.; John, J. M.; Bergens, S. H. 

7. Facile Bifunctional Addition of Lactones and Esters at Low Temperatures. The First Intermediates in Lactone/Ester Hydrogenations
Takebayashi, S.; Bergens, S. H. 

Lab equipment

mBraun Unilabplus Glovebox with four gloves

Shimazu Gas Chromatograph GC2014 equipped with TCD (Shincarbon ST column, 2m x 3mm) and FID detectors (Astec Chiraldex® B-DM column, 30m x 0.25mm).

A 180cm width fumehood equipped with a standard Schlenk maniford, stirrers, oil baths etc.

Buchi Rotavapor R-215 system equipped with an automatic vacuum controller, and a chiller.