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Pure Appl. Chem., 2007, Vol. 79, No. 11, pp. 1959-1968

http://dx.doi.org/10.1351/pac200779111959

Recent progress on photoreactions in microreactors

Yoshihisa Matsushita1, Teijiro Ichimura2, Nobuko Ohba2, Shinji Kumada2, Kosaku Sakeda2, Tadashi Suzuki2, Hideki Tanibata3 and Toshiaki Murata4

1 Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ohokayama, Meguro, Tokyo 152-8551, Japan
2 Department of Chemistry and Materials Science, Tokyo Institute of Technology, 2-12-1 Ohokayama, Meguro, Tokyo 152-8551, Japan
3 Mitsui Engineering & Shipbuilding Co., Ltd., Tokyo, Japan
4 Mitsui Zosen Plant Engineering Inc., Tokyo, Japan

Abstract: A microreaction system for organic photoreactions was developed, and the processes of diastereo-differentiating photosensitized reaction, photocatalytic oxidation and reduction of organic compounds, and amine N-alkylation were examined in microspace. These model reactions proceeded very rapidly with considerably large photonic efficiencies because of some distinct properties of microreactors for photoreactions, such as higher spatial illumination homogeneity and better light penetration through the entire reactor depth, and large surface-to-volume ratio in comparison with large-scale batch reactors. These results suggest feasibility of microreaction systems on organic photoreactions.