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1,033 results on '"Kim, Dong‐Pyo"'

33. Flow Synthesis of Gigantic Porphyrinic Cages: Facile Synthesis of P12L24 and Discovery of Kinetic Product P9L18.

Author

Lee, Hochan, Joo, Jeong‐Un, Dhamija, Avinash, Gunnam, Anilkumar, Koo, Jaehyoung, Giri, Pritam, Ho Ko, Young, Hwang, In‐Chul, Kim, Dong‐Pyo, and Kim, Kimoon

Subjects
CONTINUOUS processing, MONOMERS
Abstract

A continuous flow methodology for the facile and high‐yielding synthesis of the porphyrin‐based self‐assembled organic cage, P12L24 is reported, along with the serendipitous discovery of a kinetic product, P9L18 cage, which has been characterized by MALDI‐TOF MS, NMR, and AFM analysis. A theoretical study suggests a tricapped trigonal prismatic geometry for P9L18. Unlike P12L24, P9L18 is unstable and readily decomposes into monomers and small oligomers. While the batch synthesis produces only the thermodynamic product P12L24, the continuous flow process generates not only the thermodynamic product but also kinetic products, such as P9L18, illustrating the advantages of the continuous flow process for the synthesis of self‐assembled cages and the exploration of new non‐equilibrium assemblies. [ABSTRACT FROM AUTHOR]

Published
2023
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48. The Team Description of the Team OMNI

Author

Sekimori, Daisuke, Mori, Nobuhito, Ieda, Junichi, Matsui, Wataru, Miyake, Osamu, Usui, Tomoya, Tanaka, Yukihisa, Kim, Dong Pyo, Maeda, Tetsuhiro, Sugimoto, Hirokazu, Fujimoto, Ryouhei, Enomoto, Masaya, Masutani, Yasuhiro, Miyazaki, Fumio, Goos, G., editor, Hartmanis, J., editor, van Leeuwen, J., editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Birk, Andreas, editor, Coradeschi, Silvia, editor, and Tadokoro, Satoshi, editor

Published
2002
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50. Continuous‐Flow Photocatalysis for the Direct C‐H Trifluoromethylation of Heterocycles with an Organic Photoredox Catalyst.

Author

Yang, Jianwen, Kawale, Sanket A., Yang, Xiaobo, and Kim, Dong‐Pyo

Subjects
HETEROCYCLIC compounds, CATALYSTS, BATCH processing, MERGERS & acquisitions, PHOTOCATALYSIS, CATALYSIS
Abstract

Photocatalysis for direct C−H trifluoromethylation represents an ideal way to synthesize trifluoromethyl‐containing chemical compounds, but the conventional batch processes are inefficient with limited light penetration and indispensably irradiated for a long while. Herein, we report a continuous‐flow protocol for photocatalytic direct C−H trifluoromethylation of heterocycles in the presence of an organic photoredox catalyst: 2,4,6‐tris(diphenylamino)‐3,5‐difluorobenzonitrile (3DPA2FBN). In this approach, benefiting from the merger of organic photoredox catalysis and continuous‐flow techniques, a variety of trifluoromethylated heterocycles were rapidly synthesized up to 85 % yield with 80 min residence time under metal‐ and oxidant‐free reaction conditions. [ABSTRACT FROM AUTHOR]

Published
2023
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