Dr. Yunsheng Ma and his collaborators from Nagoya University published one research paper in J. Am. Chem. Soc. The paper's title is “Dynamic Topochemical Reaction Tuned by Guest Molecules in the Nanospace of a Metal–Organic Framework”.

Dr. Yunsheng Ma collaborated with Prof. R. Matsuda from Nagoya University published one research paper in J. Am. Chem. Soc. Reaction in well-designed solids allows yielding products with high selectivity and unique compounds that cannot be obtained in solution. However, the precise tuning of the arrangement of reactants in solids for the versatile application of solid-phase reactions remains a challenging subject. Here, a [2 + 2] photocyclization reaction at different positions of the carbon−carbon bonds is described in which the spatial arrangement of 4-styrylpyridines (4-spy) is changed by guest molecules in a flexible metal−organic framework. The 4-spy molecules undergo photodimerization between two carbon−carbon double bonds in the guest-free framework, whereas a reaction between olefinic and aromatic carbon−carbon bonds or the absence of reaction takes place in the solvent-incorporated form. This reactivity, which can be termed as “dynamic topochemistry” contributes to enforce the applicability of solid-phase reactions in synthetic chemistry.

Figure 1. Schematic illustration of switchable reactivity in a flexible MOF by guest solvent molecules.

Link to the paper:

https://pubs.acs.org/doi/10.1021/jacs.9b07682

Title: Dynamic Topochemical Reaction Tuned by Guest Molecules in the Nanospace of a Metal–Organic Framework

Journal: J. Am. Chem. Soc.

Dr. Yunsheng Ma received his PhD in Inorganic Chemistry from Nanjing University in 2007 (Supervisor: Prof. Limin Zheng). In 2009 he worked as a postdoctoral researcher in Tsinghua University (Taiwan, Supervisor: Prof. Showan Chen). In 2012 he worked in Prof. S. Kitagawa’s group as a visiting researcher in Kyoto University. From 2016 to 2019 he worked in Nagoya University as a designated associate professor in Prof. R. Matsuda’s group. His research focuses on Metal-organic Frameworks, Molecular Magnetism and Organic Synthesis. Research papers were published in JACS, Chem. Eur. J., Inorg. Chem. etc.