Shanghai Institute of Organic Chemistry developed a rhodium-catalyzed efficient hydrogenation of carbon dioxide to formamide

Due to the inertness of carbon dioxide, how to achieve chemical conversion under mild conditions is a very challenging scientific problem. The synthesis of fine chemicals through the catalytic hydrogenation of carbon dioxide is an important way for the effective use of carbon dioxide resources.

State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences The Ding Kuiling group used the pincer type ruthenium complex as a catalyst to successfully develop a highly efficient synthesis of carbon dioxide, hydrogen and organic primary or secondary amines. Methods of carboxamides. The method has relatively mild reaction conditions (reaction temperature is 80-120°C, total carbon dioxide and hydrogen pressure is not higher than 70 atm), high catalytic efficiency (up to 1.94 million conversions per single vessel), good selectivity, and wide range of substrates Etc. Especially in the synthesis of N,N-dimethylformamide (DMF, a universal solvent), the catalyst can be easily reused. After 12 cycles, its catalytic activity remains basically unchanged. The catalytic system has excellent catalytic performance and good application prospects.

At the same time, using a one-pot method of step-by-step reaction and using formamide derivatives as reaction intermediates, the conversion of carbon dioxide to methanol was achieved (up to 3,600 conversions), providing a new method for the recycling of carbon dioxide. Ideas.

The results of this research were published in Angew. Chem. Int. Ed. 2015, 54, 6186–6189. This group is also following the implementation of rhodium-catalyzed hydrogenated ethylene carbonate synthesis of methanol and 1,2-ethanediol in 2012 under mild conditions. After Angew. Chem. Int. Ed. 2012, 51, 13041-13045, another progress has been made in the chemical utilization of carbon dioxide.

The work was heavily funded by the National Natural Science Foundation of China, the Chinese Academy of Sciences and the Shanghai Science and Technology Commission.

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