Chinese Academy of Sciences

Shanghai Greencarbon Hi-Tech Co., Ltd.

Zhaobin Han

Kuiling Ding

Zheng Wang

Lei Zhang

Xiaoming Wang

Xiaoyu Zhao

Xubin Wang

Disclosed is a method for preparing a formamide compound, the method uses carbon dioxide, hydrogen and an amine compound as raw materials and a transition metal complex as a catalyst, and the reaction is carried out in an organic solvent or in the absence of a solvent to form a formamide compound. The method of the present invention is an effective method of chemical utilization of carbon dioxide, which has the advantages of high reaction efficiency, a good selectivity, mild conditions, economic and environmental protection, being simple and convenient to operate and the like, and has a good popularization and application prospect.

Method for preparing formamide compound

Disclosed are aromatic spiroketal diphosphine ligands, preparation methods and uses thereof. The ligands have the structure of formula (I), in which R, R, R, R, R, R, R, R, X and n are defined as such described in the specification. The aromatic spiroketal diphosphine ligands are prepared from aromatic spiroketal compounds. Also disclosed are the preparation methods of aromatic spiroketal compounds. The preparation methods are simple and can produce racemic or chiral aromatic spiroketal diphosphine ligands. The ligands can be used as catalysts of asymmetrical catalytic reactions having economical practicability and industry application prospect 

Compounds of chiral aromatic spiroketal diphosphine ligands, preparation methods and uses thereof

Provided is a method for preparing methanol and diol from cyclic carbonate, comprising: under a hydrogen atmosphere, in an organic solvent, and with the presence of a ruthenium complex (Ru(L)XYY') and an alkali, conducting a hydrogenation reduction reaction on the cyclic carbonate or polycarbonate to obtain methanol and diol. Also provided is a ruthenium complex prepared from ruthenium and a tridentate amido diphosphine ligand. Also provided is a deuterated methanol and deuterated diol preparation method by substituting the hydrogen and ruthenium complex with deuterium.

Ruthenium complex and method for preparing methanol and diol

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Shanghai, China

Zhaobin Han