A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 791-28-6, Name is Triphenylphosphine oxide, molecular formula is C18H15OP. In an article, author is Duan, Wenzeng,once mentioned of 791-28-6, Safety of Triphenylphosphine oxide.
NHC-Pd complex based on 1,3-bis (4-ethoxycarbonylphenyl) imidazolium chloride: synthesis, structure and catalytic activity in the synthesis of axially chiral benzophenone hydrazone
A novel NHC-Pd complex of 1,3-bis (4-ethoxycarbonylphenyl) imidazolium chloride has been synthesized and characterized by H-1 NMR, C-13 NMR, IR and X-ray single-crystal diffraction studies. TG analysis shows that the NHC-Pd complex is stable under 208 degrees C. The catalytic activities have been explored for the synthesis of axially chiral N-(2′-methoxy-1,1′-binaphthalen-2-yl) benzophenone hydrazone. The result indicates that the novel NHC-Pd complex can achieve better catalytic activity than the Pd-phosphine catalysts in the synthesis of axially chiral N-(2′-methoxy-1,1′-binaphthalen-2-yl) benzophenone hydrazone.
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Reference:
Phosphine ligand,
,Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate