26220-72-4Relevant academic research and scientific papers
A two fluorine boron base bridge b [...] complex preparation method (by machine translation)
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Paragraph 0079-0080; 0082-0083; 0091; 0104; 0112-0121; 0127, (2018/10/02)
The present invention discloses a two fluorine boron base bridge b [...] complex preparation method, the molecular formula is , In the formula R1 , R2 , R3 , R4 Is hydrogen (H) or substituted group, may be the same or different, can be independent or belong to cyclic substituted group, L1 And L2 Is the axial ligand, as coordination capability is relatively weak solvent or water molecule; in nitrogen or an inert gas atmosphere, the bivalent cobalt salt and b two alkone two wo ligand and reaction solvent mixing; adding three fluorinated [...] complex, at room temperature or under heating or ice water bath, stirring the reaction, then the resulting reaction mixture obtained after filtering the precipitate is the crude product; the crude product with the polarity is not lower than the isobutyl alcohol purification solvent or water mixing 5 - 30 minutes or ultrasonic processing 1 - 10 minutes before and after the filtration of the vacuum or reduced-pressure drying to obtain the pure dehydrocyclize [...] bridged b [...] complex. The invention simplified purification step, increasing the yield. (by machine translation)
