亚水杨基苯胺 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
以96%的产率得到sodium salt of salicylidene-2-methyl-1-aminobenzene
参考文献:
名称:
Metal and Ligand-Substituent Effects in the Immortal Polymerization ofrac-Lactide with Li, Na, and K Phenoxo-imine Complexes
摘要:
A series of lithium, sodium, and potassium complexes with phenoxo-imine ligands M[(O-2-(RN=CH)-C6H4] [R = C6H5; 2-(BuC6H5)-Bu-t; 2,6-(Pr2C6H3)-Pr-i] and [O-2-(RN=CH)-4,6-(Bu2C6H4)-Bu-t] [R = C6H5; 2-(BuC6H5)-Bu-t; 2,6-(Pr2C6H3)-Pr-i] 1-3(a-f) have been synthesized. The molecular structures in the solid state of some of these complexes have been determined by X-ray diffraction. These compounds show different nuclearities and geometries around the metal center depending on the nature and the pocket of the ligand substituents. Of particular interest is the structure of compound 3e, being the first example of a potassium cubane complex obtained with this kind of ligand. The structural behavior in solution has also been studied by diffusion-ordered NMR spectroscopy (DOSY), showing a direct correlation between aggregation behavior and polymerization activity. Compounds 1-3(a-f) are extremely active catalysts in the ring-opening polymerization (ROP) of rac-lactide, achieving conversions of 100% in less than 1 min and heterorich-PLA that is modified by the metal atom and the ligand substituents. BnOH was used as co-initiator, and the presence of large amounts of the alcohol produces the immortal polymerization of rac-lactide in a more controlled process. Stoichiometric reactions involving the catalysts, BnOH, and lactide demonstrated an activated monomer mechanism for the polymerization of rac-lactide.
Synthesis, molecular structures and norbornene addition polymerization activity of the neutral nickel catalysts supported by N-naphthyl-salicylaldiminato ligands
作者:Wei-Hua Wang、Guo-Xin Jin
DOI:10.1016/j.inoche.2004.11.025
日期:2005.1
Abstract A series of nickel Schiff-base complexes were synthesized by the reaction of Schiff-bases containing N-naphththyl group with trans-[Ni(PPh3)2(Ph)Cl] and they were characterized by EA, IR and NMR. When activated by methylaluminoxane, these complexes exhibit good catalytic activity for the addition polymerization of norbornene.
Singh, P. P.; Srivastava, Beena, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1986, vol. 25, # 12, p. 1109 - 1113
作者:Singh, P. P.、Srivastava, Beena
DOI:——
日期:——
Dubey; Mishra, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 2006, vol. 45, # 10, p. 2203 - 2208