415944-53-5Relevant academic research and scientific papers
Preparation method of cycloalkylaminophenol intermediate (by machine translation)
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Paragraph 0073; 0075; 0078, (2019/08/20)
The invention provides a preparation method, of a cycloalkylaminophenol intermediate. The method comprises the following steps: A) reacting an alkyl-substituted phenol, hexamethylenetetramine and acetic acid or a derivative thereof, obtaining first crude product; B) reacting the first crude product and the cycloalkylamine compound to obtain second crude product; C) reacting the second crude, the hydrogenated reducing agent in an alcohol solvent, and obtaining an aminophenol intermediate. The preparation method of the cycloalkylaminophenol intermediate is simple in process, mild in condition, and mild in condition. The prepared alkylaminophenol intermediate has good purity and yield, and is suitable for industrial production. (by machine translation)
Synthesis and structure characterization of homoleptic lanthanide complexes stabilized by Schiff-base ligands and their application in the polymerization of ε-caprolactone
Cen, Bo,Duan, Ying-Xiang,Deng, Le-Qing,Wang, Yu-Long,Tao, Xian,Shen, Ying-Zhong
, p. 191 - 199 (2018/01/01)
A series of homoleptic lanthanide complexes [(L1–6)3Ln] (Ln = La, L1 1, L2 3, L3 5, L4 7, L5 9, L6 11; Ln = Gd, L1 2, L2 4, L3 6, L4 8, L5 10, L6 12) supported by Schiff-base ligands were synthesized by the amine elimination reactions of monophenol ligands [2,4-tBu2-6-CH=N-C6H4-p-CH3-PhOH (HL1), 2,4-tBu2-6-CH=N-C6H4-o-CH3-PhOH (HL2), 2,4-tBu2-6-CH=N-C6H4-o-C2H5-PhOH (HL3), 2,4-tBu2-6-CH=N-C6H4-p-OCH3-PhOH (HL4), 2,4-tBu2-6-CH=N-C6H4-p-Br-PhOH (HL5), 2,4-tBu2-6-CH=N-Cy-PhOH (HL6)] with Ln[N(SiMe3)2]3 (Ln = La, Gd) in 3: 1 M ration in THF. Complexes 1, 3, 5, 7, 9 and 11 were characterized by NMR spectra and all twelve complexes were characterized using elemental analysis and infrared spectra. Complexes 4, 5 and 6 have been determined by single-crystal X-ray diffraction, which reveals that they have possessed isostructural unsolvated mononuclear structures and the metal center has exhibited a distorted octahedral geometry, in which the O(1), O(2), O(3) atoms have occupied three positions and N(1), N(2), N(3) atoms have occupied the other three positions. The catalytic properties of complexes 1–12 for the ring-opening polymerization of ε-caprolactone were studied and found that all complexes were efficient initiators for this ring-opening polymerization reaction that afforded polycaprolactone with high molecular weights and moderate molecular-weight distributions (1.23–2.46).
Spectroscopic and electron-transfer reactivity studies of bulky bis(N-cycloalkyl-3,5-tBu2-salicylaldiminato)copper(II) complexes: Generation of uncoordinated and coordinated phenoxyl radicals
Kasumov, Veli T.,K?ksal, Fevzi,Kutluay, Ay?egül
experimental part, p. 99 - 106 (2010/08/06)
This work summarizes the results of our studies on the spectral, magnetic, electrochemical and chemical redox properties of N-cycloalkyl-3,5-tBu2-salicylaldimine ligands [cycloalkyl = cyclo-C5H9(HL1), cyclo-C6H11 (HL2), cyclo-C7H13 (HL3), cyclo-C8H15 (HL4), 1-adamantyl (HL5), 2-adamantyl (HL6)] and their copper(II) complexes (1-6). The compounds have been characterized by IR, 1H NMR, UV-vis, EPR spectroscopy, electrochemical and magnetic susceptibility measurements. The geometry of 1-6, according to their EPR (gII and gII/AII) and visible spectral data, exhibit a significant amount distortion from slightly distorted square-planar to pseudo-tetrahedral. The cyclic voltammetric studies of 1-6 reveal that as the extent of the tetrahedral distortion of CuII center increases on going from 1 to 5, the values of CuII/CuI potentials became more negative. The compounds have been oxidized electrochemically and chemically and the generated relatively stable uncoordinated phenoxyl [HLx]{radical dot}+ and coordinated Cu(II)-phenoxyl radical [1-6]{radical dot}+ species have been characterized by UV/vis and EPR spectroscopy.
Monocyclopentadienyl phenoxido-amino and phenoxido-amido titanium complexes: Synthesis, characterisation, and reactivity of asymmetric metal centre derivatives
Alesso, Giuseppe,Sanz, Martial,Mosquera, Marta E. G.,Cuenca, Tomas
experimental part, p. 4638 - 4649 (2009/03/12)
Reduction of phenol-imine derivatives R′N=CH(3,5-R2C 6H2-2-OH) (R = tBu; R′ = C6H5 1a, p-MeC6H4 1b, Cy 1c, tBu 1d, 2,6-Me2C 6H3 1e; R = H; R′ = p
