Controlling the Catalytic Aerobic Oxidation of Phenols
作者:Kenneth Virgel N. Esguerra、Yacoub Fall、Laurène Petitjean、Jean-Philip Lumb
DOI:10.1021/ja501789x
日期:2014.5.28
The oxidation of phenols is the subject of extensive investigation, but there are few catalyticaerobic examples that are chemo- and regioselective. Here we describe conditions for the ortho-oxygenation or oxidative coupling of phenols under copper (Cu)-catalyzed aerobic conditions that give rise to ortho-quinones, biphenols or benzoxepines. We demonstrate that each product class can be accessed selectively
酚类的氧化是广泛研究的主题,但很少有具有化学和区域选择性的催化需氧实例。在这里,我们描述了在铜 (Cu) 催化的有氧条件下苯酚的正氧化或氧化偶联的条件,这些条件会产生邻醌、双酚或苯并氧杂环庚烷。We demonstrate that each product class can be accessed selectively by the appropriate choice of Cu(I) salt, amine ligand, desiccant and reaction temperature. 此外,我们评估了取代基对苯酚的影响,并证明了它们对原氧化和氧化偶联途径之间选择性的影响。
Davis, Brian R.; Gash, Diana M.; Woodgate, Paul D., Journal of the Chemical Society. Perkin transactions I, 1982, p. 1499 - 1508
作者:Davis, Brian R.、Gash, Diana M.、Woodgate, Paul D.、Woodgate, Sheila D.
DOI:——
日期:——
GASH DIANA M.; WOODGATE PAUL D., AUST. J. CHEM., 1979, 32, NO 8, 1863-1867
作者:GASH DIANA M.、 WOODGATE PAUL D.
DOI:——
日期:——
DAVIS, B. R.;GASH, D. M.;WOODGATE, P. D.;WOODGATE, S. D., J. CHEM. SOC. PERKIN TRANS., 1982, N 7, 1499-1507
作者:DAVIS, B. R.、GASH, D. M.、WOODGATE, P. D.、WOODGATE, S. D.
DOI:——
日期:——
Trends in Metal−Biradical Exchange Interaction for First-Row M<sup>II</sup>(Nitronyl Nitroxide-Semiquinone) Complexes
作者:David A. Shultz、Kira E. Vostrikova、Scot H. Bodnar、Hyun-Joo Koo、Myung-Hwan Whangbo、Martin L. Kirk、Ezra C. Depperman、Jeff W. Kampf
DOI:10.1021/ja020715x
日期:2003.2.1
susceptibility studies are consistent with strong intraligand (NN-SQ and NN-PhSQ) ferromagnetic exchange coupling. For the five-coordinate Mn, Co, and Ni complexes, the S = 1 ligand is antiferromagnetically coupled to the metal. For both the five-coordinate Cu complex and the six-coordinate Ni complex, the ligand is ferromagnetically coupled to the metal spins in accordance with orbital symmetry arguments