Benzylic Hydroperoxidation via Visible-Light-Induced Csp3–H Activation
摘要:
A highly efficient benzylic hydroperoxidation has been realized through a visible-light-induced Csp(3)-H activation. We believe that this reaction undergoes a direct HAT mechanism catalyzed by eosin Y. This approach features the use of a metal-free catalyst (eosin Y), an energy-economical light source (blue LED), and a sustainable oxidant (molecular oxygen). Primary, secondary, and tertiary hydroperoxides as well as silyl, benzyl, and acyl peroxides were successfully prepared with good yields and excellent functional group compatibility.
A novel copper(<scp>ii</scp>)–lanthanum(<scp>iii</scp>) metal organic framework as a selective catalyst for the aerobic oxidation of benzylic hydrocarbons and cycloalkenes
作者:P. Cancino、A. Vega、Andrea Santiago-Portillo、Sergio Navalon、Mercedes Alvaro、P. Aguirre、E. Spodine、Hermenegildo García
DOI:10.1039/c5cy01448d
日期:——
The synthesis and structure of a novel heteronuclear CuII and LaIII metal organic framework (MOF) having pyridinedicarboxylic acid (CuLa-MOF) is reported. The obtained MOF with the formula [Cu0.5La2(HPDC)(PDC)2(SO4)(H2O)2]H2O}n (PDC: 3,5-pyridinedicarboxylate) has a 3D non-porous lattice with a single type of octahedrally coordinated CuII and two distinct nonacoordinated LaIII ions, with sulphate
报道了具有吡啶二羧酸(CuLa-MOF)的新型杂核Cu II和La III金属有机骨架(MOF)的合成和结构。得到的具有式[Cu 0.5 La 2(HPDC)(PDC)2(SO 4)(H 2 O)2 ] H 2 O} n(PDC:3,5-吡啶二羧酸酯)的MOF具有3D无孔晶格具有单一类型的八面体配位的Cu II和两个不同的非配位的La III离子,其中硫酸盐是Cu II和La III之间的连接基中心。CuLa-MOF表现出催化活性,以促进苄基烃的需氧自氧化和环烯的需氧氧化。与均相催化剂相比,作为非均相催化剂的Cu(OAc)2,CuLa-MOF表现出相似的活性,但从第一催化循环到第二催化循环,固体可循环利用,但活性略有下降。之后,观察到稳定的活性,这由重复使用时反应的时间演变的巧合确定。
934. Organic peroxides. Part IX. A stereochemical study of the formation of alkyl hydroperoxides from hydrogen peroxide
作者:Alwyn G. Davies、R. Feld
DOI:10.1039/jr9580004637
日期:——
Iwanow et al., Zhurnal Obshchei Khimii, 1952, vol. 22, p. 781; engl. Ausg. S. 843