我们在这里报告了由水热途径中的阳离子表面活性剂CTAB介导的CuCr 2 O 4尖晶石纳米颗粒催化剂的制备。X射线衍射显示形成了CuCr 2 O 4尖晶石相,而透射电镜显示其粒径为30-60 nm。推测该催化剂对于用H 2 O 2将环己烷选择性氧化为环己酮具有高活性。在50℃的温度下,在该催化剂上实现了70%的环己烷转化率和85%的环己酮选择性。而且,即使再使用8次,该催化剂也没有表现出任何明显的活性损失,并证明了其在氧化其他环烷烃中的功效。
Functionalization of saturated hydrocarbons. 14. Further studies on the mechanism of Gif-type systems
作者:Derek H. R. Barton、Frank Halley、Nubar Ozbalik、Martine Schmitt、Esme Young、Gilbert Balavoine
DOI:10.1021/ja00200a037
日期:1989.8
Reaction photochimique d'[adamantyl-2]-2, [adamantyl-1]-1, cyclohexyl-1 et cyclododecyl-1 dihydro-1,2 pyridinethiones-2 dans l'acide pyridineacetique
反应 photochimique d'[adamantyl-2]-2, [adamantyl-1]-1, cyclohexyl-1 et cyclododecyl-1 dihydro-1,2 pyridinethiones-2 dans l'acide pyridineacetique
Photoinduced SET for the functionalization of alkanes
作者:Mariella Mella、Mauro Freccero、Angelo Albini
DOI:10.1039/c39950000041
日期:——
Thermochemical cycles show that deprotonation of alkane radical cations is an exothermic process, and indeed photoinduced SET between several alkanes and 1,2,4,5-tetracyanobenzene (TCB) is followed by efficient deprotonation of the radical cation with tertiary > secondary > primary selectivity; the alkyl radical is trapped by TCB˙– or, when present, by oxygen; when tetrachloro-p-benzoquinone is used in the place of TCB, the radical is further oxidized to the cation.
The Ozone and Hydroperoxide Teamwork: Synthesis of Unsymmetrical Geminal Bisperoxides from Alkenes
作者:Dmitri I. Fomenkov、Roman A. Budekhin、Vera A. Vil’、Alexander O. Terent’ev
DOI:10.1021/acs.orglett.3c01477
日期:2023.6.30
Alkene ozonolysis is mostly known as a textbook reaction, resulting in carbonyl compounds. The combination of ozone and hydroperoxide was found to lead to the construction of more oxygen-rich compounds, unsymmetrical geminal bisperoxides, avoiding as well further oxidation with ozone, hydroperoxide, and oxygen as peroxide rearrangements. The discovered three-component synthesis provided alkylperoxy