Visible Light-Induced Oxidative Chlorination of Alkyl sp<sup>3</sup> C–H Bonds with NaCl/Oxone at Room Temperature
作者:Mengdi Zhao、Wenjun Lu
DOI:10.1021/acs.orglett.7b02153
日期:2017.9.1
light-induced monochlorination of cyclohexane with sodium chloride (5:1) has been successfully accomplished to afford chlorocyclohexane in excellent yield by using Oxone as the oxidant in H2O/CF3CH2OH at room temperature. Other secondary and primary alkyl sp3 C–H bonds of cycloalkanes and functional branch/linear alkanes can also be chlorinated, respectively, under similar conditions. The selection of
Synthesen in der Biotinreihe IV. Herstellung substituierter Thiophane
作者:C. A. Grob、H. Von Sprecher
DOI:10.1002/hlca.19520350331
日期:1952.5.2
Es wird eine Methode zum Aufbau von 2-substituierten 3,4-Diaminothiophanen mit Hilfe neuartiger Umsetzungen aliphatischer Nitroverbindungen beschrieben. Insbesondere wurde das bereits bekannte 2-Methyl-3,4-(2′ -oxo-tetrahydro-imidazol)-thiophan (IXa) nach dieser Methode hergestellt.
Visible-Light-Driven Oxidative Chlorination of Alkyl sp3 C–H Bonds with HCl/Air at Room Temperature
作者:Wenjun Lu、Lai Xu、Chong Mei
DOI:10.1055/a-2261-3255
日期:——
An aerobic chlorination of alkyl sp3 C–H bonds of functionalized alkanes and simple alkanes has been established successfully undervisiblelight at room temperature. The reaction is performed in the presence of catalytic NaNO2 using HCl or NaCl/acid as a chlorine source and air as a terminal oxidant under atmospheric pressure. It is suggested that NOCl from NaNO2/HCl is a crucial species in the catalytic