A Mechanistic Study of Halogen Addition and Photoelimination from π-Conjugated Tellurophenes
作者:Elisa I. Carrera、Anabel E. Lanterna、Alan J. Lough、Juan C. Scaiano、Dwight S. Seferos
DOI:10.1021/jacs.5b11649
日期:2016.3.2
electron-withdrawing substituents have the highest photochemical quantum efficiencies in the presence of an alkene trap, with efficiencies of up to 42.4% for a pentafluorophenyl-functionalized tellurophene. The photoelimination reaction was studied in detail through bromine trapping experiments and laser flash photolysis, and a mechanism is proposed. The photoreaction, which occurs by release of bromine radicals, is
The functionalization of saturated hydrocarbons. Part 23. Gif-type bromination and chlorination of saturated hydrocarbons: a non-radical reaction
作者:Derek H.R. Barton、Éva Csuhai、Darío Doller
DOI:10.1016/s0040-4020(01)85610-6
日期:1992.1
The bromination of saturatedhydrocarbons was studied in the GoAggIII system using CBrCl3 and other polyhaloalkanes. This bromination reaction was compared to free radical processes by (i) evaluating the rates of reactions for a series of polyhaloalkanes, by (ii) measuring the selectivity of the different systems towards various saturatedhydrocarbons and by (iii) analyzing the product distribution
Hydroalumination of alkenes by the LiAlH4 � 3AlBr3 system
作者:E. V. Gorobets、O. V. Shitikova、S. I. Lomakina、G. A. Tolstikov、A. V. Kuchin
DOI:10.1007/bf00699198
日期:1993.9
3AlBr3 system in low-polar solvents was studied. Alkenes with mono-, di-, tri-, and tetraalkyl substituted, mono- and diaryl substituted doublebonds and anthracene react at room temperature to give the corresponding dibromoaluminoalkanes in high yields. Benzylidenefluorene, tetraphenylethylene, naphthalene, and phenanthrene do not undergo hydroalumination under these conditions. Camphene, bicyclo[3.2
A convenient and general preparation of alkyl hydroperoxides and dialkyl peroxides
作者:Peter G. Cookson、Alwyn G. Davies、Brian P. Roberts
DOI:10.1039/c39760001022
日期:——
Primary, secondary, and tertiary alkylhydroperoxides and dialkyl peroxides can be prepared from the appropriate alkyl bromide or iodide and hydrogen peroxide or alkylhydroperoxide in the presence of silver trifluoroacetate.
Boron trifluoride etherate/halide ion, a novel reagent for the conversion of allyl, benzyl and tertiary alcohols to the halides
作者:Arun K. Mandal、S.W. Mahajan
DOI:10.1016/s0040-4039(00)89271-0
日期:1985.1
A combination of boron trifluoride etherate and halide ion is found to be an excellent reagent for the conversion of allyl, benzyl and tertiary alcohols to the halides.