Radical Silyldifluoromethylation of Electron-Deficient Alkenes
A reaction of bromo- and iododifluoromethyl-substituted silanes with electron-deficient alkenes in the presence of an N-heterocyclic carbene borane complex is described. The reaction is performed under irradiation with light-emitting diodes and proceeds v
Supranovich, Vyacheslav I.,Levin, Vitalij V.,Struchkova, Marina I.,Korlyukov, Alexander A.,Dilman, Alexander D.
Preparation of (Trimethylsilyl)methyl Halides and Trifluoromethanesulfonate by Methylene Insertion Using Diazomethane
(Trimethylsilyl)methyl halides (1,3) and trifluoromethanesulfonate (triflate) (2) were prepared by inserting a methylene group into the silicon-heteroatom bond of trimethylsilyl halides and triflate using diazomethane.
LEWIS ACID CATALYZED HALOGENATION OF ACTIVATED CARBON ATOMS
A practical and efficient method for halogenation of activated carbon atoms using readily available /V-haloimides and a Lewis acid catalyst has been disclosed. This methodology is applicable to a range of compounds and any halogen atom can be directly introduced to the substrate. The mild reaction conditions, easy workup procedure and simple operation make this method valuable from both an environmental and preparative point of view.
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Page/Page column 30; 44-45
(2008/06/13)
Electrophilic cleavages in (CH3)3SnCH2M(CH3)3 (M = Sn, Ge, Si, C). 1. Product distribution
The extent to which Sn-CH2 and/or Sn-CH3 cleavage occurs in (CH3)3SnCH2M(CH3)3 (M = Sn, Ge, Si) in reactions with several electrophiles has been determined. With iodine and with
Hawker, Darryl W.,Wells, Peter R.
p. 821 - 825
(2008/10/08)
STABILIZATION IN THE ORDER I>Br>Cl AMONG TRIMETHYLSILYLMETHYL HALIDES, COMPARED TO CARBON ANALOGS. POSSIBLE ROLE OF ELECTRONEGATIVITY IN ORGANOSILICON CHEMISTRY
Electronegativities may be used to rationalize the observation that the equilibrium, CH3(CH2)3I + (CH3)3SiCH2Cl CH3(CH2)3Cl + (CH3)3SiCH2I, lies to the right.
Peterson, Paul E.
p. 1295 - 1298
(2007/10/02)
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