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Some thermodynamic parameters of radicals

Some thermodynamic parameters of radicals. Radical initiators. some persistent (unreactive) radicals. Vitamine E tames radicals. Ketyl Radicals. ketyl radical anion in aprotic solvents. pinacol reaction. McMurry reaction. observed only if the reaction is carried out at low temperature.

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Some thermodynamic parameters of radicals

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  1. Some thermodynamic parameters of radicals Radical initiators

  2. some persistent (unreactive) radicals

  3. Vitamine E tames radicals Ketyl Radicals

  4. ketyl radical anion in aprotic solvents pinacol reaction

  5. McMurry reaction observed only if the reaction is carried out at low temperature

  6. Acyloin reaction

  7. the energy to be gained by pairing up the two electrons in the radical reaction step more than compensates for the strain that may be generated in forming the ring Carbon-carbon bond formation with radicals

  8. initiation propagation

  9. What has something to do with each radical's selectivity? # bond strength: Sn-C bond is relatively weak # the rate constant of R・with Bu3SnH is about the same as that for reaction with CH2=CHCN: should be [CH2=CHCN] > 10 x [Bu3SnH] , which, however, causes problems with side reactions. Therefore,Bu3SnH should be added very slowly. # # reactivity of starting alkyl halide: RBr or RI (relatively reactive) not RCl (too unreactive) hn

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