论文部分内容阅读
Relative reactivities of bromine-substituted substrates (R-Br) or chlorine-substituted substrates (R-CI) toward bromophilic or chlorophilic attack by a carbanion have been evaluated by the intermolecular competition kinetics. Relative reactivity orders are CF3CFBr2 >CF3CBr3≥CBr4 > CHBr3 > CF3CFBrCF2Br > CF2Br2 > BrCF2CF2Br > BrCH2CO2Et≥ BrCF2CFHBr > CH2Br2 > BrCH2CH2Br, and CI3CNO2 > CI3CCN > CI3CCOPh > cyclo-C5CI6> CI3CCOCI > CCI3CF2CI > CCI3CF3 ≥ CCI4 > CCI3CCI3 ≥ CCI3(CF2)2CI > CI3CCOCCI3 > CCI3(CF2)6CI > CI3CCO2Et > CI3CF > CI3CPh>CI3CCH2O2CCH3.
Relative reactivities of bromine-substituted substrates (R-Br) or chlorine-substituted substrates (R-CI) toward bromophilic or chlorophilic attack by a carbanion have been evaluated by the intermolecular competition kinetics. Relative reactivities of CF3CFBr2> CF3CBr3> CBr4> CHBr3 > CF3CFBrCF2Br> CF2Br2> BrCF2CF2Br> BrCH2CO2Et> BrCF2CFHBr> CH2Br2> BrCH2CH2Br and CI3CNO2> CI3CCN> CI3CCOPh> cyclo- C5CI6> CI3CCOCI> CCI3CF2CI> CCI3CF3> CCI4> CCI3CCI3> CCI3 (CF2) 2CI> CI3CCOCCI3> CCI3 (CF2) CI3CCO2Et> CI3CF> CI3CPh> CI3CCH2O2CCH3.