Relative reactivities of halogen-substituted substrates (R-Br,R-C1) toward the halophilic attack by a carbanion

Relative reactivities of halogen-substituted substrates (R-Br,R-C1) toward the halophilic attack by a carbanion

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摘要 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 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.

作者傅伟敏张晓军蒋锡夔

出处《Science China Chemistry》 SCIE EI CAS 2001年第4期337-343,共7页 中国科学（化学英文版）

关键词相对反应代替卤素的底层 halophilic 攻击的相对的率分子间的比赛动力学 relative reactivities halogen-substituted substrates relative rates of halophilic attacks intermolecular competition kinetics

分类号 O643.1 [理学—物理化学]

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Science China Chemistry

2001年第4期

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Relative reactivities of halogen-substituted substrates (R-Br,R-C1) toward the halophilic attack by a carbanion

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