Relative reactivities of halogen-substituted substrates (R-Br, R-Cl) toward the halophilic attack by a carbanion期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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

Authors:	FU Weimin ZHANG Xiaojun JIANG Xikui

Institution:	Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences,

Abstract:	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.

Keywords:	relative reactivities halogen-substituted substrates relative rates of halophilic attacks intermolecular competition kinetics
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