Reactivity of an electrophilic hypervalent iodine trifluoromethylation reagent with hydrogen phosphates—A mechanistic study
作者:Nico Santschi、Patrik Geissbühler、Antonio Togni
DOI:10.1016/j.jfluchem.2011.08.014
日期:2012.3
The electrophilic trifluoromethylation of hydrogen phosphates with the reagent trifluoromethyl-1,3-dihydro-3,3-dimethyl-1,2-benziodoxole (1) was studied by means of initial rates determined for pseudo first order setups and subsequent Taft analysis of the calculated relative rates. A positive polar sensitivity factor, indicative of a negative charge forming during the rate-determining step, was found
用拟一级装置确定的初始速率和随后的塔夫脱(Taft)分析法研究了用试剂三氟甲基-1,3-二氢-3,3-二甲基-1,2-苯并恶唑(1)对磷酸氢的亲电三氟甲基化反应。计算的相对比率。对于整个数据集,发现了一个正极性灵敏度因子,表明在速率确定步骤中形成了负电荷。