在强酸催化剂存在下,烯烃与含有 0.25 M 三氟乙酸酐的三氟乙酸发生快速反应。测定了五种正己烯的三氟乙酰化焓,并校正为对应于三氟乙酸2-己酯和三氟乙酸3-己酯的平衡混合物形成的焓。后者之间的焓差是通过测量作为温度函数的平衡常数来确定的。三氟乙酰化数据可以与测得的烯烃形成焓相结合,以获得后者的更精确值。测定了水、2-己醇和3-己醇与反应溶剂的反应焓,
Observations on the transition-metal catalysed oxidation of alkanes in trifluoroacetic acid: urea–hydrogen peroxide/TFA as a convenient method for the oxidation of unactivated C–H bonds
作者:Christopher J. Moody、Jenny L. O’Connell
DOI:10.1039/b003074k
日期:——
Oxidation of cyclohexane in TFA using 30% aqueous
H2O2 or ureaâH2O2 (UHP)
gives cyclohexyl trifluoroacetate in good yield, although the reaction is
not accelerated by rhodium or ruthenium catalysts casting doubt on earlier
claims on the role of transition-metals in oxidations in TFA.
Selective oxidation of n-alkanes with lead tetraacetate
作者:R.D. Bestre、E.R. Cole、G. Crank
DOI:10.1016/s0040-4039(00)94304-1
日期:1983.1
Alkanes, when treated with leadtetraacetate under thermal or photochemical conditions, undero a slow but highly selective oxidation to form secondary acetates.
Ruthenium-catalysed oxidation of alkanes with peracetic acid in trifluoroacetic acid: ruthenium as an efficient catalyst for the oxidation of unactivated C–H bonds
Aerobic Partial Oxidation of Alkanes Using Photodriven Iron Catalysis
作者:Nathan Coutard、Jonathan M. Goldberg、Henry U. Valle、Yuan Cao、Xiaofan Jia、Philip D. Jeffrey、T. Brent Gunnoe、John T. Groves
DOI:10.1021/acs.inorgchem.1c03086
日期:2022.1.17
Photodriven oxidations of alkanes in trifluoroacetic acid using commercial and synthesized Fe(III) sources as catalystprecursors and dioxygen (O2) as the terminal oxidant are reported. The reactions produce alkyl esters and occur at ambient temperature in the presence of air, and catalytic turnover is observed for the oxidation of methane in a pure O2 atmosphere. Under optimized conditions, approximately
报道了使用商业和合成的 Fe(III) 源作为催化剂前体和分子氧 (O 2 ) 作为末端氧化剂的三氟乙酸中烷烃的光驱动氧化。该反应产生烷基酯并在空气存在下在环境温度下发生,并且在纯 O 2气氛中观察到甲烷氧化的催化转化。在优化条件下,观察到大约 17% 的甲烷转化为三氟乙酸甲酯,选择性超过 50%。证明三氟乙酸甲酯在催化条件下是稳定的,因此不会通过三氟乙酸甲酯的二次氧化形成过氧化产物。
1,2-, 1,4-, 1,5-, and 1,6-Halogen participation in the trifluoroacetolysis of primary alkyl nosylates