reactions of secondary straight-chain aliphatic alcohols with lead tetraacetate, ceric ammonium nitrate, and heavy metal (Pb4+, Hg2+, Ag+) salts (AcO)−1, O2−, CO32−-halogen (I2, Br2, Cl2) combinations are discussed. By demonstrating the intermediacy of 5-bromo-2-hexanol, it was confirmed that the dark silver oxidebromine induced cyclisation of 2-hexanol (and alcohols in general) involves (as the other hypohalite
在与四乙酸铅,硝酸铈铵,和重金属次级直链脂族醇的反应的机制和δ-C原子的官能化的立体化学(铅4+,汞2+,银+)盐(ACO)-1, O 2−,CO 3 2-卤素(I 2,Br 2,Cl 2)组合。通过证明5-溴-2-己醇的中间性,证实了暗氧化银溴诱导的2-己醇(和一般的醇类)环化涉及(作为其他次卤代反应)分子内通过烷氧基提取1,5-氢自由基和δ-溴代醇的形成。描述了一种新颖且简单的方法,该方法通过使用银盐或汞盐以及氯气通过次氯酸盐反应从醇中获得四氢呋喃。
Remote functionalisation by ferrous ion-cupric ion induced decomposition of alkyl hydroperoxides
作者:Ž. Čekovió、Lj. Dimttruević、G. Djokić、T. Srnić
DOI:10.1016/s0040-4020(01)88972-9
日期:1979.1
By decomposition of alkyl hydroperoxides 1-8 with ferrous sulfate-cupric acetate reagent, intramolecular functionalisation of remote non-activated C atom takes place and unsaturated alcohols with double bond mainly at δ-position are obtained. The reaction proceeds involving the corresponding alkoxy radical 9 and δ-carbon radical 10 as intermediates. One-electron oxidative interception of δ-carbon radical
通过用硫酸亚铁-乙酸亚铜试剂分解氢过氧化物烷基1-8,进行远程未活化C原子的分子内官能化,并获得主要在δ位具有双键的不饱和醇。反应进行,其中包含相应的烷氧基自由基9和δ-碳自由基10作为中间体。乙酸铜单电子氧化δ-碳自由基不涉及相应的碳离子;取而代之的是,形成烷基铜中间体11,并通过消除得到烯烃醇。发现该消除过程的同位素效应为k h / k d = 6.1。
Dauzonne,D. et al., Journal of Heterocyclic Chemistry, 1979, vol. 16, p. 39 - 45
作者:Dauzonne,D. et al.
DOI:——
日期:——
Delaney, Paul A.; Johnstone, Robert A. W.; Entwistle, Ian D., Journal of the Chemical Society. Perkin transactions I, 1986, p. 1855 - 1860
作者:Delaney, Paul A.、Johnstone, Robert A. W.、Entwistle, Ian D.
DOI:——
日期:——
Oxidative ?-chlorination of aliphatic alcohols in the system lead tetraacetate-metal chloride