Utilising Sodium-Mediated Ferration for Regioselective Functionalisation of Fluoroarenes via C−H and C−F Bond Activations
作者:Lewis C. H. Maddock、Tracy Nixon、Alan R. Kennedy、Michael R. Probert、William Clegg、Eva Hevia
DOI:10.1002/anie.201709750
日期:2018.1.2
Pairing iron bis(amide) Fe(HMDS)2 with Na(HMDS) to form new sodium ferrate base [(dioxane)0.5⋅NaFe(HMDS)3] (1) enables regioselective mono and di‐ferration (via direct Fe−H exchange) of a wide range of fluoroaromatic substrates under mild reaction conditions. Trapping of several ferrated intermediates has provided key insight into how synchronised Na/Fe cooperation operates in these transformations
配对铁双(酰胺)的Fe(HMDS)2用Na(HMDS),以形成新的高铁酸钠基[(二恶烷)0.5 ⋅NaFe(HMDS)3 ](1)使区域选择性单和二ferration(经由直接的Fe-H在温和的反应条件下交换各种氟代芳族底物。捕获数种高精化中间体的方法提供了关键的见解,以了解同步的Na / Fe合作如何在这些转化过程中发挥作用。此外,在80°C下使用过量的1会在一个引人注目的级联过程中引发集体的双重C / H /三重C-F键活化,其中每个C-H键均转换为C-Fe键,而每个C-F键被转化为CN键
Deacon, Glen B.; Smith, Richard N.M., Australian Journal of Chemistry, 1982, vol. 35, # 8, p. 1587 - 1597
作者:Deacon, Glen B.、Smith, Richard N.M.
DOI:——
日期:——
DEACON, G. B.;SMITH, R. N. M., AUSTRAL. J. CHEM., 1982, 35, N 8, 1587-1597
作者:DEACON, G. B.、SMITH, R. N. M.
DOI:——
日期:——
Mongin, Florence; Marzi, Elena; Schlosser, Manfred, European Journal of Organic Chemistry, 2001, # 14, p. 2771 - 2777
3-didehydrobenzene 6b−6f were generated by UV photolysis of the corresponding 1,3-diiodobenzene derivatives 4b−4f in solid neon at 3 K. The photolysis of 1 proceeds stepwise via the phenyl radical intermediates 5b−5f. The radicals 5 and m-benzynes 6 were identified by comparison of their experimentally measured IR spectra with those produced by DFT calculations. The formation of mono- and diradicals 5 and 6, respectively