The solution structure of β,γ-dioxoalkyl(triphenyl)phosphonium salts
作者: R.Alan AitkenNazira Karodia
作者单位: 1School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife, UK KY16 9ST
刊名: Tetrahedron, 1998, Vol.54 (31), pp.9223-9228
来源数据库: Elsevier Journal
DOI: 10.1016/S0040-4020(98)00571-7
关键词: Phosphonium saltsNMREnols and derivativesYlides
原始语种摘要: Abstract(#br)The simple phosphonium salts 4 and 5 have been fully characterised for the first time and are found by NMR spectroscopy to exist in CDCl 3 solution mainly as the E and Z enol structures b and c . The salt 6 exists as a mixture of the keto form a and one enol form assumed to be b . Similarly the bis(phosphonium salt) 16 exists entirely with one end in the keto form and the other in the enol form. The ylide/phosphonium salt 17 obtained from 16 by treatment with base also exists as an enol which is resistant to further deprotonation. Fully assigned 13 C NMR spectra are presented for all the structures involved.
全文获取路径: Elsevier  (合作)
影响因子:2.803 (2012)

  • phosphonium 膦根
  • salts 盐类
  • triphenyl 三苯基
  • solution 溶液
  • NMR N-Modular Redundancy
  • derivatives 派生物
  • mixture 混合物
  • structure 构造
  • resistant 耐久的
  • treatment 处理