Interconversion of contact and separated ion pairs in silyl- and arylthio-substituted alkyllithium reagents.

نویسندگان

  • Hans J Reich
  • William H Sikorski
  • Jennifer L Thompson
  • Aaron W Sanders
  • Amanda C Jones
چکیده

Ether-solvated contact and separated ion pairs (CIP and SIP) for two lithium reagents, tris(trimethylsilyl)methyllithium (1) and bis(3,5-bistrifluoromethylphenylthio)methyllithium (2), have been characterized and observed for the first time under conditions of slow exchange by NMR spectroscopy, and barriers to interconversion have been measured. A Saunders isotope perturbation experiment was used to support identification of the CIP and SIP species for 2.

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عنوان ژورنال:
  • Organic letters

دوره 8 18  شماره 

صفحات  -

تاریخ انتشار 2006