A general study of aryloxo and alkoxo ligands in the titanium-catalyzed intermolecular hydroamination of terminal alkynes

Annegret Tillack, Vivek Khedkar, Haijun Jiao, Matthias Beller

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

A general study of the regioselective hydroamination of terminal alkynes in the presence of Ti(NEt2)4 and different aryloxo and alkoxo ligands is presented. Depending on the ligand the regioselectivity towards the Markovnikov and the anti-Markovnikov addition product can be controlled. The experimentally observed isomer distribution is explained perfectly by detailed theoretical investigations which demonstrate that the regioselectivity is determined by the relative stability of the corresponding alkynetitanium π complexes.

Original languageEnglish
Pages (from-to)5001-5012
Number of pages12
JournalEuropean Journal of Organic Chemistry
Issue number23
DOIs
StatePublished - 25 Nov 2005
Externally publishedYes

Keywords

  • Alkynes
  • Anti-Markovnikov
  • DFT
  • Hydroamination
  • Markovnikov
  • Titanium complexes

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