Unexpected titanium shifts during cyclopropanation of N,N-dibenzylformamide with ligand-exchanged titanium-alkadiene complexes - Research portal of Justus Liebig University Giessen:

Journal article

Unexpected titanium shifts during cyclopropanation of N,N-dibenzylformamide with ligand-exchanged titanium-alkadiene complexes

Authors list: Williams, CM; Chaplinski, V; Schreiner, PR; de Meijere, A

Publication year: 1998

Pages: 7695-7698

Journal: Tetrahedron Letters

Volume number: 39

Issue number: 42

ISSN: 0040-4039

DOI Link: https://doi.org/10.1016/S0040-4039(98)01665-7

Publisher: Elsevier

Abstract:
A number of readily available dienes and a triene were applied to exchange the alkene ligand on the in situ generated titanium-alkene complexes which react with N,N-dialkylcarboxamides to give N,N-dialkylcyclopropylamines. The ligand-exchanged intermediates were found to give the most highly substituted alkenylcyclopropylamines (abnormal products) in good yields (47-64%), rather than the least substituted alkenylcyclopropylamine (expected products). This has been attributed to an unforeseen and unprecedented titanium migration along the ligand.

Authors/Editors

- Uni.-Prof. Dr. Peter Richard Schreiner, PhD

Citation Styles

Harvard Citation style: Williams, C., Chaplinski, V., Schreiner, P. and de Meijere, A. (1998) Unexpected titanium shifts during cyclopropanation of N,N-dibenzylformamide with ligand-exchanged titanium-alkadiene complexes, Tetrahedron Letters, 39(42), pp. 7695-7698. https://doi.org/10.1016/S0040-4039(98)01665-7

APA Citation style: Williams, C., Chaplinski, V., Schreiner, P., & de Meijere, A. (1998). Unexpected titanium shifts during cyclopropanation of N,N-dibenzylformamide with ligand-exchanged titanium-alkadiene complexes. Tetrahedron Letters. 39(42), 7695-7698. https://doi.org/10.1016/S0040-4039(98)01665-7