Coordination-induced reductive elimination and titanium(II) carbenoid transfer in reactions of dialkyltitanium(IV) complexes with unsaturated organic substrates

摘要

Dialkyltitanium(IV) derivatives, R2TiE2, where E = X, OR, react with unsaturated organic substrates, such as olefins, acetylenes, azoarenes, aldehydes, ketones, and imines, to undergo in high yield epimetalation with TiE2 by transfer. In a general fashion, this finding now permits the stoichiometric generation of these three-membered titanacycles from diverse unsaturated substrates and their transformation into useful, metal-free derivatives by protolysisldeuteriolysis, oxidation, or unsaturated monomer insertion at the C-Ti bond. [References: 21]