Alkyne Carboaminationwith Imines Catalyzed by [py<sub>2</sub>TiCl<sub>2</sub>N(<i>p</i>‑tol)]<sub>2</sub>
α,β-Unsaturated imines are valuable functional groups that lack a general, reliable synthetic route. Here, we report that simple Ti imido halide precatalysts of the type [py<sub>2</sub>TiCl<sub>2</sub>N(Ar)]<sub>2</sub> can catalyze alkyne carboamination with imines, yielding highly substituted α,β-unsaturated imines. [py<sub>2</sub>TiCl<sub>2</sub>N(Ar)]<sub>2</sub> complexes can catalyze an expanded scope of substrates relative to earlier-reported cationic Ti complexes, albeit with modest yields. Several key side products of carboamination have been identified, indicating that low-valent Ti species resulting from catalyst decomposition may be limiting productive catalysis.
Publication Details
- Journal
- Figshare
- Published
- 2025-01-28
- DOI
- https://doi.org/10.1021/acs.organomet.4c00499.s001
- Primary Topic
- Mycorrhizal Fungi and Plant Interactions
- Type
- article
- Field-Weighted Citation Impact
- 0.00