Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 28, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202103931
Keywords
alkynes; amines; C-H activation; hydroaminoalkylation; titanium
Categories
Funding
- Research Training Group Chemical Bond Activation [GRK 2226]
- Deutsche Forschungsgemeinschaft
- Heinz Neumuller Stiftung
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Intermolecular hydroaminoalkylation reactions of symmetrical and unsymmetrical alkynes with tertiary amines were achieved with catalytic amounts of TiBn4, Ph3C[B(C6F5)(4)], and a sterically demanding aminopyridinato ligand precursor. The resulting products, synthetically and pharmaceutically useful tertiary beta,gamma-disubstituted allylic amines, were obtained in high yields and excellent stereoselectivity. The fact that even the industrial side product trimethylamine can be used as a substrate is particularly promising for future applications.
Intermolecular hydroaminoalkylation reactions of symmetrical and unsymmetrical alkynes with tertiary amines take place in the presence of catalytic amounts of TiBn4, Ph3C[B(C6F5)(4)], and a sterically demanding aminopyridinato ligand precursor. The resulting products, synthetically and pharmaceutically useful tertiary beta,gamma-disubstituted allylic amines, are formed in convincing yields and with excellent stereoselectivity. Particularly promising for future applications is the fact that even the industrial side product trimethylamine can be used as a substrate.
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