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2004
Amination
O 0268
45- 052
Catalytic Hydroamination of Alkynes and Norbornene with Neutral and Cationic
Tantalum Imido Complexes. — Neutral and cationic tantalum imido complexes are
used as effective catalysts for the hydroamination of alkynes, allenes, and norbornene.
The cationic tantalum complex generated in situ under conditions A) demonstrates an
enhanced reactivity toward more challenging substrates such as ortho-substituted anilines and allenes. The intermolecular hydroamination of (XXII) is one of the first examples of these reactions achieved with an early transition metal catalyst. —
(ANDERSON, L. L.; ARNOLD*, J.; BERGMAN, R. G.; Org. Lett. 6 (2004) 15,
2519-2522; Dep. Chem., Univ. Calif., Berkeley, CA 94720, USA; Eng.) — Steudel
2004
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