Zirconium Hydrazinediido Complexes Derived from Cyclic Hydrazines and Their Role in the Catalytic Synthesis of 1,7-Annulated Indoles
- Solveig A. Scholl (1995163)
- Hubert Wadepohl (1264056)
- Lutz H. Gade (1353462)
DOIAbstract
Reaction of cyclic 1,1′-disubstituted hydrazines with the bis(dimethylamido)zirconium complex [Zr{(N<sup>Xyl</sup>)<sub>2</sub>N<sub>py</sub>} (NMe<sub>2</sub>)<sub>2</sub>] (<b>1</b>) in the presence of dmap yielded the hexacoordinate zirconium hydrazinediido complexes [Zr{(N<sup>Xyl</sup>)<sub>2</sub>N<sub>py</sub>}(NNC<sub>9</sub>H<sub>10</sub>)(dmap)<sub>2</sub>] (<b>2</b>) and [Zr{(N<sup>Xyl</sup>)<sub>2</sub>N<sub>py</sub>}(NNC<sub>12</sub>H<sub>8</sub>)(dmap)<sub>2</sub>] (<b>3</b>). Hydrazinediides are thought to be key intermediates in the zirconium-catalyzed reaction of cyclic 1,1′-disubstituted hydrazines and disubstituted alkynes to yield 1,7-annulated indoles. Their basic structural motif is found in 5-HT<sub>3</sub> ...
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