Aminotroponate Zinc Complexes as Catalysts for the Intramolecular Hydroamination of Alkenes and Alkynes
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- 作者：Nils Meyer ; Karolin Lö ; hnwitz ; Agustino Zulys ; Peter W. Roesky ; Maximilian Dochnahl ; and Siegfried Blechert
- 刊名：Organometallics
- 出版年：2006
- 出版时间：July 17, 2006
- 年：2006
- 卷：25
- 期：15
- 页码：3730 - 3734
- 全文大小：92K
- 年卷期：v.25,no.15(July 17, 2006)
- ISSN：1520-6041
文摘
The dimeric complexes 2-(isopropylamino)troponate zinc methyl and ethyl [(iPrAT)Zn-R]2 (R = Me(2a), Et (2b)) were synthesized by reaction of (iPrAT)H with dimethyl and diethyl zinc, respectively, intoluene at low temperature. Reacting (iPrAT)H with dimethyl zinc at elevated temperature resulted inthe double-substituted complex [(iPrAT)2Zn] (3). Compounds 2a,b, which were investigated by single-crystal X-ray diffraction, are dimeric in the solid state. The metal centers are bridged asymmetrically bytwo (
)-oxygen atoms; thus a flat Zn-O-Zn'-O' plane is observed. Compounds 2a,b were used as thecatalyst in the intramolecular hydroamination reaction of nonactivated terminal aminoolefins and oneaminoalkyne. Good catalytic activities at elevated temperature were observed.
)-oxygen atoms; thus a flat Zn-O-Zn'-O' plane is observed. Compounds 2a,b were used as thecatalyst in the intramolecular hydroamination reaction of nonactivated terminal aminoolefins and oneaminoalkyne. Good catalytic activities at elevated temperature were observed.