| Autor: |
Hoover, J. M., Petersen, J. R., Pikul, J. H., Johnson, A. R. |
| Zdroj: |
Organometallics; September 2004, Vol. 23 Issue: 20 p4614-4620, 7p |
| Abstrakt: |
Intramolecular hydroamination of aminoallenes is catalyzed by titanium complexes with a number of chiral amino alcohols. The ring-closing reaction of hepta-4,5-dienylamine at 110 °C with 5 mol % catalyst gives a mixture of 6-ethyl-2,3,4,5-tetrahydropyridine (14−33%) and both Z- and E-2-propenylpyrrolidine (67−86%). However, the ring-closing reaction of 6-methylhepta-4,5-dienylamine at 135 °C with 5 mol % catalyst gives exclusively 2-(2-methylpropenyl)pyrrolidine. The pyrrolidine products are obtained with enantiomeric excesses up to 16%. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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