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Titanium-mediated reductive cross-coupling reactions of imines with nitriles: an efficient route for the synthesis of α-aminoketones or 1,2-diketones.
- Source :
-
Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry . Feb2014, Vol. 55 Issue 9, p1593-1596. 4p. - Publication Year :
- 2014
-
Abstract
- Abstract: The reaction of imines with low-valent titanium species, generated in situ by using Ti(O i Pr)4/2 c-C5H9MgCl reagent, affords titanium–imine complex, which can couple with nitriles to provide 2,5-diazatitanacyclopentenes. α-Aminoketones are obtained in good yields by quenching the corresponding 2,5-diazatitanacyclopentenes with aqueous HCl solution. However, when the reaction is first quenched with MeOH in air followed by addition of aqueous HCl solution, 1,2-diketones are formed in good to high yields. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00404039
- Volume :
- 55
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 94568642
- Full Text :
- https://doi.org/10.1016/j.tetlet.2014.01.070