3-Metallierte Enamine XI<sup>1</sup>Transmetallierung 3-stannylierter Enamine<sup>2</sup>- Eine neue Methode zur Herstellung von 1-Aminoallyllithium-Verbindungen
作者:Hubertus Ahlbrecht、Peter Weber
DOI:10.1055/s-1992-26292
日期:——
3-Metallated Enamines XI1 Transmetallation of 3-Stannylated Enamines2 - a New Method to Generate 1-Aminoallyllithium Compounds The transmetallation of 3-stannylated enamines,3 1-morpholino-3-(trialkylstannyl)cycloalk-1-enes and 3-morpholino-5-(tributylstannyl)hex-3-ene, with butyllithium is a new and general way to generate 1-aminoallyllithium compounds. Stabilization by aromatic substituents is not further necessary as in the case of preparation by deprotonation and even the thermodynamically less stable exo- amino derivatives are accessible. Therefore homoenolate-equiva- lents of cyclic ketones are made available. Thus, the corresponding 3-alkylated or 3-silylated cycloalkanones and alken-3-ones were prepared via the 1-morpholinoallyllithium compounds.
Sonication allows the efficient preparation of various organozincreagents, which cleanly add in a conjugate fashion to α-enones in the presence of Ni(acac)2.
Ultrasound in organic synthesis. 7. Preparation of organozinc reagents and their nickel-catalyzed reactions with .alpha.,.beta.-unsaturated carbonyl compounds
作者:Christian Petrier、Jayne De Souza Barbosa、Claude Dupuy、Jean Louis Luche
DOI:10.1021/jo00350a065
日期:1985.12
PETRIER, C.;DE, SOUZA, BARBOSA, J. C.;DUPUY, C.;LUCHE, J. -L., J. ORG. CHEM., 1985, 50, N 26, 5761-5765
作者:PETRIER, C.、DE, SOUZA, BARBOSA, J. C.、DUPUY, C.、LUCHE, J. -L.
DOI:——
日期:——
PETRIER, CH.;LUCHE, J. -L.;DUPUY, C., TETRAHEDRON LETT., 1984, 25, N 32, 3463-3466