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.
3-金属化的亚胺 XI1 3-锡基亚胺的转金属化 - 生成 1-氨基烯基锂化合物的新方法
3-锡基亚胺与丁基锂的转金属化是一种新颖且通用的方法,用于生成 1-氨基烯基锂化合物(如 1-吗啉-3-(三烷基锡基)环烯-1 和 3-吗啉-5-(三丁基锡基)己烯-3)。与通过去质子化的方法不同,芳香取代基的稳定化不再是必需的,即使是热力学上不太稳定的外源氨基衍生物也可以获取。因此,环酮的同源烯醇等价物得以实现。因此,通过 1-吗啉烯基锂化合物合成了相应的 3-烷基化或 3-硅化的环酮和烯-3-酮化合物。