Die verwendung von diisobutylaluminiumhydrid zur stereoselektiven synthese von tertiären (e)-2-alkenylaminen, (e)-2-alken-4-inylaminen und 2(
作者:Anton Stütz、Waltraud Granitzer、Sabine Roth
DOI:10.1016/s0040-4020(01)91373-0
日期:1985.1
In exploring versatile synthetic routes to (E)-allylamine derivatives with antimycotic properties, a new method has been found in the trans-reduction of tertiary 2-alkinylanunes by diisobutylaluminum hydride (DIBAH). The stereoselectivity of this reaction, which is in contrast to the well-known cis-hydroalumination of disubstituted alkynes, and the regioselectivity have been studied in detail. Tertiary
在探索具有抗真菌特性的(E)-烯丙胺衍生物的通用合成途径中,发现了一种新的方法,用于通过氢化二异丁基铝(DIBAH)反式还原叔2-炔木酮。与公知的二取代炔烃的顺式-氢化铝化相反,已经详细研究了该反应的立体选择性和区域选择性。叔2- alkinylamines 1被普遍降低到(Ë)-2- alkenylamines 2在40℃甲苯°,和叔2,4- alkadiynylamines 3得到的(混合物ê)-2-链烯基-4- ynylamines 4和2(E),4(Z)-链二烯基胺5具有高立体化学纯度。与还通过反式氢铝化进行的其他反应相比,这种还原在反应性和选择性方面明显不同,即氢化铝锂还原α-羟基乙炔以及炔烃与LiAlH(iso -Bu)2(n -Bu )的反应。)。用氢化二异丁基铝将6-羟基-2,4-叔二炔胺叔胺10还原为6-羟基-2(E)-烯丙基-4-炔胺11,而用氢化铝锂处理6-羟基-4(