New Regiocontrolled Synthesis of Functionalized Pyrroles from 2-Azetidinone-Tethered Allenols
作者:Benito Alcaide、Pedro Almendros、Rocío Carrascosa、María C. Redondo
DOI:10.1002/chem.200700788
日期:2008.1.7
A new one-pot approach to synthesize densely substituted racemic and enantiopure pyrroles from beta-lactams has been developed. The approach relies on the regiocontrolled cyclization of beta-allenamine intermediates derived from the ring opening of 2-azetidinone-tethered allenols. In this approach four points of diversity are introduced, one of which is the position of the allene moiety on the beta-lactam
已开发出一种新的一锅法,可从β-内酰胺合成密集取代的外消旋和对映纯吡咯。该方法依赖于衍生自2-氮杂环丁酮系链的烯丙醇的开环的β-亚胺胺中间体的区域控制环化。在这种方法中,引入了四个多样性点,其中之一是β-内酰胺环上丙二烯部分的位置。