Facile Approach to Optically Active α-Alkylidene-β-amino Esters by Thermal Overman Rearrangement
作者:Sung Il Lee、Soon Young Moon、Geum-Sook Hwang、Do Hyun Ryu
DOI:10.1021/ol1011746
日期:2010.7.16
A convenient synthetic method for enantioenriched (E)-α-alkylidene-β-amino esters has been developed through thermal Overman rearrangement. Readily accessible (Z)-β-branched Morita−Baylis−Hillman esters serve as chiral pool precursors. Thermal rearrangement proceeded through a concerted pseudopericyclic transition state to produce (E)-stereoselective products. We expanded the synthetic utilities of
通过热超人重排已经开发了一种方便的合成方法,用于富集对映体的(E)-α-亚烷基-β-氨基酯。易于获得的(Z)-β支化的森田-贝利斯-希尔曼酯用作手性库前体。热重排通过一致的伪周环过渡态进行,以产生(E)-立体选择性产物。通过制备α-亚烷基-β-内酰胺衍生物,我们扩展了α-亚烷基-β-氨基酯的合成用途。