Asymmetric addition of ethyl azidoformate to optically active enamines. Reversal of facial selectivity compared with (ethoxycarbonyl)nitrene
作者:Stefania Fioravanti、M. Antonietta Loreto、Lucio Pellacani、Paolo A. Tardella
DOI:10.1016/s0957-4166(00)82283-1
日期:1990.1
Thermal reaction of ethyl azidoformate with proline-derived optically active enamines of cyclohexanone, followed by photolysis, proceeds with opposite facial selectivity to that observed using (ethoxycarbonyl)nitrene. A tentative explanation is proposed. The absolute configuration of the main product, 2-(ethoxycarbonylamino)cyclohexanone (6), was deduced by chemical correlation.
叠氮甲酸乙酯与脯氨酸衍生的环己酮的旋光烯胺的热反应,然后进行光解,其面部选择性与使用(乙氧基羰基)硝烯观察到的相反。提出了一个初步的解释。通过化学相关推导了主要产物2-(乙氧基羰基氨基)环己酮(6)的绝对构型。