Synthesis and Stereochemical Characterization of a Novel Chiral α-Tetrazole Binaphthylazepine Organocatalyst
作者:Assunta Summa、Patrizia Scafato、Sandra Belviso、Guglielmo Monaco、Riccardo Zanasi、Giovanna Longhi、Sergio Abbate、Stefano Superchi
DOI:10.3390/molecules27165113
日期:——
1,1′-binaphthylazepine chiral catalyst has been synthesized and its absolute configuration has been determined by DFT computational analysis of the vibrational circular dichroism (VCD) spectrum of its precursor. The VCD analysis, carried out through the model averaging method, allowed to assign the absolute configuration of a benzylic stereocenter in the presence of a chiral binaphthyl moiety. The
合成了一种新型 α-四唑取代的 1,1'-联萘氮杂手性催化剂,并通过对其前体的振动圆二色谱 (VCD) 光谱的 DFT 计算分析确定了其绝对构型。通过模型平均方法进行的 VCD 分析允许在存在手性联萘部分的情况下指定苄基立体中心的绝对构型。1,1'-联萘四唑及其直接合成前体腈已作为手性有机催化剂在 2-羟基查耳酮的不对称分子内氧杂-迈克尔环化中进行了初步测试,用于合成获得低对映选择性的手性黄烷酮。