Zinc-Catalyzed Enantioselective Dearomative [3+2] Cycloaddition Reaction of 3-Nitrobenzothiophenes and 3-Nitrothieno[2,3-<i>b</i>]yridine with 3-Isothiocyanato Oxindoles
作者:Deng-Feng Yue、Jian-Qiang Zhao、Yong-Zheng Chen、Xiao-Mei Zhang、Xiao-Ying Xu、Wei-Cheng Yuan
DOI:10.1002/adsc.201701557
日期:2018.4.3
enantioselective dearomative [3+2] cycloaddition reaction of 3‐nitrobenzothiophenes and 3‐nitrothieno[2,3‐b]with 3‐isothiocyanato oxindoles is developed. The reaction is catalyzed by the chiral Zn(OTf)2/bis(oxazoline, and is the second example of a catalytic asymmetric dearomative cycloaddition reaction of 3‐nitrobenzothiophene derivatives. A range of complex heterocyclic compounds containing three contiguous
开发了3-硝基苯并噻吩和3-硝基噻吩并[2,3- b ]与3-异硫氰酸根合吲哚的非对映选择性和对映选择性的[3 + 2]环加成反应。该反应由手性Zn(OTf)2 /双(恶唑啉)催化,是3-硝基苯并噻吩衍生物催化不对称脱芳香环加成反应的第二个例子,一系列复杂的杂环化合物包含三个连续的立体中心,其中一个是螺环中心可以定量获得,且具有优异的立体选择性。