Catalytic asymmetric formal [3+2] cycloaddition of isatogens with azlactones to construct indolin-3-one derivatives
作者:Lihua Xie、Yi Li、Shunxi Dong、Xiaoming Feng、Xiaohua Liu
DOI:10.1039/d0cc06418a
日期:——
A number of enantioenriched indolin-3-one derivatives were readily obtained by chiral guanidine-catalyzed [3+2] cycloaddition of isatogens with azlactones.
Synthesis of
<scp>
<i>N</i>
</scp>
‐Hydroxyindole Derivatives via Pd‐Catalyzed Electrophilic Cyclization
作者:Soo Min Oh、Seunghoon Shin
DOI:10.1002/bkcs.12285
日期:2021.6
A synthetic protocol for the synthesis of C2-substituted N-hydroxyindoles has been developed which consists of Sonogashira coupling, partial reduction of the nitro group, and Larock cyclization. This protocol features superior generality and efficiency over conventional alternatives.
Efficient Nucleophilic Aromatic Substitution between Aryl Nitrofluorides and Alkynes
作者:Patrick L. DeRoy、Simon Surprenant、Megan Bertrand-Laperle、Christiane Yoakim
DOI:10.1021/ol0710818
日期:2007.7.1
The nucleophilic aromatic substitution reaction between electron-deficient aryl fluorides and terminal alkynes is shown to be efficiently promoted by sodium bis(trimethylsilyl)amide as a base. Moderate to excellent yields of 2-ethynylnitrobenzene products can be obtained under mild conditions.