Iodobenzene Dichloride/Zinc Chloride-Mediated Synthesis of <i>N</i>
-Alkoxyindole-3-carbonitriles from 3-Alkoxyimino-2-arylalkylnitriles via Intramolecular Heterocyclization
作者:Zhongxiang Yun、Ran Cheng、Jiyun Sun、Daisy Zhang-Negrerie、Yunfei Du
DOI:10.1002/adsc.201701111
日期:2018.1.17
heterocyclization of the readily available 3‐alkoxyimino‐2‐arylalkylnitriles mediated by iodobenzene dichloride/zinc chloride. The mechanism of the reaction proposes the formation of a key intermediate of nitrenium cation from a chlorination and dechlorination process facilitated by the hypervalent iodine reagent and Lewis acid respectively.
Highly Stereoselective Dimerization of 3-Alkoxyimino-2-aryl-alkylnitriles via Oxidative Carbon-Carbon Bond Formation
作者:Yunfei Du、Kang Zhao、Yongliang Zhang、Songqing Wang
DOI:10.1055/s-0029-1217369
日期:2009.7
The MnO 2 -mediated oxidativedimerization of a series of 3-alkoxyimino-2-aryl-alkylnitriles was investigated. The developed method stereospecifically afforded solely the corresponding C 2 -symmetric dl-dimers, with the trans-configuration of the C=N double bonds, in good to excellent yields under mild conditions. The alkoxyimino substituents in the substrates and a thermodynamically controlled mechanism