2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Mediated C(<i>sp</i>
<sup>2</sup>
)-C(<i>sp</i>
<sup>3</sup>
) Cross-Dehydrogenative Coupling Reaction: α-Alkylation of Push-Pull Enamines and α-Oxo Ketene Dithioacetals
作者:Dongping Cheng、Lijun Wu、Zhiteng Deng、Xiaoliang Xu、Jizhong Yan
DOI:10.1002/adsc.201700853
日期:2017.12.19
A novel, metal‐free cross‐dehydrogenative coupling (CDC) reaction of C(sp2)–H bonds of enamines and α‐oxo ketene dithioacetals with C(sp3)–H bonds of 1,3‐diarylpropenes mediated by 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) is reported. The α‐alkylation products are obtained with moderate to good yields. The method provides an efficient and alternative strategy for the synthesis of the corresponding
一种新型的,无金属的交叉脱氢偶联(CDC)C的反应(SP 2)烯胺与α氧代烯酮二硫的-H键与C(SP 3)1,3- diarylpropenes -H键由2介导的,报告了3-二氯-5,6-二氰基-1,4-苯醌(DDQ)。获得的α-烷基化产物的产率中等至良好。该方法提供了用于合成相应产物的有效且可替代的策略。