Sequential Copper(I)-Catalyzed Reaction of Amines with<i>o</i>-Acetylenyl-Substituted Phenyldiazoacetates
作者:Cheng Peng、Jiajia Cheng、Jianbo Wang
DOI:10.1002/adsc.200800249
日期:2008.10.6
A highly efficient, tetrakis(acetonitrile)copper(I) hexafluorophosphate [Cu(MeCN)4PF6]-catalyzed tandem Cu(I)-carbene NH insertion/Cu(I)-catalyzed hydroamination of alkynes, which leads to sequential formation of two CN bonds to yield isoindole derivatives, has been developed.
Dearomative Iodocyclization of <i>N</i>-(<i>o</i>-Alkynyl)aryl Isoindole
作者:Zhiqiong Tang、Fang Zhang、Tengfei Yao、Xun-Shen Liu、Yuanyuan Liu、Lu Liu
DOI:10.1021/acs.joc.2c00424
日期:2022.6.3
We present a dearomative iodocyclization of N-(o-alkynyl)aryl isoindole here, which affords various biologically active benzoindoleazine skeletons containing alkenyl iodine. The products can further undergo cycloaddition or coupling reactions to afford a series of highly functionalized N-fused polycyclic scaffolds.
我们在这里提出了N- ( o -alkynyl )aryl isoindole 的脱芳香碘环化反应,它提供了各种含有烯基碘的生物活性苯并吲哚嗪骨架。产物可以进一步进行环加成或偶联反应,得到一系列高度功能化的N-稠合多环支架。
Sequential Au(I)-catalyzed reaction of water with <i>o</i>-acetylenyl-substituted phenyldiazoacetates
作者:Lei Zhou、Yizhou Liu、Yan Zhang、Jianbo Wang
DOI:10.3762/bjoc.7.74
日期:——
The gold(I)-catalyzedreaction of water with o-acetylenyl-substituted phenyldiazoacetates provides 1H-isochromene derivatives in good yields. The reaction follows a catalytic sequence of gold carbene formation/water O-H insertion/alcohol-alkyne cyclization. The gold(I) complex is the only catalyst in each of these steps.
Copper-Catalyzed Chemodivergent Cyclization of N-(<i>ortho</i>-alkynyl)aryl-Pyrrole and Indoles
作者:Tengfei Yao、Tong Xia、Wei Yan、Haofeng Xu、Fang Zhang、Yuanjing Xiao、Junliang Zhang、Lu Liu
DOI:10.1021/acs.orglett.0c01519
日期:2020.6.5
Herein, we described an efficient copper-catalyzed chemo-divergent tandem reaction of N-(ortho-alkynyl)aryl-pyrrole and (iso)indoles, delivering ring-fused N-heterocycles in good yields in an atom-economical manner. N-(ortho-alkynyl)aryl-pyrrole and indoles undergo the tandem cyclization/migration reaction, in which the group at 2-position was migrated to 3-position. In contrast, the dearomative cyclization of N-(ortho-alkynyl)aryl-isoindoles would occur to deliver the N-fused tetracyclic products efficiently.