An Efficient Approach to Fused Indolines via a Copper(I)-Catalyzed Reaction of Sulfonyl Azide with 2-Ethynylaryl Methylenecyclopropane
作者:Shaoyu Li、Yong Luo、Jie Wu
DOI:10.1021/ol2011067
日期:2011.6.17
A cascade reaction of 2-ethynylaryl methylenecyclopropane with sulfonylazide catalyzed by copper(I) iodide under mild conditions is described, which provides a novel and efficient route for the generation of fused indolines.
A gold(<scp>i</scp>)-catalyzed intramolecular tandem cyclization reaction of alkylidenecyclopropane-containing alkynes
作者:Wei Fang、Yin Wei、Min Shi
DOI:10.1039/c7cc07042j
日期:——
moderate to good yields. The further transformations as well as application of the product have been presented and a plausible reaction mechanism has been also proposed on the basis of deuteriumlabeling and control experiments.
Synthesis of Benzoindolines<i>via</i>a Copper-Catalyzed Reaction of 1-Bromoethynyl-2-(cyclopropylidenemethyl)arenes with<i>N</i>-Allylsulfonamide
作者:Shaoyu Li、Zhiming Li、Jie Wu
DOI:10.1002/adsc.201200374
日期:2012.11.12
A copper-catalyzed tandem reaction of 1-bromoethynyl-2-(cyclopropylidenemethyl)arenes with N-allylsulfonamide proceeds smoothly, affording functionalized benzoindolines in moderate to good yields. The transformation is a four-step cascade involving Ullmann coupling, aza-Claisen rearrangement, 6π-electrocyclization, and intramolecular rearrangement.