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Synthesis of Benzoindolines via a Copper‐Catalyzed Reaction of 1‐Bromoethynyl‐2‐(cyclopropylidenemethyl)arenes with N‐Allylsulfonamide |
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| Authors: | Shaoyu Li Zhiming Li Jie Wu |
| Abstract: | 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. |
| Keywords: | N‐allylsulfonamide benzoindolines 1‐bromoethynyl‐2‐(cyclopropylidenemethyl)arenes copper(II) acetate tandem reaction |