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N-Heterocyclic Carbene-Catalyzed Formal [3+2] Annulation of Alkynyl Aldehydes with Nitrosobenzenes: A Highly Regioselective Umpolung Strategy

✍ Scribed by Han, Runfeng; Qi, Jing; Gu, Jixiang; Ma, Donghui; Xie, Xingang; She, Xuegong

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