Oxidative Alkynylation of Imines with Alkynylcopper Reagents: A Straightforward and Practical Entry to Ynimines

[摘要]：We have developed an efficient and general synthesis of ynimines based on an oxidative cross-coupling between imines and alkynylcopper reagents. Upon simple addition of 1,2-dimethylimidazole in the presence of oxygen, these bench-stable, crystalline, and readily available polymeric compounds were found to be especially suitable reagents for the introduction of an alkynyl group into a wide range of ketimines at room temperature and under especially mild conditions.

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