Selective C-N σ Bond Cleavage in Azetidinyl Amides under Transition Metal-Free Conditions
oleh: Hengzhao Li, Zemin Lai, Adila Adijiang, Hongye Zhao, Jie An
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2019-01-01 |
Deskripsi
Functionalization of amide bond via the cleavage of a non-carbonyl, C-N σ bond remains under-investigated. In this work, a transition-metal-free single-electron transfer reaction has been developed for the C-N σ bond cleavage of <i>N</i>-acylazetidines using the electride derived from sodium dispersions and 15-crown-5. Of note, less strained cyclic amides and acyclic amides are stable under the reaction conditions, which features the excellent chemoselectivity of the reaction. This method is amenable to a range of unhindered and sterically encumbered azetidinyl amides.