Journal
CHEM
Volume 7, Issue 1, Pages 255-266Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2020.12.002
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Funding
- Dutch Science Foundation (NWO) [14150]
- Estonian Research Council (ETAG) [PUTJD821]
- Sao Paulo Research Foundation [2018/08772-6]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germanys Excellence Strategy [EXC 2033-390677874 - RESOLV]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [18/08772-6] Funding Source: FAPESP
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Aziridines are important synthetic building blocks in organic synthesis and the effective coupling of alkenes and amines has been achieved using an electrochemical approach. This study presents a new strategy for the efficient synthesis of aziridines, with short reaction times, high yields, and broad substrate scope. The mechanistic investigations and DFT calculations provide insight into the reaction mechanism involving oxidative coupling of alkenes and primary alkylamines.
Aziridines are useful synthetic building blocks, widely employed for the preparation of various nitrogen-containing derivatives. As the current methods require the use of prefunctionalized amines, the development of a synthetic strategy toward aziridines that can establish the union of alkenes and amines would be of great synthetic value. Herein, we report an electrochemical approach, which realizes this concept via an oxidative coupling between alkenes and primary alkylamines. The reaction is carried out in an electrochemical flow reactor leading to short reaction/residence times (5 min), high yields, and broad scope. At the cathode, hydrogen is generated, which can be used in a second reactor to reduce the aziridine, yielding the corresponding hydroaminated product. Mechanistic investigations and DFT calculations revealed that the alkene is first anodically oxidized and subsequently reacted with the amine coupling partner.
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