Kumar R, Chandra S, Nayak MK, Singha Hazari A, Elvers BJ, Schulzke C, Sarkar B, Jana A. An Air-Stable Alkene-Derived Organic Radical Cation.
ACS OMEGA 2022;
7:837-843. [PMID:
35036750 PMCID:
PMC8757455 DOI:
10.1021/acsomega.1c05479]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 10/27/2021] [Indexed: 06/14/2023]
Abstract
Alkenes are known to undergo oxidation to radical cations and dications. The radical cations are often highly reactive and not stable under air. Herein, we report the synthesis, isolation, characterization, and molecular structure of an alkene-derived radical cation A, which is stable in air both in the solid state and in solution. The access to this compound was facilitated from E-diamino tri-substituted alkene B as a synthon for the synthesis of A through one-electron oxidation. The E-diamino tri-substituted alkene B was synthesized by the two-electron reduction of N,N'-1,2-propylene-bridged bis-2-phenyl-pyrrolinium cation C. Under two-electron oxidation, alkene B transforms back to cation C involving a double carbocation rearrangement.
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