Kadikova G, D’yakonov VA, Dzhemilev UM. Cobalt(I)-Catalyzed [6π + 2π] Cycloaddition of 1,2-Dienes and 1,3-Diynes to
N-Carbocholesteroxyazepine in the Synthesis of Previously Undescribed Heterofunctional 9-Azabicyclo[4.2.1]nonadi(tri)enes.
ACS OMEGA 2021;
6:21755-21763. [PMID:
34471777 PMCID:
PMC8388074 DOI:
10.1021/acsomega.1c03321]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Promising heterofunctional (E)-9-azabicyclo[4.2.1]nona-2,4-dienes (79-92%) and 9-azabicyclo[4.2.1]nona-2,4,7-trienes (77-90%) containing a cholesterol fragment in the structure have been synthesized for the first time through the [6π + 2π] cycloaddition reaction of terminal 1,2-dienes and symmetric 1,3-diynes with N-carbocholesteroxyazepine under the action of the Co(acac)2(dppe)/Zn/ZnI2 three-component catalytic system.
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