Ponomarev SA, Larkovich RV, Aldoshin AS, Tabolin AA, Ioffe SL, Groß J, Opatz T, Nenajdenko VG. Diels-Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes.
Beilstein J Org Chem 2021;
17:283-292. [PMID:
33564337 PMCID:
PMC7849230 DOI:
10.3762/bjoc.17.27]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/13/2021] [Indexed: 01/31/2023] Open
Abstract
The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield. The reaction with 1,3-cyclohexadiene permits the preparation of monofluorinated bicyclo[2.2.2]oct-2-enes. The kinetic data of the reactions with 1,3-cyclopentadiene and 1,3-cyclohexadiene were used to calculate activation parameters. Furthermore, the synthetic utility of the cycloadducts obtained was demonstrated.
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