Tröster A, Bach T. Triplet-sensitised di-π-methane rearrangement of N-substituted 2-azabarrelenones.
Chem Commun (Camb) 2019;
55:302-305. [PMID:
30516181 DOI:
10.1039/c8cc08704k]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When irradiated at λ = 366 nm or at λ = 420 nm in the presence of an appropriate sensitiser the title compounds underwent a di-π-methane rearrangement which led to the formation of tricyclic azasemibullvalenones (2a,2a1,2b,4a-tetrahydroazacyclopropa[cd]pentalenones) in yields of 63-87%.
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