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@ARTICLE{Weber:885456,
      author       = {Weber, Anja and Breugst, Martin and Pietruszka, Jörg},
      title        = {{E}xperimental and {C}omputational {I}nvestigations of the
                      {R}eactions between α,β‐{U}nsaturated {L}actones and
                      1,3‐{D}ienes by {C}ooperative {L}ewis {A}cid/{B}rønsted
                      {A}cid {C}atalysis},
      journal      = {Angewandte Chemie / International edition},
      volume       = {59},
      number       = {42},
      issn         = {1521-3773},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2020-03839},
      pages        = {18709 - 18716},
      year         = {2020},
      abstract     = {The reactions of α,β‐unsaturated δ‐lactones with
                      activated dienes such as
                      1,3‐dimethoxy‐1‐[(trimethylsilyl)oxy]‐1,3‐butadiene
                      (Brassard's diene) are barely known in literature and show
                      high potential for the synthesis of isocoumarin moieties. An
                      in‐depth investigation of this reaction proved a stepwise
                      mechanism via the vinylogous Michael‐products. Subsequent
                      cyclisation and oxidation by LHMDS and DDQ, respectively,
                      provided six mellein derivatives $(30–84 \%)$ and four
                      angelicoin derivatives $(40–78 \%)$ over three steps.
                      DFT‐calculations provide insights into the reaction
                      mechanism and support the theory of a stepwise reaction.},
      cin          = {IBOC / IBG-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBOC-20090406 / I:(DE-Juel1)IBG-1-20101118},
      pnm          = {581 - Biotechnology (POF3-581)},
      pid          = {G:(DE-HGF)POF3-581},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32567075},
      UT           = {WOS:000559994400001},
      doi          = {10.1002/anie.202008365},
      url          = {https://juser.fz-juelich.de/record/885456},
}