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@ARTICLE{Drennhaus:885453,
      author       = {Drennhaus, Till and Öhler, Laura and Djalali, Saveh and
                      Höfmann, Svenja and Müller, Clemens and Pietruszka, Jörg
                      and Worgull, Dennis},
      title        = {{E}nantioselective {A}mmonium {Y}lide {M}ediated
                      {O}ne‐{P}ot {S}ynthesis of {H}ighly {S}ubstituted γ
                      ‐{B}utyrolactones},
      journal      = {Advanced synthesis $\&$ catalysis},
      volume       = {362},
      number       = {12},
      issn         = {1615-4169},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2020-03836},
      pages        = {2385 - 2396},
      year         = {2020},
      abstract     = {An ammonium ylide mediated access towards
                      trans‐β,γ‐disubstituted,
                      all‐trans‐α,β,γ‐trisubstituted, and
                      α,α,β,γ‐tetrasubstituted γ‐butyrolactones bearing a
                      broad variety of functionalities was developed. Starting
                      from widely accessible benzylidene Meldrum's acid
                      derivatives and α‐bromo carbonyl compounds,
                      γ‐butyrolactones were obtained in yields between
                      $32–99\%$ with up to excellent diastereoselectivities
                      (>95:5) via a DABCO‐mediated [2+1] annulation. Utilization
                      of enantiomerically pure cinchona alkaloid derivatives
                      enables the first asymmetric ammonium ylide mediated method
                      to provide (3R, 4R)‐β,γ‐disubstituted and (2R, 3R,
                      4R)‐α,β,γ‐trisubstituted γ‐butyrolactones in
                      moderate to good yields with up to very good enantiomeric
                      ratios (97:3). The scalability of the transformation was
                      proven while determining the absolute configuration.},
      cin          = {IBOC / IBG-1},
      ddc          = {660},
      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},
      UT           = {WOS:000540092500012},
      doi          = {10.1002/adsc.202000039},
      url          = {https://juser.fz-juelich.de/record/885453},
}