@article{Gessner2012,
  author    = {Gessner, Viktoria H.},
  title     = {Diphenyl[2-(phenyl-sulfon-yl)propan-2-yl]-\(\lambda^5\)-phosphanethione},
  series = {Acta crystallographica. Section E, Structure reports online},
  volume    = {E68},
  journal   = {Acta crystallographica. Section E, Structure reports online},
  number    = {o1045},
  doi       = {10.1107/S1600536812010082},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-123635},
  year      = {2012},
  abstract  = {The title compound, \(C_{21}H_{21}O_2PS_2\), was obtained from the corresponding dilithio methandiide by treatment with iodo-methane. The bond lengths and angles deviate considerably from those in the dimetallated compound. These differences are most pronounced in the PCS backbone. While the title compound features C-P and C-S distances of 1.9082(17) and 1.8348(17){\AA}, respectively, the dianion showed \(C-P_{av}\) distances shortened by 11\% [1.710(4){\AA}] and C-S distances shortened by 12\% [1.614(3){\AA}]. Additionally, the P-C-S angle experiences a contraction by methyl-ation of the dianion from 121.4(2) to 111.96(9)° in the title compound.},
  language  = {en}
}
@article{HartungSeufertBergesetal.2012,
  author    = {Hartung, Andreas and Seufert, Florian and Berges, Carsten and Gessner, Viktoria H. and Holzgrabe, Ulrike},
  title     = {One-Pot Ugi/Aza-Michael Synthesis of Highly Substituted 2,5-Diketopiperazines with Anti-Proliferative Properties},
  series = {Molecules},
  volume    = {17},
  journal   = {Molecules},
  number    = {12},
  doi       = {10.3390/molecules171214685},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-130423},
  pages     = {14685-14699},
  year      = {2012},
  abstract  = {The well-known Ugi reaction of aldehydes with amines, carboxylic acids and isocyanides leads to the formation of acyclic alpha-acylaminocarboxamides. Replacement of the carboxylic acid derivatives with beta-acyl substituted acrylic acids gives access to highly substituted 2,5-diketopiperazines in one single reaction-step without additives or complex reaction procedures. The obtained diketopiperazines show anti-proliferative effects on activated T cells and represent therefore potential candidates for targeting unwanted T cell-mediated immune responses.},
  language  = {en}
}
@article{Gessner2014,
  author    = {Gessner, Viktoria H.},
  title     = {Diphenyl[(phenylsulfanyl)methyl]-\(λ^5\)-phosphanethione},
  series = {Acta Crystallographica, Section E: Structure Reports},
  volume    = {70},
  journal   = {Acta Crystallographica, Section E: Structure Reports},
  number    = {3},
  doi       = {10.1107/S1600536814004292},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-120174},
  pages     = {o374},
  year      = {2014},
  abstract  = {The title compound, \(C_{19}H_{17}PS_2\), results from the direct deprotonation of di­phenyl­methyl­phosphine sulfide and subsequent reaction with diphenyl di­sulfide. The C-P and C-S bond lengths of 1.8242 (18) and 1.8009 (18) {\AA}, respectively, of the central P-C-S linkage are comparable to those found in the sulfonyl analogue, but are considerably longer than those reported for the dimetallated sulfonyl compound. The dihedral angle between the benzene rings of the di­phenyl­methyl moiety is 69.46 (7)°. No distinct inter­molecular inter­actions are present in the crystal structure.},
  language  = {en}
}
@article{ScherpfSchwarzScharfetal.2018,
  author    = {Scherpf, Thorsten and Schwarz, Christopher and Scharf, Lennart T. and Zur, Jana-Alina and Helbig, Andeas and Gessner, Viktoria H.},
  title     = {Ylide-Functionalized Phosphines: Strong Donor Ligands for Homogeneous Catalysis},
  series = {Angewandte Chemie - International Edition},
  volume    = {57},
  journal   = {Angewandte Chemie - International Edition},
  number    = {39},
  doi       = {10.1002/anie.201805372},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-228551},
  pages     = {12859-12864},
  year      = {2018},
  abstract  = {Phosphines are important ligands in homogenous catalysis and have been crucial for many advances, such as in cross-coupling, hydrofunctionalization, or hydrogenation reactions. Herein we report the synthesis and application of a novel class of phosphines bearing ylide substituents. These phosphines are easily accessible via different synthetic routes from commercially available starting materials. Owing to the extra donation from the ylide group to the phosphorus center the ligands are unusually electron-rich and can thus function as strong electron donors. The donor capacity surpasses that of commonly used phosphines and carbenes and can easily be tuned by changing the substitution pattern at the ylidic carbon atom. The huge potential of ylide-functionalized phosphines in catalysis is demonstrated by their use in gold catalysis. Excellent performance at low catalyst loadings under mild reaction conditions is thus seen in different types of transformations.},
  language  = {en}
}