@article{SchmidtBergerKellingetal.2011,
  author    = {Schmidt, Bernd and Berger, Ren{\´e} and Kelling, Alexandra and Schilde, Uwe},
  title     = {Pd-Catalyzed [2+2+1] coupling of alkynes and arenes phenol diazonium salts as mechanistic trapdoors},
  series = {Chemistry - a European journal},
  volume    = {17},
  journal   = {Chemistry - a European journal},
  number    = {25},
  publisher = {Wiley-Blackwell},
  address   = {Malden},
  issn      = {0947-6539},
  doi       = {10.1002/chem.201100609},
  pages     = {7032 -- 7040},
  year      = {2011},
  abstract  = {Alkynes and phenol diazonium salts undergo a Pd-catalyzed [2+2+1] cyclization reaction to spiro[4,5]decatetraene-7-ones. This structure was confirmed for one example by X-ray single-crystal structure analysis. The reaction is believed to proceed through oxidative addition of the phenol diazonium cation to Pd(0), subsequent insertion of two alkynes, followed by irreversible spirocyclization.},
  language  = {en}
}