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Horst Prinzbach (20 July 1931 inHaslach im Kinzigtal – 18 September 2012 inFreiburg im Breisgau) was a German chemist and professor emeritus.
Prinzbach studied chemistry at theUniversity of Freiburg and received his PhD under Arthur Lüttringhaus. He joinedWilliam von Eggers Doering atYale University for postdoctoral work. In 1962 he completed hishabilitation at Freiburg with a dissertation on sesquifulvalenes. In 1965 he became a professor oforganic chemistry at theUniversity of Lausanne, Switzerland, and in 1969 he became a full professor in organic chemistry at Freiburg.
Of his many research interests in organic chemistry, includingphotochemistry with unusual chromophores, synthesis of new carba-/hetera cages, radical cations, dications, total synthesis of aminoglycoside antibiotics, and enzymes, Prinzbach was probably best known for thepagodane route towardsdodecahedrane.[citation needed] In the course of his research, the phenomenon of σ-bishomoaromaticity was discovered as an extreme case of chemical bonding. The final landmark the development of dodecahedrane chemistry over many years was the preparation and characterisation ofC20 fullerene in the gas phase based on bromination-elimination reactions of dodecahedrane.[1][2]
σ-Bishomoaromaticity is an extreme case of chemical bonding andaromaticity.[clarification needed] It was found by the Prinzbach when they synthesized dodecahedrane via thePagodane route.[3][4][5]
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